Using git 2.24.0 from Debian testing.
It seems that git-am will strip CRLF endings from mails before applying
patches when the mail isn't encoded in any way. It will also decode
base64-encoded mails. But it won't strip CRLF endings from
base64-encoded mails.
Attached are two mbox files for two different recent series.
plainenc.am applies cleanly with `git am`, while base64enc.am doesn't.
Poking around the man pages, it looks like part of the issue might be
that the CRLF stripping is done in `git mailsplit`, before the base64
encoding, rather than after.
-George
From - Wed Dec 18 10:46:18 2019
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From: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>
To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>, Razvan COJOCARU
<rcojocaru@xxxxxxxxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, "Petre
Ovidiu PIRCALABU" <ppircalabu@xxxxxxxxxxxxxxx>, George Dunlap
<george.dunlap@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>,
=?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@xxxxxxxxxx>, Jun Nakajima
<jun.nakajima@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>
Subject: [PATCH V4 1/4] x86/mm: Add array_index_nospec to guest provided index
values
Thread-Topic: [PATCH V4 1/4] x86/mm: Add array_index_nospec to guest provided
index values
Thread-Index: AQHVtOxhsG39wuvEP0STO9uvU+j0gQ==
Date: Tue, 17 Dec 2019 15:12:21 +0000
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KyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
ICAgTUFYX0FMVFAyTSldOw0KICAgICB9DQogICAgIGVsc2UNCiAgICAgICAgIHAybSA9IGhvc3Rf
cDJtOw0KLS0gDQoyLjE3LjENCg0K
From - Wed Dec 18 10:46:18 2019
Received: from FTLPEX02AMS01.citrite.net (10.13.108.166) by
AMSPEX02CL01.citrite.net (10.69.22.125) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Mailbox Transport; Tue, 17 Dec 2019 16:12:39 +0100
Received: from LASPEX02MSOL01.citrite.net (10.160.21.45) by
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Received: from esa2.hc3370-68.iphmx.com (10.160.38.12) by
LASPEX02MSOL01.citrite.net (10.160.21.45) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Frontend Transport; Tue, 17 Dec 2019 07:12:35 -0800
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
authenticity information available from domain of
aisaila@xxxxxxxxxxxxxxx) identity=pra;
client-ip=40.107.5.101; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="aisaila@xxxxxxxxxxxxxxx";
x-conformance=sidf_compatible
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
aisaila@xxxxxxxxxxxxxxx designates 40.107.5.101 as permitted
sender) identity=mailfrom; client-ip=40.107.5.101;
receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="aisaila@xxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
designates 40.107.5.101 as permitted sender) identity=helo;
client-ip=40.107.5.101; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa2.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.mailfrom=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.helo=postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: GSSRfHFuftbjDZqjEGNGdGVpHvQ1LO0oONGULXCbprWGSf5zqtGpfGNh7gZy7I/ocm7KQtu568
GktZuqO0lYsp0dsGfbNf684WENRVd0wAYKqN/YMYYP/uNRR1WZbugM7NcZnpedTqjYuegyOVim
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CyhRSiM0IiDhIWJt5ImuVUdq
X-IronPort-RemoteIP: 40.107.5.101
X-IronPort-MID: 9822597
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 9822597
X-Ironport-Server: esa2.hc3370-68.iphmx.com
X-Remote-IP: 40.107.5.101
X-Policy: $ACCEPTED
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X-IronPort-AV: E=Sophos;i="5.69,325,1571716800";
d="scan'208";a="9822597"
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
X-IronPort-Outbreak-Status: No, level 0, Unknown - Unknown
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From: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>
To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>, Ian Jackson
<ian.jackson@xxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>,
"Jan Beulich" <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Konrad
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COJOCARU <rcojocaru@xxxxxxxxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>,
Petre Ovidiu PIRCALABU <ppircalabu@xxxxxxxxxxxxxxx>
Subject: [PATCH V4 2/4] x86/altp2m: Add hypercall to set a range of sve bits
Thread-Topic: [PATCH V4 2/4] x86/altp2m: Add hypercall to set a range of sve
bits
Thread-Index: AQHVtOxnMZNvtoiQIE62yqEH5VgLvA==
Date: Tue, 17 Dec 2019 15:12:31 +0000
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From - Wed Dec 18 10:46:18 2019
Received: from FTLPEX02AMS01.citrite.net (10.13.108.166) by
AMSPEX02CL01.citrite.net (10.69.22.125) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Mailbox Transport; Tue, 17 Dec 2019 16:12:41 +0100
Received: from LASPEX02MSOL01.citrite.net (10.160.21.45) by
FTLPEX02AMS01.citrite.net (10.13.108.166) with Microsoft SMTP Server (TLS) id
15.0.1473.3; Tue, 17 Dec 2019 10:12:38 -0500
Received: from esa2.hc3370-68.iphmx.com (10.160.38.12) by
LASPEX02MSOL01.citrite.net (10.160.21.45) with Microsoft SMTP Server (TLS) id
15.0.1473.3 via Frontend Transport; Tue, 17 Dec 2019 07:12:38 -0800
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
authenticity information available from domain of
aisaila@xxxxxxxxxxxxxxx) identity=pra;
client-ip=40.107.2.105; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="aisaila@xxxxxxxxxxxxxxx";
x-conformance=sidf_compatible
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
aisaila@xxxxxxxxxxxxxxx designates 40.107.2.105 as permitted
sender) identity=mailfrom; client-ip=40.107.2.105;
receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="aisaila@xxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
designates 40.107.2.105 as permitted sender) identity=helo;
client-ip=40.107.2.105; receiver=esa2.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa2.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.mailfrom=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.helo=postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: PnqSc0B77LeANL3Hw+DGtt/O3/v0Y11DLjGxjQ++t1bxNGDqROWo17u2nW7CEhQ00f0s/7Ee84
fYkLxjf0zQffOURGGvHJledwhb3/WYADU2X19VB+kRFiyF3CufCwYYcAqx8WJY+Nl0Ovk0Zc37
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Ptq6cu2Q/LimYZeaXhKpoIuv/MIeIC8nbCVilGkzdRyx+w8ZXhimhOahsfeTXGDZTtZU6HLFmJ
vtTtF1H/jCRzDA79hWT0X6Jy
X-IronPort-RemoteIP: 40.107.2.105
X-IronPort-MID: 9822605
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 9822605
X-Ironport-Server: esa2.hc3370-68.iphmx.com
X-Remote-IP: 40.107.2.105
X-Policy: $ACCEPTED
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From: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>
To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>, Jun Nakajima
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=?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@xxxxxxxxxx>
Subject: [PATCH V4 3/4] x86/mm: Pull out the p2m specifics from
p2m_init_altp2m_ept
Thread-Topic: [PATCH V4 3/4] x86/mm: Pull out the p2m specifics from
p2m_init_altp2m_ept
Thread-Index: AQHVtOxpSoGNE4L+skG6HNN4NefFyg==
Date: Tue, 17 Dec 2019 15:12:34 +0000
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aisaila@xxxxxxxxxxxxxxx designates 40.107.2.123 as permitted
sender) identity=mailfrom; client-ip=40.107.2.123;
receiver=esa6.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="aisaila@xxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Received-SPF: Pass (esa6.hc3370-68.iphmx.com: domain of
postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
designates 40.107.2.123 as permitted sender) identity=helo;
client-ip=40.107.2.123; receiver=esa6.hc3370-68.iphmx.com;
envelope-from="aisaila@xxxxxxxxxxxxxxx";
x-sender="postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
x-conformance=sidf_compatible; x-record-type="v=spf1";
x-record-text="v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16
ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48
ip6:2a01:111:f403::/48 -all"
Authentication-Results: esa6.hc3370-68.iphmx.com; spf=None smtp.pra=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.mailfrom=aisaila@xxxxxxxxxxxxxxx; spf=Pass smtp.helo=postmaster@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx; dkim=pass (signature verified) header.i=@bitdefender.onmicrosoft.com
IronPort-SDR: nGAb3eA9Sbc9iZuJr4Fergwi3EVWhqvxtnt563Axx6RJ2qnf8udqFPUPtyGwDiyoEg9ykwyv8A
hXYlT4o/ydC7i4iJCUJ0gOXlsfCjrST7G8D1N2/Qx3gsHKPyE4EsXkQK6Hgx2XE63w9LOiKoh6
BGPooJrXe0gsUwfr7H75bVFZ9bOvikJU10rEIfyl/7Q3rJeOUjbF7hA3XGOHn6i6NgYE/T41zC
uENkisdgTWHeujm0bP8mGeCRpwmVEDeufBoLtW8mD/JflFBF9ipZUdqHPFNFblpdwuDHQfzxd0
oTArjDzMZAJP1VMeceoDzG5l
X-IronPort-RemoteIP: 40.107.2.123
X-IronPort-MID: 10228222
X-IronPort-Reputation: 3.5
X-IronPort-Listener: InboundMail
X-IronPort-SenderGroup: SBRS_Whitelist
X-IronPort-MailFlowPolicy: $ACCEPTED
X-SBRS: 3.5
X-MesageID: 10228222
X-Ironport-Server: esa6.hc3370-68.iphmx.com
X-Remote-IP: 40.107.2.123
X-Policy: $ACCEPTED
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From: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>
To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Alexandru Stefan ISAILA <aisaila@xxxxxxxxxxxxxxx>, Jan Beulich
<jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu
<wl@xxxxxxx>, =?utf-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= <roger.pau@xxxxxxxxxx>,
George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Ian Jackson
<ian.jackson@xxxxxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Konrad Rzeszutek
Wilk" <konrad.wilk@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>,
Razvan COJOCARU <rcojocaru@xxxxxxxxxxxxxxx>, Tamas K Lengyel
<tamas@xxxxxxxxxxxxx>, Petre Ovidiu PIRCALABU <ppircalabu@xxxxxxxxxxxxxxx>,
George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Subject: [PATCH V4 4/4] x86/mm: Make use of the default access param from
xc_altp2m_create_view
Thread-Topic: [PATCH V4 4/4] x86/mm: Make use of the default access param from
xc_altp2m_create_view
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Date: Tue, 17 Dec 2019 15:12:41 +0000
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Ian
Jackson <ian.jackson@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien
Grall <julien@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>,
Stefano Stabellini <sstabellini@xxxxxxxxxx>, "Wei Liu" <wl@xxxxxxx>, Dario
Faggioli <dfaggioli@xxxxxxxx>, Josh Whitehead
<josh.whitehead@xxxxxxxxxxxxxxx>, Stewart Hildebrand
<stewart.hildebrand@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>
Subject: [PATCH 1/9] xen/sched: move schedulers and cpupool coding to dedicated directory
Date: Wed, 18 Dec 2019 08:48:51 +0100
Message-ID: <20191218074859.21665-2-jgross@xxxxxxxx>
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Move sched*c and cpupool.c to a new directory common/sched.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
MAINTAINERS | 8 +--
xen/common/Kconfig | 66 +---------------------
xen/common/Makefile | 8 +--
xen/common/sched/Kconfig | 65 +++++++++++++++++++++
xen/common/sched/Makefile | 7 +++
.../{compat/schedule.c => sched/compat_schedule.c} | 2 +-
xen/common/{ => sched}/cpupool.c | 0
xen/common/{ => sched}/sched_arinc653.c | 0
xen/common/{ => sched}/sched_credit.c | 0
xen/common/{ => sched}/sched_credit2.c | 0
xen/common/{ => sched}/sched_null.c | 0
xen/common/{ => sched}/sched_rt.c | 0
xen/common/{ => sched}/schedule.c | 2 +-
13 files changed, 80 insertions(+), 78 deletions(-)
create mode 100644 xen/common/sched/Kconfig
create mode 100644 xen/common/sched/Makefile
rename xen/common/{compat/schedule.c => sched/compat_schedule.c} (97%)
rename xen/common/{ => sched}/cpupool.c (100%)
rename xen/common/{ => sched}/sched_arinc653.c (100%)
rename xen/common/{ => sched}/sched_credit.c (100%)
rename xen/common/{ => sched}/sched_credit2.c (100%)
rename xen/common/{ => sched}/sched_null.c (100%)
rename xen/common/{ => sched}/sched_rt.c (100%)
rename xen/common/{ => sched}/schedule.c (99%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 012c847ebd..37d4da2bc2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -174,7 +174,7 @@ M: Josh Whitehead <josh.whitehead@xxxxxxxxxxxxxxx>
M: Stewart Hildebrand <stewart.hildebrand@xxxxxxxxxxxxxxx>
S: Supported
L: DornerWorks Xen-Devel <xen-devel@xxxxxxxxxxxxxxx>
-F: xen/common/sched_arinc653.c
+F: xen/common/sched/sched_arinc653.c
F: tools/libxc/xc_arinc653.c
ARM (W/ VIRTUALISATION EXTENSIONS) ARCHITECTURE
@@ -212,7 +212,7 @@ CPU POOLS
M: Juergen Gross <jgross@xxxxxxxx>
M: Dario Faggioli <dfaggioli@xxxxxxxx>
S: Supported
-F: xen/common/cpupool.c
+F: xen/common/sched/cpupool.c
DEVICE TREE
M: Stefano Stabellini <sstabellini@xxxxxxxxxx>
@@ -378,13 +378,13 @@ RTDS SCHEDULER
M: Dario Faggioli <dfaggioli@xxxxxxxx>
M: Meng Xu <mengxu@xxxxxxxxxxxxx>
S: Supported
-F: xen/common/sched_rt.c
+F: xen/common/sched/sched_rt.c
SCHEDULING
M: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
M: Dario Faggioli <dfaggioli@xxxxxxxx>
S: Supported
-F: xen/common/sched*
+F: xen/common/sched/
SEABIOS UPSTREAM
M: Wei Liu <wl@xxxxxxx>
diff --git a/xen/common/Kconfig b/xen/common/Kconfig
index 2f516da101..79465fc1f9 100644
--- a/xen/common/Kconfig
+++ b/xen/common/Kconfig
@@ -278,71 +278,7 @@ config ARGO
If unsure, say N.
-menu "Schedulers"
- visible if EXPERT = "y"
-
-config SCHED_CREDIT
- bool "Credit scheduler support"
- default y
- ---help---
- The traditional credit scheduler is a general purpose scheduler.
-
-config SCHED_CREDIT2
- bool "Credit2 scheduler support"
- default y
- ---help---
- The credit2 scheduler is a general purpose scheduler that is
- optimized for lower latency and higher VM density.
-
-config SCHED_RTDS
- bool "RTDS scheduler support (EXPERIMENTAL)"
- default y
- ---help---
- The RTDS scheduler is a soft and firm real-time scheduler for
- multicore, targeted for embedded, automotive, graphics and gaming
- in the cloud, and general low-latency workloads.
-
-config SCHED_ARINC653
- bool "ARINC653 scheduler support (EXPERIMENTAL)"
- default DEBUG
- ---help---
- The ARINC653 scheduler is a hard real-time scheduler for single
- cores, targeted for avionics, drones, and medical devices.
-
-config SCHED_NULL
- bool "Null scheduler support (EXPERIMENTAL)"
- default y
- ---help---
- The null scheduler is a static, zero overhead scheduler,
- for when there always are less vCPUs than pCPUs, typically
- in embedded or HPC scenarios.
-
-choice
- prompt "Default Scheduler?"
- default SCHED_CREDIT2_DEFAULT
-
- config SCHED_CREDIT_DEFAULT
- bool "Credit Scheduler" if SCHED_CREDIT
- config SCHED_CREDIT2_DEFAULT
- bool "Credit2 Scheduler" if SCHED_CREDIT2
- config SCHED_RTDS_DEFAULT
- bool "RT Scheduler" if SCHED_RTDS
- config SCHED_ARINC653_DEFAULT
- bool "ARINC653 Scheduler" if SCHED_ARINC653
- config SCHED_NULL_DEFAULT
- bool "Null Scheduler" if SCHED_NULL
-endchoice
-
-config SCHED_DEFAULT
- string
- default "credit" if SCHED_CREDIT_DEFAULT
- default "credit2" if SCHED_CREDIT2_DEFAULT
- default "rtds" if SCHED_RTDS_DEFAULT
- default "arinc653" if SCHED_ARINC653_DEFAULT
- default "null" if SCHED_NULL_DEFAULT
- default "credit2"
-
-endmenu
+source "common/sched/Kconfig"
config CRYPTO
bool
diff --git a/xen/common/Makefile b/xen/common/Makefile
index 62b34e69e9..2abb8250b0 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -3,7 +3,6 @@ obj-y += bitmap.o
obj-y += bsearch.o
obj-$(CONFIG_CORE_PARKING) += core_parking.o
obj-y += cpu.o
-obj-y += cpupool.o
obj-$(CONFIG_DEBUG_TRACE) += debugtrace.o
obj-$(CONFIG_HAS_DEVICE_TREE) += device_tree.o
obj-y += domctl.o
@@ -38,12 +37,6 @@ obj-y += radix-tree.o
obj-y += rbtree.o
obj-y += rcupdate.o
obj-y += rwlock.o
-obj-$(CONFIG_SCHED_ARINC653) += sched_arinc653.o
-obj-$(CONFIG_SCHED_CREDIT) += sched_credit.o
-obj-$(CONFIG_SCHED_CREDIT2) += sched_credit2.o
-obj-$(CONFIG_SCHED_RTDS) += sched_rt.o
-obj-$(CONFIG_SCHED_NULL) += sched_null.o
-obj-y += schedule.o
obj-y += shutdown.o
obj-y += softirq.o
obj-y += sort.o
@@ -74,6 +67,7 @@ obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o kernel.o memory.o multicall
extra-y := symbols-dummy.o
subdir-$(CONFIG_COVERAGE) += coverage
+subdir-y += sched
subdir-$(CONFIG_UBSAN) += ubsan
subdir-$(CONFIG_NEEDS_LIBELF) += libelf
diff --git a/xen/common/sched/Kconfig b/xen/common/sched/Kconfig
new file mode 100644
index 0000000000..883ac87cab
--- /dev/null
+++ b/xen/common/sched/Kconfig
@@ -0,0 +1,65 @@
+menu "Schedulers"
+ visible if EXPERT = "y"
+
+config SCHED_CREDIT
+ bool "Credit scheduler support"
+ default y
+ ---help---
+ The traditional credit scheduler is a general purpose scheduler.
+
+config SCHED_CREDIT2
+ bool "Credit2 scheduler support"
+ default y
+ ---help---
+ The credit2 scheduler is a general purpose scheduler that is
+ optimized for lower latency and higher VM density.
+
+config SCHED_RTDS
+ bool "RTDS scheduler support (EXPERIMENTAL)"
+ default y
+ ---help---
+ The RTDS scheduler is a soft and firm real-time scheduler for
+ multicore, targeted for embedded, automotive, graphics and gaming
+ in the cloud, and general low-latency workloads.
+
+config SCHED_ARINC653
+ bool "ARINC653 scheduler support (EXPERIMENTAL)"
+ default DEBUG
+ ---help---
+ The ARINC653 scheduler is a hard real-time scheduler for single
+ cores, targeted for avionics, drones, and medical devices.
+
+config SCHED_NULL
+ bool "Null scheduler support (EXPERIMENTAL)"
+ default y
+ ---help---
+ The null scheduler is a static, zero overhead scheduler,
+ for when there always are less vCPUs than pCPUs, typically
+ in embedded or HPC scenarios.
+
+choice
+ prompt "Default Scheduler?"
+ default SCHED_CREDIT2_DEFAULT
+
+ config SCHED_CREDIT_DEFAULT
+ bool "Credit Scheduler" if SCHED_CREDIT
+ config SCHED_CREDIT2_DEFAULT
+ bool "Credit2 Scheduler" if SCHED_CREDIT2
+ config SCHED_RTDS_DEFAULT
+ bool "RT Scheduler" if SCHED_RTDS
+ config SCHED_ARINC653_DEFAULT
+ bool "ARINC653 Scheduler" if SCHED_ARINC653
+ config SCHED_NULL_DEFAULT
+ bool "Null Scheduler" if SCHED_NULL
+endchoice
+
+config SCHED_DEFAULT
+ string
+ default "credit" if SCHED_CREDIT_DEFAULT
+ default "credit2" if SCHED_CREDIT2_DEFAULT
+ default "rtds" if SCHED_RTDS_DEFAULT
+ default "arinc653" if SCHED_ARINC653_DEFAULT
+ default "null" if SCHED_NULL_DEFAULT
+ default "credit2"
+
+endmenu
diff --git a/xen/common/sched/Makefile b/xen/common/sched/Makefile
new file mode 100644
index 0000000000..359af4f8bb
--- /dev/null
+++ b/xen/common/sched/Makefile
@@ -0,0 +1,7 @@
+obj-y += cpupool.o
+obj-$(CONFIG_SCHED_ARINC653) += sched_arinc653.o
+obj-$(CONFIG_SCHED_CREDIT) += sched_credit.o
+obj-$(CONFIG_SCHED_CREDIT2) += sched_credit2.o
+obj-$(CONFIG_SCHED_RTDS) += sched_rt.o
+obj-$(CONFIG_SCHED_NULL) += sched_null.o
+obj-y += schedule.o
diff --git a/xen/common/compat/schedule.c b/xen/common/sched/compat_schedule.c
similarity index 97%
rename from xen/common/compat/schedule.c
rename to xen/common/sched/compat_schedule.c
index 8b6e6f107d..2e450685d6 100644
--- a/xen/common/compat/schedule.c
+++ b/xen/common/sched/compat_schedule.c
@@ -37,7 +37,7 @@ static int compat_poll(struct compat_sched_poll *compat)
#define do_poll compat_poll
#define sched_poll compat_sched_poll
-#include "../schedule.c"
+#include "schedule.c"
int compat_set_timer_op(u32 lo, s32 hi)
{
diff --git a/xen/common/cpupool.c b/xen/common/sched/cpupool.c
similarity index 100%
rename from xen/common/cpupool.c
rename to xen/common/sched/cpupool.c
diff --git a/xen/common/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
similarity index 100%
rename from xen/common/sched_arinc653.c
rename to xen/common/sched/sched_arinc653.c
diff --git a/xen/common/sched_credit.c b/xen/common/sched/sched_credit.c
similarity index 100%
rename from xen/common/sched_credit.c
rename to xen/common/sched/sched_credit.c
diff --git a/xen/common/sched_credit2.c b/xen/common/sched/sched_credit2.c
similarity index 100%
rename from xen/common/sched_credit2.c
rename to xen/common/sched/sched_credit2.c
diff --git a/xen/common/sched_null.c b/xen/common/sched/sched_null.c
similarity index 100%
rename from xen/common/sched_null.c
rename to xen/common/sched/sched_null.c
diff --git a/xen/common/sched_rt.c b/xen/common/sched/sched_rt.c
similarity index 100%
rename from xen/common/sched_rt.c
rename to xen/common/sched/sched_rt.c
diff --git a/xen/common/schedule.c b/xen/common/sched/schedule.c
similarity index 99%
rename from xen/common/schedule.c
rename to xen/common/sched/schedule.c
index e70cc70a65..a550dd8f93 100644
--- a/xen/common/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -3125,7 +3125,7 @@ void __init sched_setup_dom0_vcpus(struct domain *d)
#endif
#ifdef CONFIG_COMPAT
-#include "compat/schedule.c"
+#include "compat_schedule.c"
#endif
#endif /* !COMPAT */
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Andrew
Cooper" <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>,
=?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@xxxxxxxxxx>, George Dunlap
<George.Dunlap@xxxxxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>,
Julien Grall <julien@xxxxxxx>, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "Dario
Faggioli" <dfaggioli@xxxxxxxx>, Josh Whitehead
<josh.whitehead@xxxxxxxxxxxxxxx>, Stewart Hildebrand
<stewart.hildebrand@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>
Subject: [PATCH 2/9] xen/sched: make sched-if.h really scheduler private
Date: Wed, 18 Dec 2019 08:48:52 +0100
Message-ID: <20191218074859.21665-3-jgross@xxxxxxxx>
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include/xen/sched-if.h should be private to scheduler code, so move it
to common/sched/sched-if.h and move the remaining use cases to
cpupool.c and schedule.c.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/arch/x86/dom0_build.c | 5 +-
xen/common/domain.c | 70 ----------
xen/common/domctl.c | 135 +------------------
xen/common/sched/cpupool.c | 13 +-
xen/{include/xen => common/sched}/sched-if.h | 3 -
xen/common/sched/sched_arinc653.c | 3 +-
xen/common/sched/sched_credit.c | 2 +-
xen/common/sched/sched_credit2.c | 3 +-
xen/common/sched/sched_null.c | 3 +-
xen/common/sched/sched_rt.c | 3 +-
xen/common/sched/schedule.c | 191 ++++++++++++++++++++++++++-
xen/include/xen/domain.h | 3 +
xen/include/xen/sched.h | 7 +
13 files changed, 228 insertions(+), 213 deletions(-)
rename xen/{include/xen => common/sched}/sched-if.h (99%)
diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c
index 28b964e018..56c2dee0fc 100644
--- a/xen/arch/x86/dom0_build.c
+++ b/xen/arch/x86/dom0_build.c
@@ -9,7 +9,6 @@
#include <xen/libelf.h>
#include <xen/pfn.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/amd.h>
@@ -227,9 +226,9 @@ unsigned int __init dom0_max_vcpus(void)
dom0_nodes = node_online_map;
for_each_node_mask ( node, dom0_nodes )
cpumask_or(&dom0_cpus, &dom0_cpus, &node_to_cpumask(node));
- cpumask_and(&dom0_cpus, &dom0_cpus, cpupool0->cpu_valid);
+ cpumask_and(&dom0_cpus, &dom0_cpus, cpupool_valid_cpus(cpupool0));
if ( cpumask_empty(&dom0_cpus) )
- cpumask_copy(&dom0_cpus, cpupool0->cpu_valid);
+ cpumask_copy(&dom0_cpus, cpupool_valid_cpus(cpupool0));
max_vcpus = cpumask_weight(&dom0_cpus);
if ( opt_dom0_max_vcpus_min > max_vcpus )
diff --git a/xen/common/domain.c b/xen/common/domain.c
index 611116c7fc..f4f0a66262 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -10,7 +10,6 @@
#include <xen/ctype.h>
#include <xen/err.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/domain.h>
#include <xen/mm.h>
#include <xen/event.h>
@@ -565,75 +564,6 @@ void __init setup_system_domains(void)
#endif
}
-void domain_update_node_affinity(struct domain *d)
-{
- cpumask_var_t dom_cpumask, dom_cpumask_soft;
- cpumask_t *dom_affinity;
- const cpumask_t *online;
- struct sched_unit *unit;
- unsigned int cpu;
-
- /* Do we have vcpus already? If not, no need to update node-affinity. */
- if ( !d->vcpu || !d->vcpu[0] )
- return;
-
- if ( !zalloc_cpumask_var(&dom_cpumask) )
- return;
- if ( !zalloc_cpumask_var(&dom_cpumask_soft) )
- {
- free_cpumask_var(dom_cpumask);
- return;
- }
-
- online = cpupool_domain_master_cpumask(d);
-
- spin_lock(&d->node_affinity_lock);
-
- /*
- * If d->auto_node_affinity is true, let's compute the domain's
- * node-affinity and update d->node_affinity accordingly. if false,
- * just leave d->auto_node_affinity alone.
- */
- if ( d->auto_node_affinity )
- {
- /*
- * We want the narrowest possible set of pcpus (to get the narowest
- * possible set of nodes). What we need is the cpumask of where the
- * domain can run (the union of the hard affinity of all its vcpus),
- * and the full mask of where it would prefer to run (the union of
- * the soft affinity of all its various vcpus). Let's build them.
- */
- for_each_sched_unit ( d, unit )
- {
- cpumask_or(dom_cpumask, dom_cpumask, unit->cpu_hard_affinity);
- cpumask_or(dom_cpumask_soft, dom_cpumask_soft,
- unit->cpu_soft_affinity);
- }
- /* Filter out non-online cpus */
- cpumask_and(dom_cpumask, dom_cpumask, online);
- ASSERT(!cpumask_empty(dom_cpumask));
- /* And compute the intersection between hard, online and soft */
- cpumask_and(dom_cpumask_soft, dom_cpumask_soft, dom_cpumask);
-
- /*
- * If not empty, the intersection of hard, soft and online is the
- * narrowest set we want. If empty, we fall back to hard&online.
- */
- dom_affinity = cpumask_empty(dom_cpumask_soft) ?
- dom_cpumask : dom_cpumask_soft;
-
- nodes_clear(d->node_affinity);
- for_each_cpu ( cpu, dom_affinity )
- node_set(cpu_to_node(cpu), d->node_affinity);
- }
-
- spin_unlock(&d->node_affinity_lock);
-
- free_cpumask_var(dom_cpumask_soft);
- free_cpumask_var(dom_cpumask);
-}
-
-
int domain_set_node_affinity(struct domain *d, const nodemask_t *affinity)
{
/* Being disjoint with the system is just wrong. */
diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index 03d0226039..3407db44fd 100644
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -11,7 +11,6 @@
#include <xen/err.h>
#include <xen/mm.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/domain.h>
#include <xen/event.h>
#include <xen/grant_table.h>
@@ -65,9 +64,9 @@ static int bitmap_to_xenctl_bitmap(struct xenctl_bitmap *xenctl_bitmap,
return err;
}
-static int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
- const struct xenctl_bitmap *xenctl_bitmap,
- unsigned int nbits)
+int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
+ const struct xenctl_bitmap *xenctl_bitmap,
+ unsigned int nbits)
{
unsigned int guest_bytes, copy_bytes;
int err = 0;
@@ -200,7 +199,7 @@ void getdomaininfo(struct domain *d, struct xen_domctl_getdomaininfo *info)
info->shared_info_frame = mfn_to_gmfn(d, virt_to_mfn(d->shared_info));
BUG_ON(SHARED_M2P(info->shared_info_frame));
- info->cpupool = d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
+ info->cpupool = cpupool_get_id(d);
memcpy(info->handle, d->handle, sizeof(xen_domain_handle_t));
@@ -234,16 +233,6 @@ void domctl_lock_release(void)
spin_unlock(¤t->domain->hypercall_deadlock_mutex);
}
-static inline
-int vcpuaffinity_params_invalid(const struct xen_domctl_vcpuaffinity *vcpuaff)
-{
- return vcpuaff->flags == 0 ||
- ((vcpuaff->flags & XEN_VCPUAFFINITY_HARD) &&
- guest_handle_is_null(vcpuaff->cpumap_hard.bitmap)) ||
- ((vcpuaff->flags & XEN_VCPUAFFINITY_SOFT) &&
- guest_handle_is_null(vcpuaff->cpumap_soft.bitmap));
-}
-
void vnuma_destroy(struct vnuma_info *vnuma)
{
if ( vnuma )
@@ -608,122 +597,8 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
case XEN_DOMCTL_setvcpuaffinity:
case XEN_DOMCTL_getvcpuaffinity:
- {
- struct vcpu *v;
- const struct sched_unit *unit;
- struct xen_domctl_vcpuaffinity *vcpuaff = &op->u.vcpuaffinity;
-
- ret = -EINVAL;
- if ( vcpuaff->vcpu >= d->max_vcpus )
- break;
-
- ret = -ESRCH;
- if ( (v = d->vcpu[vcpuaff->vcpu]) == NULL )
- break;
-
- unit = v->sched_unit;
- ret = -EINVAL;
- if ( vcpuaffinity_params_invalid(vcpuaff) )
- break;
-
- if ( op->cmd == XEN_DOMCTL_setvcpuaffinity )
- {
- cpumask_var_t new_affinity, old_affinity;
- cpumask_t *online = cpupool_domain_master_cpumask(v->domain);
-
- /*
- * We want to be able to restore hard affinity if we are trying
- * setting both and changing soft affinity (which happens later,
- * when hard affinity has been succesfully chaged already) fails.
- */
- if ( !alloc_cpumask_var(&old_affinity) )
- {
- ret = -ENOMEM;
- break;
- }
- cpumask_copy(old_affinity, unit->cpu_hard_affinity);
-
- if ( !alloc_cpumask_var(&new_affinity) )
- {
- free_cpumask_var(old_affinity);
- ret = -ENOMEM;
- break;
- }
-
- /* Undo a stuck SCHED_pin_override? */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_FORCE )
- vcpu_temporary_affinity(v, NR_CPUS, VCPU_AFFINITY_OVERRIDE);
-
- ret = 0;
-
- /*
- * We both set a new affinity and report back to the caller what
- * the scheduler will be effectively using.
- */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- {
- ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
- &vcpuaff->cpumap_hard,
- nr_cpu_ids);
- if ( !ret )
- ret = vcpu_set_hard_affinity(v, new_affinity);
- if ( ret )
- goto setvcpuaffinity_out;
-
- /*
- * For hard affinity, what we return is the intersection of
- * cpupool's online mask and the new hard affinity.
- */
- cpumask_and(new_affinity, online, unit->cpu_hard_affinity);
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
- new_affinity);
- }
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
- {
- ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
- &vcpuaff->cpumap_soft,
- nr_cpu_ids);
- if ( !ret)
- ret = vcpu_set_soft_affinity(v, new_affinity);
- if ( ret )
- {
- /*
- * Since we're returning error, the caller expects nothing
- * happened, so we rollback the changes to hard affinity
- * (if any).
- */
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- vcpu_set_hard_affinity(v, old_affinity);
- goto setvcpuaffinity_out;
- }
-
- /*
- * For soft affinity, we return the intersection between the
- * new soft affinity, the cpupool's online map and the (new)
- * hard affinity.
- */
- cpumask_and(new_affinity, new_affinity, online);
- cpumask_and(new_affinity, new_affinity,
- unit->cpu_hard_affinity);
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
- new_affinity);
- }
-
- setvcpuaffinity_out:
- free_cpumask_var(new_affinity);
- free_cpumask_var(old_affinity);
- }
- else
- {
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
- unit->cpu_hard_affinity);
- if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
- ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
- unit->cpu_soft_affinity);
- }
+ ret = vcpu_affinity_domctl(d, op->cmd, &op->u.vcpuaffinity);
break;
- }
case XEN_DOMCTL_scheduler_op:
ret = sched_adjust(d, &op->u.scheduler_op);
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index 4d3adbdd8d..d5b64d0a6a 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -16,11 +16,12 @@
#include <xen/cpumask.h>
#include <xen/percpu.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/warning.h>
#include <xen/keyhandler.h>
#include <xen/cpu.h>
+#include "sched-if.h"
+
#define for_each_cpupool(ptr) \
for ((ptr) = &cpupool_list; *(ptr) != NULL; (ptr) = &((*(ptr))->next))
@@ -876,6 +877,16 @@ int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op)
return ret;
}
+int cpupool_get_id(const struct domain *d)
+{
+ return d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
+}
+
+cpumask_t *cpupool_valid_cpus(struct cpupool *pool)
+{
+ return pool->cpu_valid;
+}
+
void dump_runq(unsigned char key)
{
unsigned long flags;
diff --git a/xen/include/xen/sched-if.h b/xen/common/sched/sched-if.h
similarity index 99%
rename from xen/include/xen/sched-if.h
rename to xen/common/sched/sched-if.h
index b0ac54e63d..a702fd23b1 100644
--- a/xen/include/xen/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -12,9 +12,6 @@
#include <xen/err.h>
#include <xen/rcupdate.h>
-/* A global pointer to the initial cpupool (POOL0). */
-extern struct cpupool *cpupool0;
-
/* cpus currently in no cpupool */
extern cpumask_t cpupool_free_cpus;
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index 565575c326..fe15754900 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -26,7 +26,6 @@
#include <xen/lib.h>
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/timer.h>
#include <xen/softirq.h>
#include <xen/time.h>
@@ -35,6 +34,8 @@
#include <xen/guest_access.h>
#include <public/sysctl.h>
+#include "sched-if.h"
+
/**************************************************************************
* Private Macros *
**************************************************************************/
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index aa41a3301b..a098ca0f3a 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -15,7 +15,6 @@
#include <xen/delay.h>
#include <xen/event.h>
#include <xen/time.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/atomic.h>
#include <asm/div64.h>
@@ -24,6 +23,7 @@
#include <xen/trace.h>
#include <xen/err.h>
+#include "sched-if.h"
/*
* Locking:
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index f7c477053c..5bfe1441a2 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -18,7 +18,6 @@
#include <xen/event.h>
#include <xen/time.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/div64.h>
#include <xen/errno.h>
@@ -26,6 +25,8 @@
#include <xen/cpu.h>
#include <xen/keyhandler.h>
+#include "sched-if.h"
+
/* Meant only for helping developers during debugging. */
/* #define d2printk printk */
#define d2printk(x...)
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 3f3418c9b1..5a23a7e7dc 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -29,10 +29,11 @@
*/
#include <xen/sched.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <xen/trace.h>
+#include "sched-if.h"
+
/*
* null tracing events. Check include/public/trace.h for more details.
*/
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index b2b29481f3..379b56bc2a 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -20,7 +20,6 @@
#include <xen/time.h>
#include <xen/timer.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <asm/atomic.h>
#include <xen/errno.h>
@@ -31,6 +30,8 @@
#include <xen/err.h>
#include <xen/guest_access.h>
+#include "sched-if.h"
+
/*
* TODO:
*
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index a550dd8f93..c751faa741 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -23,7 +23,6 @@
#include <xen/time.h>
#include <xen/timer.h>
#include <xen/perfc.h>
-#include <xen/sched-if.h>
#include <xen/softirq.h>
#include <xen/trace.h>
#include <xen/mm.h>
@@ -38,6 +37,8 @@
#include <xsm/xsm.h>
#include <xen/err.h>
+#include "sched-if.h"
+
#ifdef CONFIG_XEN_GUEST
#include <asm/guest.h>
#else
@@ -1607,6 +1608,194 @@ int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason)
return ret;
}
+static inline
+int vcpuaffinity_params_invalid(const struct xen_domctl_vcpuaffinity *vcpuaff)
+{
+ return vcpuaff->flags == 0 ||
+ ((vcpuaff->flags & XEN_VCPUAFFINITY_HARD) &&
+ guest_handle_is_null(vcpuaff->cpumap_hard.bitmap)) ||
+ ((vcpuaff->flags & XEN_VCPUAFFINITY_SOFT) &&
+ guest_handle_is_null(vcpuaff->cpumap_soft.bitmap));
+}
+
+int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
+ struct xen_domctl_vcpuaffinity *vcpuaff)
+{
+ struct vcpu *v;
+ const struct sched_unit *unit;
+ int ret = 0;
+
+ if ( vcpuaff->vcpu >= d->max_vcpus )
+ return -EINVAL;
+
+ if ( (v = d->vcpu[vcpuaff->vcpu]) == NULL )
+ return -ESRCH;
+
+ if ( vcpuaffinity_params_invalid(vcpuaff) )
+ return -EINVAL;
+
+ unit = v->sched_unit;
+
+ if ( cmd == XEN_DOMCTL_setvcpuaffinity )
+ {
+ cpumask_var_t new_affinity, old_affinity;
+ cpumask_t *online = cpupool_domain_master_cpumask(v->domain);
+
+ /*
+ * We want to be able to restore hard affinity if we are trying
+ * setting both and changing soft affinity (which happens later,
+ * when hard affinity has been succesfully chaged already) fails.
+ */
+ if ( !alloc_cpumask_var(&old_affinity) )
+ return -ENOMEM;
+
+ cpumask_copy(old_affinity, unit->cpu_hard_affinity);
+
+ if ( !alloc_cpumask_var(&new_affinity) )
+ {
+ free_cpumask_var(old_affinity);
+ return -ENOMEM;
+ }
+
+ /* Undo a stuck SCHED_pin_override? */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_FORCE )
+ vcpu_temporary_affinity(v, NR_CPUS, VCPU_AFFINITY_OVERRIDE);
+
+ ret = 0;
+
+ /*
+ * We both set a new affinity and report back to the caller what
+ * the scheduler will be effectively using.
+ */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ {
+ ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
+ &vcpuaff->cpumap_hard, nr_cpu_ids);
+ if ( !ret )
+ ret = vcpu_set_hard_affinity(v, new_affinity);
+ if ( ret )
+ goto setvcpuaffinity_out;
+
+ /*
+ * For hard affinity, what we return is the intersection of
+ * cpupool's online mask and the new hard affinity.
+ */
+ cpumask_and(new_affinity, online, unit->cpu_hard_affinity);
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard, new_affinity);
+ }
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
+ {
+ ret = xenctl_bitmap_to_bitmap(cpumask_bits(new_affinity),
+ &vcpuaff->cpumap_soft, nr_cpu_ids);
+ if ( !ret)
+ ret = vcpu_set_soft_affinity(v, new_affinity);
+ if ( ret )
+ {
+ /*
+ * Since we're returning error, the caller expects nothing
+ * happened, so we rollback the changes to hard affinity
+ * (if any).
+ */
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ vcpu_set_hard_affinity(v, old_affinity);
+ goto setvcpuaffinity_out;
+ }
+
+ /*
+ * For soft affinity, we return the intersection between the
+ * new soft affinity, the cpupool's online map and the (new)
+ * hard affinity.
+ */
+ cpumask_and(new_affinity, new_affinity, online);
+ cpumask_and(new_affinity, new_affinity, unit->cpu_hard_affinity);
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft, new_affinity);
+ }
+
+ setvcpuaffinity_out:
+ free_cpumask_var(new_affinity);
+ free_cpumask_var(old_affinity);
+ }
+ else
+ {
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_HARD )
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_hard,
+ unit->cpu_hard_affinity);
+ if ( vcpuaff->flags & XEN_VCPUAFFINITY_SOFT )
+ ret = cpumask_to_xenctl_bitmap(&vcpuaff->cpumap_soft,
+ unit->cpu_soft_affinity);
+ }
+
+ return ret;
+}
+
+void domain_update_node_affinity(struct domain *d)
+{
+ cpumask_var_t dom_cpumask, dom_cpumask_soft;
+ cpumask_t *dom_affinity;
+ const cpumask_t *online;
+ struct sched_unit *unit;
+ unsigned int cpu;
+
+ /* Do we have vcpus already? If not, no need to update node-affinity. */
+ if ( !d->vcpu || !d->vcpu[0] )
+ return;
+
+ if ( !zalloc_cpumask_var(&dom_cpumask) )
+ return;
+ if ( !zalloc_cpumask_var(&dom_cpumask_soft) )
+ {
+ free_cpumask_var(dom_cpumask);
+ return;
+ }
+
+ online = cpupool_domain_master_cpumask(d);
+
+ spin_lock(&d->node_affinity_lock);
+
+ /*
+ * If d->auto_node_affinity is true, let's compute the domain's
+ * node-affinity and update d->node_affinity accordingly. if false,
+ * just leave d->auto_node_affinity alone.
+ */
+ if ( d->auto_node_affinity )
+ {
+ /*
+ * We want the narrowest possible set of pcpus (to get the narowest
+ * possible set of nodes). What we need is the cpumask of where the
+ * domain can run (the union of the hard affinity of all its vcpus),
+ * and the full mask of where it would prefer to run (the union of
+ * the soft affinity of all its various vcpus). Let's build them.
+ */
+ for_each_sched_unit ( d, unit )
+ {
+ cpumask_or(dom_cpumask, dom_cpumask, unit->cpu_hard_affinity);
+ cpumask_or(dom_cpumask_soft, dom_cpumask_soft,
+ unit->cpu_soft_affinity);
+ }
+ /* Filter out non-online cpus */
+ cpumask_and(dom_cpumask, dom_cpumask, online);
+ ASSERT(!cpumask_empty(dom_cpumask));
+ /* And compute the intersection between hard, online and soft */
+ cpumask_and(dom_cpumask_soft, dom_cpumask_soft, dom_cpumask);
+
+ /*
+ * If not empty, the intersection of hard, soft and online is the
+ * narrowest set we want. If empty, we fall back to hard&online.
+ */
+ dom_affinity = cpumask_empty(dom_cpumask_soft) ?
+ dom_cpumask : dom_cpumask_soft;
+
+ nodes_clear(d->node_affinity);
+ for_each_cpu ( cpu, dom_affinity )
+ node_set(cpu_to_node(cpu), d->node_affinity);
+ }
+
+ spin_unlock(&d->node_affinity_lock);
+
+ free_cpumask_var(dom_cpumask_soft);
+ free_cpumask_var(dom_cpumask);
+}
+
typedef long ret_t;
#endif /* !COMPAT */
diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
index 769302057b..c931eab4a9 100644
--- a/xen/include/xen/domain.h
+++ b/xen/include/xen/domain.h
@@ -27,6 +27,9 @@ struct xen_domctl_getdomaininfo;
void getdomaininfo(struct domain *d, struct xen_domctl_getdomaininfo *info);
void arch_get_domain_info(const struct domain *d,
struct xen_domctl_getdomaininfo *info);
+int xenctl_bitmap_to_bitmap(unsigned long *bitmap,
+ const struct xenctl_bitmap *xenctl_bitmap,
+ unsigned int nbits);
/*
* Arch-specifics.
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 9f7bc69293..2507a833c2 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -50,6 +50,9 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
/* A global pointer to the hardware domain (usually DOM0). */
extern struct domain *hardware_domain;
+/* A global pointer to the initial cpupool (POOL0). */
+extern struct cpupool *cpupool0;
+
#ifdef CONFIG_LATE_HWDOM
extern domid_t hardware_domid;
#else
@@ -929,6 +932,8 @@ int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason);
int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity);
int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity);
void restore_vcpu_affinity(struct domain *d);
+int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
+ struct xen_domctl_vcpuaffinity *vcpuaff);
void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate);
uint64_t get_cpu_idle_time(unsigned int cpu);
@@ -1054,6 +1059,8 @@ int cpupool_add_domain(struct domain *d, int poolid);
void cpupool_rm_domain(struct domain *d);
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
+int cpupool_get_id(const struct domain *d);
+cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
void schedule_dump(struct cpupool *c);
extern void dump_runq(unsigned char key);
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, George Dunlap
<george.dunlap@xxxxxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, "Andrew
Cooper" <andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>,
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Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>, Stefano Stabellini
<sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
Subject: [PATCH 3/9] xen/sched: cleanup sched.h
Date: Wed, 18 Dec 2019 08:48:53 +0100
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There are some items in include/xen/sched.h which can be moved to
sched-if.h as they are scheduler private.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/sched-if.h | 13 +++++++++++++
xen/common/sched/schedule.c | 2 +-
xen/include/xen/sched.h | 17 -----------------
3 files changed, 14 insertions(+), 18 deletions(-)
diff --git a/xen/common/sched/sched-if.h b/xen/common/sched/sched-if.h
index a702fd23b1..edce354dc7 100644
--- a/xen/common/sched/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -533,6 +533,7 @@ static inline void sched_unit_unpause(const struct sched_unit *unit)
struct cpupool
{
int cpupool_id;
+#define CPUPOOLID_NONE -1
unsigned int n_dom;
cpumask_var_t cpu_valid; /* all cpus assigned to pool */
cpumask_var_t res_valid; /* all scheduling resources of pool */
@@ -618,5 +619,17 @@ affinity_balance_cpumask(const struct sched_unit *unit, int step,
void sched_rm_cpu(unsigned int cpu);
const cpumask_t *sched_get_opt_cpumask(enum sched_gran opt, unsigned int cpu);
+void schedule_dump(struct cpupool *c);
+struct scheduler *scheduler_get_default(void);
+struct scheduler *scheduler_alloc(unsigned int sched_id, int *perr);
+void scheduler_free(struct scheduler *sched);
+int cpu_disable_scheduler(unsigned int cpu);
+int schedule_cpu_add(unsigned int cpu, struct cpupool *c);
+int schedule_cpu_rm(unsigned int cpu);
+int sched_move_domain(struct domain *d, struct cpupool *c);
+struct cpupool *cpupool_get_by_id(int poolid);
+void cpupool_put(struct cpupool *pool);
+int cpupool_add_domain(struct domain *d, int poolid);
+void cpupool_rm_domain(struct domain *d);
#endif /* __XEN_SCHED_IF_H__ */
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index c751faa741..db8ce146ca 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -1346,7 +1346,7 @@ int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity)
return vcpu_set_affinity(v, affinity, v->sched_unit->cpu_hard_affinity);
}
-int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity)
+static int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity)
{
return vcpu_set_affinity(v, affinity, v->sched_unit->cpu_soft_affinity);
}
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 2507a833c2..55335d6ab3 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -685,7 +685,6 @@ int sched_init_vcpu(struct vcpu *v);
void sched_destroy_vcpu(struct vcpu *v);
int sched_init_domain(struct domain *d, int poolid);
void sched_destroy_domain(struct domain *d);
-int sched_move_domain(struct domain *d, struct cpupool *c);
long sched_adjust(struct domain *, struct xen_domctl_scheduler_op *);
long sched_adjust_global(struct xen_sysctl_scheduler_op *);
int sched_id(void);
@@ -918,19 +917,10 @@ static inline bool sched_has_urgent_vcpu(void)
return atomic_read(&this_cpu(sched_urgent_count));
}
-struct scheduler;
-
-struct scheduler *scheduler_get_default(void);
-struct scheduler *scheduler_alloc(unsigned int sched_id, int *perr);
-void scheduler_free(struct scheduler *sched);
-int schedule_cpu_add(unsigned int cpu, struct cpupool *c);
-int schedule_cpu_rm(unsigned int cpu);
void vcpu_set_periodic_timer(struct vcpu *v, s_time_t value);
-int cpu_disable_scheduler(unsigned int cpu);
void sched_setup_dom0_vcpus(struct domain *d);
int vcpu_temporary_affinity(struct vcpu *v, unsigned int cpu, uint8_t reason);
int vcpu_set_hard_affinity(struct vcpu *v, const cpumask_t *affinity);
-int vcpu_set_soft_affinity(struct vcpu *v, const cpumask_t *affinity);
void restore_vcpu_affinity(struct domain *d);
int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
struct xen_domctl_vcpuaffinity *vcpuaff);
@@ -1051,17 +1041,10 @@ extern enum cpufreq_controller {
FREQCTL_none, FREQCTL_dom0_kernel, FREQCTL_xen
} cpufreq_controller;
-#define CPUPOOLID_NONE -1
-
-struct cpupool *cpupool_get_by_id(int poolid);
-void cpupool_put(struct cpupool *pool);
-int cpupool_add_domain(struct domain *d, int poolid);
-void cpupool_rm_domain(struct domain *d);
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
int cpupool_get_id(const struct domain *d);
cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
-void schedule_dump(struct cpupool *c);
extern void dump_runq(unsigned char key);
void arch_do_physinfo(struct xen_sysctl_physinfo *pi);
--
2.16.4
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Wed, 18 Dec 2019 07:49:03 +0000 (UTC)
From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, George Dunlap
<george.dunlap@xxxxxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>
Subject: [PATCH 4/9] xen/sched: remove special cases for free cpus in schedulers
Date: Wed, 18 Dec 2019 08:48:54 +0100
Message-ID: <20191218074859.21665-5-jgross@xxxxxxxx>
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With the idle scheduler now taking care of all cpus not in any cpupool
the special cases in the other schedulers for no cpupool associated
can be removed.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/sched_credit.c | 7 ++-----
xen/common/sched/sched_credit2.c | 30 ------------------------------
2 files changed, 2 insertions(+), 35 deletions(-)
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index a098ca0f3a..8b1de9b033 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -1690,11 +1690,8 @@ csched_load_balance(struct csched_private *prv, int cpu,
BUG_ON(get_sched_res(cpu) != snext->unit->res);
- /*
- * If this CPU is going offline, or is not (yet) part of any cpupool
- * (as it happens, e.g., during cpu bringup), we shouldn't steal work.
- */
- if ( unlikely(!cpumask_test_cpu(cpu, online) || c == NULL) )
+ /* If this CPU is going offline, we shouldn't steal work. */
+ if ( unlikely(!cpumask_test_cpu(cpu, online)) )
goto out;
if ( snext->pri == CSCHED_PRI_IDLE )
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index 5bfe1441a2..f9e521a3a8 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -2744,40 +2744,10 @@ static void
csched2_unit_migrate(
const struct scheduler *ops, struct sched_unit *unit, unsigned int new_cpu)
{
- struct domain *d = unit->domain;
struct csched2_unit * const svc = csched2_unit(unit);
struct csched2_runqueue_data *trqd;
s_time_t now = NOW();
- /*
- * Being passed a target pCPU which is outside of our cpupool is only
- * valid if we are shutting down (or doing ACPI suspend), and we are
- * moving everyone to BSP, no matter whether or not BSP is inside our
- * cpupool.
- *
- * And since there indeed is the chance that it is not part of it, all
- * we must do is remove _and_ unassign the unit from any runqueue, as
- * well as updating v->processor with the target, so that the suspend
- * process can continue.
- *
- * It will then be during resume that a new, meaningful, value for
- * v->processor will be chosen, and during actual domain unpause that
- * the unit will be assigned to and added to the proper runqueue.
- */
- if ( unlikely(!cpumask_test_cpu(new_cpu, cpupool_domain_master_cpumask(d))) )
- {
- ASSERT(system_state == SYS_STATE_suspend);
- if ( unit_on_runq(svc) )
- {
- runq_remove(svc);
- update_load(ops, svc->rqd, NULL, -1, now);
- }
- _runq_deassign(svc);
- sched_set_res(unit, get_sched_res(new_cpu));
- return;
- }
-
- /* If here, new_cpu must be a valid Credit2 pCPU, and in our affinity. */
ASSERT(cpumask_test_cpu(new_cpu, &csched2_priv(ops)->initialized));
ASSERT(cpumask_test_cpu(new_cpu, unit->cpu_hard_affinity));
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, Meng
Xu <mengxu@xxxxxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Subject: [PATCH 5/9] xen/sched: use scratch cpumask instead of allocating it on the stack
Date: Wed, 18 Dec 2019 08:48:55 +0100
Message-ID: <20191218074859.21665-6-jgross@xxxxxxxx>
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In sched_rt there are three instances of cpumasks allocated on the
stack. Replace them by using cpumask_scratch.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/sched_rt.c | 56 ++++++++++++++++++++++++++++++---------------
1 file changed, 37 insertions(+), 19 deletions(-)
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 379b56bc2a..264a753116 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -637,23 +637,38 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
* and available resources
*/
static struct sched_resource *
-rt_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
+rt_res_pick_locked(const struct sched_unit *unit, unsigned int locked_cpu)
{
- cpumask_t cpus;
+ cpumask_t *cpus = cpumask_scratch_cpu(locked_cpu);
cpumask_t *online;
int cpu;
online = cpupool_domain_master_cpumask(unit->domain);
- cpumask_and(&cpus, online, unit->cpu_hard_affinity);
+ cpumask_and(cpus, online, unit->cpu_hard_affinity);
- cpu = cpumask_test_cpu(sched_unit_master(unit), &cpus)
+ cpu = cpumask_test_cpu(sched_unit_master(unit), cpus)
? sched_unit_master(unit)
- : cpumask_cycle(sched_unit_master(unit), &cpus);
- ASSERT( !cpumask_empty(&cpus) && cpumask_test_cpu(cpu, &cpus) );
+ : cpumask_cycle(sched_unit_master(unit), cpus);
+ ASSERT( !cpumask_empty(cpus) && cpumask_test_cpu(cpu, cpus) );
return get_sched_res(cpu);
}
+/*
+ * Pick a valid resource for the unit vc
+ * Valid resource of an unit is intesection of unit's affinity
+ * and available resources
+ */
+static struct sched_resource *
+rt_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
+{
+ struct sched_resource *res;
+
+ res = rt_res_pick_locked(unit, unit->res->master_cpu);
+
+ return res;
+}
+
/*
* Init/Free related code
*/
@@ -886,11 +901,14 @@ rt_unit_insert(const struct scheduler *ops, struct sched_unit *unit)
struct rt_unit *svc = rt_unit(unit);
s_time_t now;
spinlock_t *lock;
+ unsigned int cpu = smp_processor_id();
BUG_ON( is_idle_unit(unit) );
/* This is safe because unit isn't yet being scheduled */
- sched_set_res(unit, rt_res_pick(ops, unit));
+ lock = pcpu_schedule_lock_irq(cpu);
+ sched_set_res(unit, rt_res_pick_locked(unit, cpu));
+ pcpu_schedule_unlock_irq(lock, cpu);
lock = unit_schedule_lock_irq(unit);
@@ -1003,13 +1021,13 @@ burn_budget(const struct scheduler *ops, struct rt_unit *svc, s_time_t now)
* lock is grabbed before calling this function
*/
static struct rt_unit *
-runq_pick(const struct scheduler *ops, const cpumask_t *mask)
+runq_pick(const struct scheduler *ops, const cpumask_t *mask, unsigned int cpu)
{
struct list_head *runq = rt_runq(ops);
struct list_head *iter;
struct rt_unit *svc = NULL;
struct rt_unit *iter_svc = NULL;
- cpumask_t cpu_common;
+ cpumask_t *cpu_common = cpumask_scratch_cpu(cpu);
cpumask_t *online;
list_for_each ( iter, runq )
@@ -1018,9 +1036,9 @@ runq_pick(const struct scheduler *ops, const cpumask_t *mask)
/* mask cpu_hard_affinity & cpupool & mask */
online = cpupool_domain_master_cpumask(iter_svc->unit->domain);
- cpumask_and(&cpu_common, online, iter_svc->unit->cpu_hard_affinity);
- cpumask_and(&cpu_common, mask, &cpu_common);
- if ( cpumask_empty(&cpu_common) )
+ cpumask_and(cpu_common, online, iter_svc->unit->cpu_hard_affinity);
+ cpumask_and(cpu_common, mask, cpu_common);
+ if ( cpumask_empty(cpu_common) )
continue;
ASSERT( iter_svc->cur_budget > 0 );
@@ -1092,7 +1110,7 @@ rt_schedule(const struct scheduler *ops, struct sched_unit *currunit,
}
else
{
- snext = runq_pick(ops, cpumask_of(sched_cpu));
+ snext = runq_pick(ops, cpumask_of(sched_cpu), cur_cpu);
if ( snext == NULL )
snext = rt_unit(sched_idle_unit(sched_cpu));
@@ -1186,22 +1204,22 @@ runq_tickle(const struct scheduler *ops, struct rt_unit *new)
struct rt_unit *iter_svc;
struct sched_unit *iter_unit;
int cpu = 0, cpu_to_tickle = 0;
- cpumask_t not_tickled;
+ cpumask_t *not_tickled = cpumask_scratch_cpu(smp_processor_id());
cpumask_t *online;
if ( new == NULL || is_idle_unit(new->unit) )
return;
online = cpupool_domain_master_cpumask(new->unit->domain);
- cpumask_and(¬_tickled, online, new->unit->cpu_hard_affinity);
- cpumask_andnot(¬_tickled, ¬_tickled, &prv->tickled);
+ cpumask_and(not_tickled, online, new->unit->cpu_hard_affinity);
+ cpumask_andnot(not_tickled, not_tickled, &prv->tickled);
/*
* 1) If there are any idle CPUs, kick one.
* For cache benefit,we first search new->cpu.
* The same loop also find the one with lowest priority.
*/
- cpu = cpumask_test_or_cycle(sched_unit_master(new->unit), ¬_tickled);
+ cpu = cpumask_test_or_cycle(sched_unit_master(new->unit), not_tickled);
while ( cpu!= nr_cpu_ids )
{
iter_unit = curr_on_cpu(cpu);
@@ -1216,8 +1234,8 @@ runq_tickle(const struct scheduler *ops, struct rt_unit *new)
compare_unit_priority(iter_svc, latest_deadline_unit) < 0 )
latest_deadline_unit = iter_svc;
- cpumask_clear_cpu(cpu, ¬_tickled);
- cpu = cpumask_cycle(cpu, ¬_tickled);
+ cpumask_clear_cpu(cpu, not_tickled);
+ cpu = cpumask_cycle(cpu, not_tickled);
}
/* 2) candicate has higher priority, kick out lowest priority unit */
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, George Dunlap
<george.dunlap@xxxxxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>
Subject: [PATCH 6/9] xen/sched: replace null scheduler percpu-variable with pdata hook
Date: Wed, 18 Dec 2019 08:48:56 +0100
Message-ID: <20191218074859.21665-7-jgross@xxxxxxxx>
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Instead of having an own percpu-variable for private data per cpu the
generic scheduler interface for that purpose should be used.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/sched_null.c | 89 +++++++++++++++++++++++++++++--------------
1 file changed, 60 insertions(+), 29 deletions(-)
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 5a23a7e7dc..11aab25743 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -89,7 +89,6 @@ struct null_private {
struct null_pcpu {
struct sched_unit *unit;
};
-DEFINE_PER_CPU(struct null_pcpu, npc);
/*
* Schedule unit
@@ -159,32 +158,48 @@ static void null_deinit(struct scheduler *ops)
ops->sched_data = NULL;
}
-static void init_pdata(struct null_private *prv, unsigned int cpu)
+static void init_pdata(struct null_private *prv, struct null_pcpu *npc,
+ unsigned int cpu)
{
/* Mark the pCPU as free, and with no unit assigned */
cpumask_set_cpu(cpu, &prv->cpus_free);
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
}
static void null_init_pdata(const struct scheduler *ops, void *pdata, int cpu)
{
struct null_private *prv = null_priv(ops);
- /* alloc_pdata is not implemented, so we want this to be NULL. */
- ASSERT(!pdata);
+ ASSERT(pdata);
- init_pdata(prv, cpu);
+ init_pdata(prv, pdata, cpu);
}
static void null_deinit_pdata(const struct scheduler *ops, void *pcpu, int cpu)
{
struct null_private *prv = null_priv(ops);
+ struct null_pcpu *npc = pcpu;
- /* alloc_pdata not implemented, so this must have stayed NULL */
- ASSERT(!pcpu);
+ ASSERT(npc);
cpumask_clear_cpu(cpu, &prv->cpus_free);
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
+}
+
+static void *null_alloc_pdata(const struct scheduler *ops, int cpu)
+{
+ struct null_pcpu *npc;
+
+ npc = xzalloc(struct null_pcpu);
+ if ( npc == NULL )
+ return ERR_PTR(-ENOMEM);
+
+ return npc;
+}
+
+static void null_free_pdata(const struct scheduler *ops, void *pcpu, int cpu)
+{
+ xfree(pcpu);
}
static void *null_alloc_udata(const struct scheduler *ops,
@@ -268,6 +283,7 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
unsigned int bs;
unsigned int cpu = sched_unit_master(unit), new_cpu;
cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(spin_is_locked(get_sched_res(cpu)->schedule_lock));
@@ -286,8 +302,7 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
* don't, so we get to keep in the scratch cpumask what we have just
* put in it.)
*/
- if ( likely((per_cpu(npc, cpu).unit == NULL ||
- per_cpu(npc, cpu).unit == unit)
+ if ( likely((npc->unit == NULL || npc->unit == unit)
&& cpumask_test_cpu(cpu, cpumask_scratch_cpu(cpu))) )
{
new_cpu = cpu;
@@ -336,9 +351,11 @@ pick_res(struct null_private *prv, const struct sched_unit *unit)
static void unit_assign(struct null_private *prv, struct sched_unit *unit,
unsigned int cpu)
{
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+
ASSERT(is_unit_online(unit));
- per_cpu(npc, cpu).unit = unit;
+ npc->unit = unit;
sched_set_res(unit, get_sched_res(cpu));
cpumask_clear_cpu(cpu, &prv->cpus_free);
@@ -363,12 +380,13 @@ static bool unit_deassign(struct null_private *prv, struct sched_unit *unit)
unsigned int bs;
unsigned int cpu = sched_unit_master(unit);
struct null_unit *wvc;
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(list_empty(&null_unit(unit)->waitq_elem));
- ASSERT(per_cpu(npc, cpu).unit == unit);
+ ASSERT(npc->unit == unit);
ASSERT(!cpumask_test_cpu(cpu, &prv->cpus_free));
- per_cpu(npc, cpu).unit = NULL;
+ npc->unit = NULL;
cpumask_set_cpu(cpu, &prv->cpus_free);
dprintk(XENLOG_G_INFO, "%d <-- NULL (%pdv%d)\n", cpu, unit->domain,
@@ -436,7 +454,7 @@ static spinlock_t *null_switch_sched(struct scheduler *new_ops,
*/
ASSERT(!local_irq_is_enabled());
- init_pdata(prv, cpu);
+ init_pdata(prv, pdata, cpu);
return &sr->_lock;
}
@@ -446,6 +464,7 @@ static void null_unit_insert(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
+ struct null_pcpu *npc;
unsigned int cpu;
spinlock_t *lock;
@@ -462,6 +481,7 @@ static void null_unit_insert(const struct scheduler *ops,
retry:
sched_set_res(unit, pick_res(prv, unit));
cpu = sched_unit_master(unit);
+ npc = get_sched_res(cpu)->sched_priv;
spin_unlock(lock);
@@ -471,7 +491,7 @@ static void null_unit_insert(const struct scheduler *ops,
cpupool_domain_master_cpumask(unit->domain));
/* If the pCPU is free, we assign unit to it */
- if ( likely(per_cpu(npc, cpu).unit == NULL) )
+ if ( likely(npc->unit == NULL) )
{
/*
* Insert is followed by vcpu_wake(), so there's no need to poke
@@ -519,7 +539,10 @@ static void null_unit_remove(const struct scheduler *ops,
/* If offline, the unit shouldn't be assigned, nor in the waitqueue */
if ( unlikely(!is_unit_online(unit)) )
{
- ASSERT(per_cpu(npc, sched_unit_master(unit)).unit != unit);
+ struct null_pcpu *npc;
+
+ npc = unit->res->sched_priv;
+ ASSERT(npc->unit != unit);
ASSERT(list_empty(&nvc->waitq_elem));
goto out;
}
@@ -548,6 +571,7 @@ static void null_unit_wake(const struct scheduler *ops,
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
unsigned int cpu = sched_unit_master(unit);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(!is_idle_unit(unit));
@@ -569,7 +593,7 @@ static void null_unit_wake(const struct scheduler *ops,
else
SCHED_STAT_CRANK(unit_wake_not_runnable);
- if ( likely(per_cpu(npc, cpu).unit == unit) )
+ if ( likely(npc->unit == unit) )
{
cpu_raise_softirq(cpu, SCHEDULE_SOFTIRQ);
return;
@@ -581,7 +605,7 @@ static void null_unit_wake(const struct scheduler *ops,
* and its previous resource is free (and affinities match), we can just
* assign the unit to it (we own the proper lock already) and be done.
*/
- if ( per_cpu(npc, cpu).unit == NULL &&
+ if ( npc->unit == NULL &&
unit_check_affinity(unit, cpu, BALANCE_HARD_AFFINITY) )
{
if ( !has_soft_affinity(unit) ||
@@ -622,6 +646,7 @@ static void null_unit_sleep(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
unsigned int cpu = sched_unit_master(unit);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
bool tickled = false;
ASSERT(!is_idle_unit(unit));
@@ -640,7 +665,7 @@ static void null_unit_sleep(const struct scheduler *ops,
list_del_init(&nvc->waitq_elem);
spin_unlock(&prv->waitq_lock);
}
- else if ( per_cpu(npc, cpu).unit == unit )
+ else if ( npc->unit == unit )
tickled = unit_deassign(prv, unit);
}
@@ -663,6 +688,7 @@ static void null_unit_migrate(const struct scheduler *ops,
{
struct null_private *prv = null_priv(ops);
struct null_unit *nvc = null_unit(unit);
+ struct null_pcpu *npc;
ASSERT(!is_idle_unit(unit));
@@ -686,7 +712,8 @@ static void null_unit_migrate(const struct scheduler *ops,
* If unit is assigned to a pCPU, then such pCPU becomes free, and we
* should look in the waitqueue if anyone else can be assigned to it.
*/
- if ( likely(per_cpu(npc, sched_unit_master(unit)).unit == unit) )
+ npc = unit->res->sched_priv;
+ if ( likely(npc->unit == unit) )
{
unit_deassign(prv, unit);
SCHED_STAT_CRANK(migrate_running);
@@ -720,7 +747,8 @@ static void null_unit_migrate(const struct scheduler *ops,
*
* In latter, all we can do is to park unit in the waitqueue.
*/
- if ( per_cpu(npc, new_cpu).unit == NULL &&
+ npc = get_sched_res(new_cpu)->sched_priv;
+ if ( npc->unit == NULL &&
unit_check_affinity(unit, new_cpu, BALANCE_HARD_AFFINITY) )
{
/* unit might have been in the waitqueue, so remove it */
@@ -788,6 +816,7 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
unsigned int bs;
const unsigned int cur_cpu = smp_processor_id();
const unsigned int sched_cpu = sched_get_resource_cpu(cur_cpu);
+ struct null_pcpu *npc = get_sched_res(sched_cpu)->sched_priv;
struct null_private *prv = null_priv(ops);
struct null_unit *wvc;
@@ -802,14 +831,14 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
} d;
d.cpu = cur_cpu;
d.tasklet = tasklet_work_scheduled;
- if ( per_cpu(npc, sched_cpu).unit == NULL )
+ if ( npc->unit == NULL )
{
d.unit = d.dom = -1;
}
else
{
- d.unit = per_cpu(npc, sched_cpu).unit->unit_id;
- d.dom = per_cpu(npc, sched_cpu).unit->domain->domain_id;
+ d.unit = npc->unit->unit_id;
+ d.dom = npc->unit->domain->domain_id;
}
__trace_var(TRC_SNULL_SCHEDULE, 1, sizeof(d), &d);
}
@@ -820,7 +849,7 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
prev->next_task = sched_idle_unit(sched_cpu);
}
else
- prev->next_task = per_cpu(npc, sched_cpu).unit;
+ prev->next_task = npc->unit;
prev->next_time = -1;
/*
@@ -921,6 +950,7 @@ static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
static void null_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct null_private *prv = null_priv(ops);
+ struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
struct null_unit *nvc;
spinlock_t *lock;
unsigned long flags;
@@ -930,9 +960,8 @@ static void null_dump_pcpu(const struct scheduler *ops, int cpu)
printk("CPU[%02d] sibling={%*pbl}, core={%*pbl}",
cpu, CPUMASK_PR(per_cpu(cpu_sibling_mask, cpu)),
CPUMASK_PR(per_cpu(cpu_core_mask, cpu)));
- if ( per_cpu(npc, cpu).unit != NULL )
- printk(", unit=%pdv%d", per_cpu(npc, cpu).unit->domain,
- per_cpu(npc, cpu).unit->unit_id);
+ if ( npc->unit != NULL )
+ printk(", unit=%pdv%d", npc->unit->domain, npc->unit->unit_id);
printk("\n");
/* current unit (nothing to say if that's the idle unit) */
@@ -1010,6 +1039,8 @@ static const struct scheduler sched_null_def = {
.init = null_init,
.deinit = null_deinit,
+ .alloc_pdata = null_alloc_pdata,
+ .free_pdata = null_free_pdata,
.init_pdata = null_init_pdata,
.switch_sched = null_switch_sched,
.deinit_pdata = null_deinit_pdata,
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>,
George Dunlap <george.dunlap@xxxxxxxxxxxxx>, Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, "Jan
Beulich" <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Konrad
Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>, Stefano Stabellini
<sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Josh Whitehead
<josh.whitehead@xxxxxxxxxxxxxxx>, Stewart Hildebrand
<stewart.hildebrand@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>
Subject: [PATCH 7/9] xen/sched: switch scheduling to bool where appropriate
Date: Wed, 18 Dec 2019 08:48:57 +0100
Message-ID: <20191218074859.21665-8-jgross@xxxxxxxx>
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Scheduling code has several places using int or bool_t instead of bool.
Switch those.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/cpupool.c | 10 +++++-----
xen/common/sched/sched-if.h | 2 +-
xen/common/sched/sched_arinc653.c | 8 ++++----
xen/common/sched/sched_credit.c | 12 ++++++------
xen/common/sched/sched_rt.c | 14 +++++++-------
xen/common/sched/schedule.c | 14 +++++++-------
xen/include/xen/sched.h | 6 +++---
7 files changed, 33 insertions(+), 33 deletions(-)
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index d5b64d0a6a..14212bb4ae 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -154,7 +154,7 @@ static struct cpupool *alloc_cpupool_struct(void)
* the searched id is returned
* returns NULL if not found.
*/
-static struct cpupool *__cpupool_find_by_id(int id, int exact)
+static struct cpupool *__cpupool_find_by_id(int id, bool exact)
{
struct cpupool **q;
@@ -169,10 +169,10 @@ static struct cpupool *__cpupool_find_by_id(int id, int exact)
static struct cpupool *cpupool_find_by_id(int poolid)
{
- return __cpupool_find_by_id(poolid, 1);
+ return __cpupool_find_by_id(poolid, true);
}
-static struct cpupool *__cpupool_get_by_id(int poolid, int exact)
+static struct cpupool *__cpupool_get_by_id(int poolid, bool exact)
{
struct cpupool *c;
spin_lock(&cpupool_lock);
@@ -185,12 +185,12 @@ static struct cpupool *__cpupool_get_by_id(int poolid, int exact)
struct cpupool *cpupool_get_by_id(int poolid)
{
- return __cpupool_get_by_id(poolid, 1);
+ return __cpupool_get_by_id(poolid, true);
}
static struct cpupool *cpupool_get_next_by_id(int poolid)
{
- return __cpupool_get_by_id(poolid, 0);
+ return __cpupool_get_by_id(poolid, false);
}
void cpupool_put(struct cpupool *pool)
diff --git a/xen/common/sched/sched-if.h b/xen/common/sched/sched-if.h
index edce354dc7..9d0db75cbb 100644
--- a/xen/common/sched/sched-if.h
+++ b/xen/common/sched/sched-if.h
@@ -589,7 +589,7 @@ unsigned int cpupool_get_granularity(const struct cpupool *c);
* * The hard affinity is not a subset of soft affinity
* * There is an overlap between the soft and hard affinity masks
*/
-static inline int has_soft_affinity(const struct sched_unit *unit)
+static inline bool has_soft_affinity(const struct sched_unit *unit)
{
return unit->soft_aff_effective &&
!cpumask_subset(cpupool_domain_master_cpumask(unit->domain),
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index fe15754900..dc45378952 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -75,7 +75,7 @@ typedef struct arinc653_unit_s
* arinc653_unit_t pointer. */
struct sched_unit * unit;
/* awake holds whether the UNIT has been woken with vcpu_wake() */
- bool_t awake;
+ bool awake;
/* list holds the linked list information for the list this UNIT
* is stored in */
struct list_head list;
@@ -427,7 +427,7 @@ a653sched_alloc_udata(const struct scheduler *ops, struct sched_unit *unit,
* will mark the UNIT awake.
*/
svc->unit = unit;
- svc->awake = 0;
+ svc->awake = false;
if ( !is_idle_unit(unit) )
list_add(&svc->list, &SCHED_PRIV(ops)->unit_list);
update_schedule_units(ops);
@@ -473,7 +473,7 @@ static void
a653sched_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
{
if ( AUNIT(unit) != NULL )
- AUNIT(unit)->awake = 0;
+ AUNIT(unit)->awake = false;
/*
* If the UNIT being put to sleep is the same one that is currently
@@ -493,7 +493,7 @@ static void
a653sched_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
if ( AUNIT(unit) != NULL )
- AUNIT(unit)->awake = 1;
+ AUNIT(unit)->awake = true;
cpu_raise_softirq(sched_unit_master(unit), SCHEDULE_SOFTIRQ);
}
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index 8b1de9b033..05930261d9 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -245,7 +245,7 @@ __runq_elem(struct list_head *elem)
}
/* Is the first element of cpu's runq (if any) cpu's idle unit? */
-static inline bool_t is_runq_idle(unsigned int cpu)
+static inline bool is_runq_idle(unsigned int cpu)
{
/*
* We're peeking at cpu's runq, we must hold the proper lock.
@@ -344,7 +344,7 @@ static void burn_credits(struct csched_unit *svc, s_time_t now)
svc->start_time += (credits * MILLISECS(1)) / CSCHED_CREDITS_PER_MSEC;
}
-static bool_t __read_mostly opt_tickle_one_idle = 1;
+static bool __read_mostly opt_tickle_one_idle = true;
boolean_param("tickle_one_idle_cpu", opt_tickle_one_idle);
DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
@@ -719,7 +719,7 @@ __csched_unit_is_migrateable(const struct csched_private *prv,
static int
_csched_cpu_pick(const struct scheduler *ops, const struct sched_unit *unit,
- bool_t commit)
+ bool commit)
{
int cpu = sched_unit_master(unit);
/* We must always use cpu's scratch space */
@@ -871,7 +871,7 @@ csched_res_pick(const struct scheduler *ops, const struct sched_unit *unit)
* get boosted, which we don't deserve as we are "only" migrating.
*/
set_bit(CSCHED_FLAG_UNIT_MIGRATING, &svc->flags);
- return get_sched_res(_csched_cpu_pick(ops, unit, 1));
+ return get_sched_res(_csched_cpu_pick(ops, unit, true));
}
static inline void
@@ -975,7 +975,7 @@ csched_unit_acct(struct csched_private *prv, unsigned int cpu)
* migrating it to run elsewhere (see multi-core and multi-thread
* support in csched_res_pick()).
*/
- new_cpu = _csched_cpu_pick(ops, currunit, 0);
+ new_cpu = _csched_cpu_pick(ops, currunit, false);
unit_schedule_unlock_irqrestore(lock, flags, currunit);
@@ -1108,7 +1108,7 @@ static void
csched_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
- bool_t migrating;
+ bool migrating;
BUG_ON( is_idle_unit(unit) );
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 264a753116..8646d77343 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -490,10 +490,10 @@ rt_update_deadline(s_time_t now, struct rt_unit *svc)
static inline bool
deadline_queue_remove(struct list_head *queue, struct list_head *elem)
{
- int pos = 0;
+ bool pos = false;
if ( queue->next != elem )
- pos = 1;
+ pos = true;
list_del_init(elem);
return !pos;
@@ -505,14 +505,14 @@ deadline_queue_insert(struct rt_unit * (*qelem)(struct list_head *),
struct list_head *queue)
{
struct list_head *iter;
- int pos = 0;
+ bool pos = false;
list_for_each ( iter, queue )
{
struct rt_unit * iter_svc = (*qelem)(iter);
if ( compare_unit_priority(svc, iter_svc) > 0 )
break;
- pos++;
+ pos = true;
}
list_add_tail(elem, iter);
return !pos;
@@ -605,7 +605,7 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
struct list_head *replq = rt_replq(ops);
struct rt_unit *rearm_svc = svc;
- bool_t rearm = 0;
+ bool rearm = false;
ASSERT( unit_on_replq(svc) );
@@ -622,7 +622,7 @@ replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
deadline_replq_insert(svc, &svc->replq_elem, replq);
rearm_svc = replq_elem(replq->next);
- rearm = 1;
+ rearm = true;
}
else
rearm = deadline_replq_insert(svc, &svc->replq_elem, replq);
@@ -1279,7 +1279,7 @@ rt_unit_wake(const struct scheduler *ops, struct sched_unit *unit)
{
struct rt_unit * const svc = rt_unit(unit);
s_time_t now;
- bool_t missed;
+ bool missed;
BUG_ON( is_idle_unit(unit) );
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index db8ce146ca..3307e88b6c 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -53,7 +53,7 @@ string_param("sched", opt_sched);
* scheduler will give preferrence to partially idle package compared to
* the full idle package, when picking pCPU to schedule vCPU.
*/
-bool_t sched_smt_power_savings = 0;
+bool sched_smt_power_savings;
boolean_param("sched_smt_power_savings", sched_smt_power_savings);
/* Default scheduling rate limit: 1ms
@@ -574,7 +574,7 @@ int sched_init_vcpu(struct vcpu *v)
{
get_sched_res(v->processor)->curr = unit;
get_sched_res(v->processor)->sched_unit_idle = unit;
- v->is_running = 1;
+ v->is_running = true;
unit->is_running = true;
unit->state_entry_time = NOW();
}
@@ -983,7 +983,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
unsigned long flags;
unsigned int old_cpu, new_cpu;
spinlock_t *old_lock, *new_lock;
- bool_t pick_called = 0;
+ bool pick_called = false;
struct vcpu *v;
/*
@@ -1029,7 +1029,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
if ( (new_lock == get_sched_res(new_cpu)->schedule_lock) &&
cpumask_test_cpu(new_cpu, unit->domain->cpupool->cpu_valid) )
break;
- pick_called = 1;
+ pick_called = true;
}
else
{
@@ -1037,7 +1037,7 @@ static void sched_unit_migrate_finish(struct sched_unit *unit)
* We do not hold the scheduler lock appropriate for this vCPU.
* Thus we cannot select a new CPU on this iteration. Try again.
*/
- pick_called = 0;
+ pick_called = false;
}
sched_spin_unlock_double(old_lock, new_lock, flags);
@@ -2148,7 +2148,7 @@ static void sched_switch_units(struct sched_resource *sr,
vcpu_runstate_change(vnext, vnext->new_state, now);
}
- vnext->is_running = 1;
+ vnext->is_running = true;
if ( is_idle_vcpu(vnext) )
vnext->sched_unit = next;
@@ -2219,7 +2219,7 @@ static void vcpu_context_saved(struct vcpu *vprev, struct vcpu *vnext)
smp_wmb();
if ( vprev != vnext )
- vprev->is_running = 0;
+ vprev->is_running = false;
}
static void unit_context_saved(struct sched_resource *sr)
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 55335d6ab3..b2f48a3512 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -557,18 +557,18 @@ static inline bool is_system_domain(const struct domain *d)
* Use this when you don't have an existing reference to @d. It returns
* FALSE if @d is being destroyed.
*/
-static always_inline int get_domain(struct domain *d)
+static always_inline bool get_domain(struct domain *d)
{
int old, seen = atomic_read(&d->refcnt);
do
{
old = seen;
if ( unlikely(old & DOMAIN_DESTROYED) )
- return 0;
+ return false;
seen = atomic_cmpxchg(&d->refcnt, old, old + 1);
}
while ( unlikely(seen != old) );
- return 1;
+ return true;
}
/*
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini
<sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk
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Subject: [PATCH 8/9] xen/sched: eliminate sched_tick_suspend() and sched_tick_resume()
Date: Wed, 18 Dec 2019 08:48:58 +0100
Message-ID: <20191218074859.21665-9-jgross@xxxxxxxx>
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sched_tick_suspend() and sched_tick_resume() only call rcu related
functions, so eliminate them and do the rcu_idle_timer*() calling in
rcu_idle_[enter|exit]().
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/arch/arm/domain.c | 6 +++---
xen/arch/x86/acpi/cpu_idle.c | 15 ++++++++-------
xen/arch/x86/cpu/mwait-idle.c | 8 ++++----
xen/common/rcupdate.c | 7 +++++--
xen/common/sched/schedule.c | 12 ------------
xen/include/xen/rcupdate.h | 3 ---
xen/include/xen/sched.h | 2 --
7 files changed, 20 insertions(+), 33 deletions(-)
diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index c0a13aa0ab..aa3df3b3ba 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -46,8 +46,8 @@ static void do_idle(void)
{
unsigned int cpu = smp_processor_id();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
local_irq_disable();
@@ -58,7 +58,7 @@ static void do_idle(void)
}
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
}
void idle_loop(void)
diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 5edd1844f4..2676f0d7da 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -599,7 +599,8 @@ void update_idle_stats(struct acpi_processor_power *power,
static void acpi_processor_idle(void)
{
- struct acpi_processor_power *power = processor_powers[smp_processor_id()];
+ unsigned int cpu = smp_processor_id();
+ struct acpi_processor_power *power = processor_powers[cpu];
struct acpi_processor_cx *cx = NULL;
int next_state;
uint64_t t1, t2 = 0;
@@ -648,8 +649,8 @@ static void acpi_processor_idle(void)
cpufreq_dbs_timer_suspend();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
/*
@@ -658,10 +659,10 @@ static void acpi_processor_idle(void)
*/
local_irq_disable();
- if ( !cpu_is_haltable(smp_processor_id()) )
+ if ( !cpu_is_haltable(cpu) )
{
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -786,7 +787,7 @@ static void acpi_processor_idle(void)
/* Now in C0 */
power->last_state = &power->states[0];
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -794,7 +795,7 @@ static void acpi_processor_idle(void)
/* Now in C0 */
power->last_state = &power->states[0];
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
if ( cpuidle_current_governor->reflect )
diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c
index 52413e6da1..f49b04c45b 100644
--- a/xen/arch/x86/cpu/mwait-idle.c
+++ b/xen/arch/x86/cpu/mwait-idle.c
@@ -755,8 +755,8 @@ static void mwait_idle(void)
cpufreq_dbs_timer_suspend();
- sched_tick_suspend();
- /* sched_tick_suspend() can raise TIMER_SOFTIRQ. Process it now. */
+ rcu_idle_enter(cpu);
+ /* rcu_idle_enter() can raise TIMER_SOFTIRQ. Process it now. */
process_pending_softirqs();
/* Interrupts must be disabled for C2 and higher transitions. */
@@ -764,7 +764,7 @@ static void mwait_idle(void)
if (!cpu_is_haltable(cpu)) {
local_irq_enable();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
return;
}
@@ -806,7 +806,7 @@ static void mwait_idle(void)
if (!(lapic_timer_reliable_states & (1 << cstate)))
lapic_timer_on();
- sched_tick_resume();
+ rcu_idle_exit(cpu);
cpufreq_dbs_timer_resume();
if ( cpuidle_current_governor->reflect )
diff --git a/xen/common/rcupdate.c b/xen/common/rcupdate.c
index a56103c6f7..cb712c8690 100644
--- a/xen/common/rcupdate.c
+++ b/xen/common/rcupdate.c
@@ -459,7 +459,7 @@ int rcu_needs_cpu(int cpu)
* periodically poke rcu_pedning(), so that it will invoke the callback
* not too late after the end of the grace period.
*/
-void rcu_idle_timer_start()
+static void rcu_idle_timer_start(void)
{
struct rcu_data *rdp = &this_cpu(rcu_data);
@@ -475,7 +475,7 @@ void rcu_idle_timer_start()
rdp->idle_timer_active = true;
}
-void rcu_idle_timer_stop()
+static void rcu_idle_timer_stop(void)
{
struct rcu_data *rdp = &this_cpu(rcu_data);
@@ -633,10 +633,13 @@ void rcu_idle_enter(unsigned int cpu)
* Se the comment before cpumask_andnot() in rcu_start_batch().
*/
smp_mb();
+
+ rcu_idle_timer_start();
}
void rcu_idle_exit(unsigned int cpu)
{
+ rcu_idle_timer_stop();
ASSERT(cpumask_test_cpu(cpu, &rcu_ctrlblk.idle_cpumask));
cpumask_clear_cpu(cpu, &rcu_ctrlblk.idle_cpumask);
}
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index 3307e88b6c..ddbface969 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -3265,18 +3265,6 @@ void schedule_dump(struct cpupool *c)
rcu_read_unlock(&sched_res_rculock);
}
-void sched_tick_suspend(void)
-{
- rcu_idle_enter(smp_processor_id());
- rcu_idle_timer_start();
-}
-
-void sched_tick_resume(void)
-{
- rcu_idle_timer_stop();
- rcu_idle_exit(smp_processor_id());
-}
-
void wait(void)
{
schedule();
diff --git a/xen/include/xen/rcupdate.h b/xen/include/xen/rcupdate.h
index 13850865ed..174d058113 100644
--- a/xen/include/xen/rcupdate.h
+++ b/xen/include/xen/rcupdate.h
@@ -148,7 +148,4 @@ int rcu_barrier(void);
void rcu_idle_enter(unsigned int cpu);
void rcu_idle_exit(unsigned int cpu);
-void rcu_idle_timer_start(void);
-void rcu_idle_timer_stop(void);
-
#endif /* __XEN_RCUPDATE_H */
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index b2f48a3512..e4263de2d5 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -688,8 +688,6 @@ void sched_destroy_domain(struct domain *d);
long sched_adjust(struct domain *, struct xen_domctl_scheduler_op *);
long sched_adjust_global(struct xen_sysctl_scheduler_op *);
int sched_id(void);
-void sched_tick_suspend(void);
-void sched_tick_resume(void);
void vcpu_wake(struct vcpu *v);
long vcpu_yield(void);
void vcpu_sleep_nosync(struct vcpu *v);
--
2.16.4
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From: Juergen Gross <jgross@xxxxxxxx>
To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
CC: Juergen Gross <jgross@xxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>,
George Dunlap <george.dunlap@xxxxxxxxxxxxx>, Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, "Jan
Beulich" <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Konrad
Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>, Stefano Stabellini
<sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Josh Whitehead
<josh.whitehead@xxxxxxxxxxxxxxx>, Stewart Hildebrand
<stewart.hildebrand@xxxxxxxxxxxxxxx>, Meng Xu <mengxu@xxxxxxxxxxxxx>
Subject: [PATCH 9/9] xen/sched: add const qualifier where appropriate
Date: Wed, 18 Dec 2019 08:48:59 +0100
Message-ID: <20191218074859.21665-10-jgross@xxxxxxxx>
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Make use of the const qualifier more often in scheduling code.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
xen/common/sched/cpupool.c | 2 +-
xen/common/sched/sched_arinc653.c | 4 +--
xen/common/sched/sched_credit.c | 44 +++++++++++++++++----------------
xen/common/sched/sched_credit2.c | 52 ++++++++++++++++++++-------------------
xen/common/sched/sched_null.c | 17 +++++++------
xen/common/sched/sched_rt.c | 32 ++++++++++++------------
xen/common/sched/schedule.c | 25 ++++++++++---------
xen/include/xen/sched.h | 9 ++++---
8 files changed, 96 insertions(+), 89 deletions(-)
diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index 14212bb4ae..a6c04c46cb 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -882,7 +882,7 @@ int cpupool_get_id(const struct domain *d)
return d->cpupool ? d->cpupool->cpupool_id : CPUPOOLID_NONE;
}
-cpumask_t *cpupool_valid_cpus(struct cpupool *pool)
+const cpumask_t *cpupool_valid_cpus(const struct cpupool *pool)
{
return pool->cpu_valid;
}
diff --git a/xen/common/sched/sched_arinc653.c b/xen/common/sched/sched_arinc653.c
index dc45378952..0de4ba6b2c 100644
--- a/xen/common/sched/sched_arinc653.c
+++ b/xen/common/sched/sched_arinc653.c
@@ -608,7 +608,7 @@ static struct sched_resource *
a653sched_pick_resource(const struct scheduler *ops,
const struct sched_unit *unit)
{
- cpumask_t *online;
+ const cpumask_t *online;
unsigned int cpu;
/*
@@ -639,7 +639,7 @@ a653_switch_sched(struct scheduler *new_ops, unsigned int cpu,
void *pdata, void *vdata)
{
struct sched_resource *sr = get_sched_res(cpu);
- arinc653_unit_t *svc = vdata;
+ const arinc653_unit_t *svc = vdata;
ASSERT(!pdata && svc && is_idle_unit(svc->unit));
diff --git a/xen/common/sched/sched_credit.c b/xen/common/sched/sched_credit.c
index 05930261d9..f2fc1cca5a 100644
--- a/xen/common/sched/sched_credit.c
+++ b/xen/common/sched/sched_credit.c
@@ -233,7 +233,7 @@ static void csched_tick(void *_cpu);
static void csched_acct(void *dummy);
static inline int
-__unit_on_runq(struct csched_unit *svc)
+__unit_on_runq(const struct csched_unit *svc)
{
return !list_empty(&svc->runq_elem);
}
@@ -349,11 +349,11 @@ boolean_param("tickle_one_idle_cpu", opt_tickle_one_idle);
DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
-static inline void __runq_tickle(struct csched_unit *new)
+static inline void __runq_tickle(const struct csched_unit *new)
{
unsigned int cpu = sched_unit_master(new->unit);
- struct sched_resource *sr = get_sched_res(cpu);
- struct sched_unit *unit = new->unit;
+ const struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_unit *unit = new->unit;
struct csched_unit * const cur = CSCHED_UNIT(curr_on_cpu(cpu));
struct csched_private *prv = CSCHED_PRIV(sr->scheduler);
cpumask_t mask, idle_mask, *online;
@@ -509,7 +509,7 @@ static inline void __runq_tickle(struct csched_unit *new)
static void
csched_free_pdata(const struct scheduler *ops, void *pcpu, int cpu)
{
- struct csched_private *prv = CSCHED_PRIV(ops);
+ const struct csched_private *prv = CSCHED_PRIV(ops);
/*
* pcpu either points to a valid struct csched_pcpu, or is NULL, if we're
@@ -652,7 +652,7 @@ csched_switch_sched(struct scheduler *new_ops, unsigned int cpu,
#ifndef NDEBUG
static inline void
-__csched_unit_check(struct sched_unit *unit)
+__csched_unit_check(const struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
struct csched_dom * const sdom = svc->sdom;
@@ -700,8 +700,8 @@ __csched_vcpu_is_cache_hot(const struct csched_private *prv,
static inline int
__csched_unit_is_migrateable(const struct csched_private *prv,
- struct sched_unit *unit,
- int dest_cpu, cpumask_t *mask)
+ const struct sched_unit *unit,
+ int dest_cpu, const cpumask_t *mask)
{
const struct csched_unit *svc = CSCHED_UNIT(unit);
/*
@@ -725,7 +725,7 @@ _csched_cpu_pick(const struct scheduler *ops, const struct sched_unit *unit,
/* We must always use cpu's scratch space */
cpumask_t *cpus = cpumask_scratch_cpu(cpu);
cpumask_t idlers;
- cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
+ const cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
struct csched_pcpu *spc = NULL;
int balance_step;
@@ -932,7 +932,7 @@ csched_unit_acct(struct csched_private *prv, unsigned int cpu)
{
struct sched_unit *currunit = current->sched_unit;
struct csched_unit * const svc = CSCHED_UNIT(currunit);
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
const struct scheduler *ops = sr->scheduler;
ASSERT( sched_unit_master(currunit) == cpu );
@@ -1084,7 +1084,7 @@ csched_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
{
struct csched_unit * const svc = CSCHED_UNIT(unit);
unsigned int cpu = sched_unit_master(unit);
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
SCHED_STAT_CRANK(unit_sleep);
@@ -1577,7 +1577,7 @@ static void
csched_tick(void *_cpu)
{
unsigned int cpu = (unsigned long)_cpu;
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
struct csched_pcpu *spc = CSCHED_PCPU(cpu);
struct csched_private *prv = CSCHED_PRIV(sr->scheduler);
@@ -1604,7 +1604,7 @@ csched_tick(void *_cpu)
static struct csched_unit *
csched_runq_steal(int peer_cpu, int cpu, int pri, int balance_step)
{
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
const struct csched_private * const prv = CSCHED_PRIV(sr->scheduler);
const struct csched_pcpu * const peer_pcpu = CSCHED_PCPU(peer_cpu);
struct csched_unit *speer;
@@ -1681,10 +1681,10 @@ static struct csched_unit *
csched_load_balance(struct csched_private *prv, int cpu,
struct csched_unit *snext, bool *stolen)
{
- struct cpupool *c = get_sched_res(cpu)->cpupool;
+ const struct cpupool *c = get_sched_res(cpu)->cpupool;
struct csched_unit *speer;
cpumask_t workers;
- cpumask_t *online = c->res_valid;
+ const cpumask_t *online = c->res_valid;
int peer_cpu, first_cpu, peer_node, bstep;
int node = cpu_to_node(cpu);
@@ -2008,7 +2008,7 @@ out:
}
static void
-csched_dump_unit(struct csched_unit *svc)
+csched_dump_unit(const struct csched_unit *svc)
{
struct csched_dom * const sdom = svc->sdom;
@@ -2041,10 +2041,11 @@ csched_dump_unit(struct csched_unit *svc)
static void
csched_dump_pcpu(const struct scheduler *ops, int cpu)
{
- struct list_head *runq, *iter;
+ const struct list_head *runq;
+ struct list_head *iter;
struct csched_private *prv = CSCHED_PRIV(ops);
- struct csched_pcpu *spc;
- struct csched_unit *svc;
+ const struct csched_pcpu *spc;
+ const struct csched_unit *svc;
spinlock_t *lock;
unsigned long flags;
int loop;
@@ -2132,12 +2133,13 @@ csched_dump(const struct scheduler *ops)
loop = 0;
list_for_each( iter_sdom, &prv->active_sdom )
{
- struct csched_dom *sdom;
+ const struct csched_dom *sdom;
+
sdom = list_entry(iter_sdom, struct csched_dom, active_sdom_elem);
list_for_each( iter_svc, &sdom->active_unit )
{
- struct csched_unit *svc;
+ const struct csched_unit *svc;
spinlock_t *lock;
svc = list_entry(iter_svc, struct csched_unit, active_unit_elem);
diff --git a/xen/common/sched/sched_credit2.c b/xen/common/sched/sched_credit2.c
index f9e521a3a8..1ed7bbde2f 100644
--- a/xen/common/sched/sched_credit2.c
+++ b/xen/common/sched/sched_credit2.c
@@ -692,7 +692,7 @@ void smt_idle_mask_clear(unsigned int cpu, cpumask_t *mask)
*/
static int get_fallback_cpu(struct csched2_unit *svc)
{
- struct sched_unit *unit = svc->unit;
+ const struct sched_unit *unit = svc->unit;
unsigned int bs;
SCHED_STAT_CRANK(need_fallback_cpu);
@@ -774,7 +774,7 @@ static int get_fallback_cpu(struct csched2_unit *svc)
*
* FIXME: Do pre-calculated division?
*/
-static void t2c_update(struct csched2_runqueue_data *rqd, s_time_t time,
+static void t2c_update(const struct csched2_runqueue_data *rqd, s_time_t time,
struct csched2_unit *svc)
{
uint64_t val = time * rqd->max_weight + svc->residual;
@@ -783,7 +783,8 @@ static void t2c_update(struct csched2_runqueue_data *rqd, s_time_t time,
svc->credit -= val;
}
-static s_time_t c2t(struct csched2_runqueue_data *rqd, s_time_t credit, struct csched2_unit *svc)
+static s_time_t c2t(const struct csched2_runqueue_data *rqd, s_time_t credit,
+ const struct csched2_unit *svc)
{
return credit * svc->weight / rqd->max_weight;
}
@@ -792,7 +793,7 @@ static s_time_t c2t(struct csched2_runqueue_data *rqd, s_time_t credit, struct c
* Runqueue related code.
*/
-static inline int unit_on_runq(struct csched2_unit *svc)
+static inline int unit_on_runq(const struct csched2_unit *svc)
{
return !list_empty(&svc->runq_elem);
}
@@ -849,9 +850,9 @@ static inline bool same_core(unsigned int cpua, unsigned int cpub)
}
static unsigned int
-cpu_to_runqueue(struct csched2_private *prv, unsigned int cpu)
+cpu_to_runqueue(const struct csched2_private *prv, unsigned int cpu)
{
- struct csched2_runqueue_data *rqd;
+ const struct csched2_runqueue_data *rqd;
unsigned int rqi;
for ( rqi = 0; rqi < nr_cpu_ids; rqi++ )
@@ -917,7 +918,7 @@ static void update_max_weight(struct csched2_runqueue_data *rqd, int new_weight,
list_for_each( iter, &rqd->svc )
{
- struct csched2_unit * svc = list_entry(iter, struct csched2_unit, rqd_elem);
+ const struct csched2_unit * svc = list_entry(iter, struct csched2_unit, rqd_elem);
if ( svc->weight > max_weight )
max_weight = svc->weight;
@@ -970,7 +971,7 @@ _runq_assign(struct csched2_unit *svc, struct csched2_runqueue_data *rqd)
}
static void
-runq_assign(const struct scheduler *ops, struct sched_unit *unit)
+runq_assign(const struct scheduler *ops, const struct sched_unit *unit)
{
struct csched2_unit *svc = unit->priv;
@@ -997,7 +998,7 @@ _runq_deassign(struct csched2_unit *svc)
}
static void
-runq_deassign(const struct scheduler *ops, struct sched_unit *unit)
+runq_deassign(const struct scheduler *ops, const struct sched_unit *unit)
{
struct csched2_unit *svc = unit->priv;
@@ -1203,7 +1204,7 @@ static void
update_svc_load(const struct scheduler *ops,
struct csched2_unit *svc, int change, s_time_t now)
{
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
s_time_t delta, unit_load;
unsigned int P, W;
@@ -1362,11 +1363,11 @@ static inline bool is_preemptable(const struct csched2_unit *svc,
* Within the same class, the highest difference of credit.
*/
static s_time_t tickle_score(const struct scheduler *ops, s_time_t now,
- struct csched2_unit *new, unsigned int cpu)
+ const struct csched2_unit *new, unsigned int cpu)
{
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
struct csched2_unit * cur = csched2_unit(curr_on_cpu(cpu));
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
s_time_t score;
/*
@@ -1441,7 +1442,7 @@ runq_tickle(const struct scheduler *ops, struct csched2_unit *new, s_time_t now)
struct sched_unit *unit = new->unit;
unsigned int bs, cpu = sched_unit_master(unit);
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
- cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
+ const cpumask_t *online = cpupool_domain_master_cpumask(unit->domain);
cpumask_t mask;
ASSERT(new->rqd == rqd);
@@ -2005,7 +2006,7 @@ static void replenish_domain_budget(void* data)
#ifndef NDEBUG
static inline void
-csched2_unit_check(struct sched_unit *unit)
+csched2_unit_check(const struct sched_unit *unit)
{
struct csched2_unit * const svc = csched2_unit(unit);
struct csched2_dom * const sdom = svc->sdom;
@@ -2541,8 +2542,8 @@ static void migrate(const struct scheduler *ops,
* - svc is not already flagged to migrate,
* - if svc is allowed to run on at least one of the pcpus of rqd.
*/
-static bool unit_is_migrateable(struct csched2_unit *svc,
- struct csched2_runqueue_data *rqd)
+static bool unit_is_migrateable(const struct csched2_unit *svc,
+ const struct csched2_runqueue_data *rqd)
{
struct sched_unit *unit = svc->unit;
int cpu = sched_unit_master(unit);
@@ -3076,7 +3077,7 @@ csched2_free_domdata(const struct scheduler *ops, void *data)
static void
csched2_unit_insert(const struct scheduler *ops, struct sched_unit *unit)
{
- struct csched2_unit *svc = unit->priv;
+ const struct csched2_unit *svc = unit->priv;
struct csched2_dom * const sdom = svc->sdom;
spinlock_t *lock;
@@ -3142,7 +3143,7 @@ csched2_runtime(const struct scheduler *ops, int cpu,
int rt_credit; /* Proposed runtime measured in credits */
struct csched2_runqueue_data *rqd = c2rqd(ops, cpu);
struct list_head *runq = &rqd->runq;
- struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_private *prv = csched2_priv(ops);
/*
* If we're idle, just stay so. Others (or external events)
@@ -3239,7 +3240,7 @@ runq_candidate(struct csched2_runqueue_data *rqd,
unsigned int *skipped)
{
struct list_head *iter, *temp;
- struct sched_resource *sr = get_sched_res(cpu);
+ const struct sched_resource *sr = get_sched_res(cpu);
struct csched2_unit *snext = NULL;
struct csched2_private *prv = csched2_priv(sr->scheduler);
bool yield = false, soft_aff_preempt = false;
@@ -3603,7 +3604,8 @@ static void csched2_schedule(
}
static void
-csched2_dump_unit(struct csched2_private *prv, struct csched2_unit *svc)
+csched2_dump_unit(const struct csched2_private *prv,
+ const struct csched2_unit *svc)
{
printk("[%i.%i] flags=%x cpu=%i",
svc->unit->domain->domain_id,
@@ -3626,8 +3628,8 @@ csched2_dump_unit(struct csched2_private *prv, struct csched2_unit *svc)
static inline void
dump_pcpu(const struct scheduler *ops, int cpu)
{
- struct csched2_private *prv = csched2_priv(ops);
- struct csched2_unit *svc;
+ const struct csched2_private *prv = csched2_priv(ops);
+ const struct csched2_unit *svc;
printk("CPU[%02d] runq=%d, sibling={%*pbl}, core={%*pbl}\n",
cpu, c2r(cpu),
@@ -3695,8 +3697,8 @@ csched2_dump(const struct scheduler *ops)
loop = 0;
list_for_each( iter_sdom, &prv->sdom )
{
- struct csched2_dom *sdom;
- struct sched_unit *unit;
+ const struct csched2_dom *sdom;
+ const struct sched_unit *unit;
sdom = list_entry(iter_sdom, struct csched2_dom, sdom_elem);
@@ -3737,7 +3739,7 @@ csched2_dump(const struct scheduler *ops)
printk("RUNQ:\n");
list_for_each( iter, runq )
{
- struct csched2_unit *svc = runq_elem(iter);
+ const struct csched2_unit *svc = runq_elem(iter);
if ( svc )
{
diff --git a/xen/common/sched/sched_null.c b/xen/common/sched/sched_null.c
index 11aab25743..4906e02c62 100644
--- a/xen/common/sched/sched_null.c
+++ b/xen/common/sched/sched_null.c
@@ -278,12 +278,12 @@ static void null_free_domdata(const struct scheduler *ops, void *data)
* So this is not part of any hot path.
*/
static struct sched_resource *
-pick_res(struct null_private *prv, const struct sched_unit *unit)
+pick_res(const struct null_private *prv, const struct sched_unit *unit)
{
unsigned int bs;
unsigned int cpu = sched_unit_master(unit), new_cpu;
- cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
- struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+ const cpumask_t *cpus = cpupool_domain_master_cpumask(unit->domain);
+ const struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
ASSERT(spin_is_locked(get_sched_res(cpu)->schedule_lock));
@@ -375,7 +375,7 @@ static void unit_assign(struct null_private *prv, struct sched_unit *unit,
}
/* Returns true if a cpu was tickled */
-static bool unit_deassign(struct null_private *prv, struct sched_unit *unit)
+static bool unit_deassign(struct null_private *prv, const struct sched_unit *unit)
{
unsigned int bs;
unsigned int cpu = sched_unit_master(unit);
@@ -441,7 +441,7 @@ static spinlock_t *null_switch_sched(struct scheduler *new_ops,
{
struct sched_resource *sr = get_sched_res(cpu);
struct null_private *prv = null_priv(new_ops);
- struct null_unit *nvc = vdata;
+ const struct null_unit *nvc = vdata;
ASSERT(nvc && is_idle_unit(nvc->unit));
@@ -940,7 +940,8 @@ static void null_schedule(const struct scheduler *ops, struct sched_unit *prev,
prev->next_task->migrated = false;
}
-static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
+static inline void dump_unit(const struct null_private *prv,
+ const struct null_unit *nvc)
{
printk("[%i.%i] pcpu=%d", nvc->unit->domain->domain_id,
nvc->unit->unit_id, list_empty(&nvc->waitq_elem) ?
@@ -950,8 +951,8 @@ static inline void dump_unit(struct null_private *prv, struct null_unit *nvc)
static void null_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct null_private *prv = null_priv(ops);
- struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
- struct null_unit *nvc;
+ const struct null_pcpu *npc = get_sched_res(cpu)->sched_priv;
+ const struct null_unit *nvc;
spinlock_t *lock;
unsigned long flags;
diff --git a/xen/common/sched/sched_rt.c b/xen/common/sched/sched_rt.c
index 8646d77343..560614ed9d 100644
--- a/xen/common/sched/sched_rt.c
+++ b/xen/common/sched/sched_rt.c
@@ -352,7 +352,7 @@ static void
rt_dump_pcpu(const struct scheduler *ops, int cpu)
{
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *svc;
+ const struct rt_unit *svc;
unsigned long flags;
spin_lock_irqsave(&prv->lock, flags);
@@ -371,8 +371,8 @@ rt_dump(const struct scheduler *ops)
{
struct list_head *runq, *depletedq, *replq, *iter;
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *svc;
- struct rt_dom *sdom;
+ const struct rt_unit *svc;
+ const struct rt_dom *sdom;
unsigned long flags;
spin_lock_irqsave(&prv->lock, flags);
@@ -408,7 +408,7 @@ rt_dump(const struct scheduler *ops)
printk("Domain info:\n");
list_for_each ( iter, &prv->sdom )
{
- struct sched_unit *unit;
+ const struct sched_unit *unit;
sdom = list_entry(iter, struct rt_dom, sdom_elem);
printk("\tdomain: %d\n", sdom->dom->domain_id);
@@ -509,7 +509,7 @@ deadline_queue_insert(struct rt_unit * (*qelem)(struct list_head *),
list_for_each ( iter, queue )
{
- struct rt_unit * iter_svc = (*qelem)(iter);
+ const struct rt_unit * iter_svc = (*qelem)(iter);
if ( compare_unit_priority(svc, iter_svc) > 0 )
break;
pos = true;
@@ -547,7 +547,7 @@ replq_remove(const struct scheduler *ops, struct rt_unit *svc)
*/
if ( !list_empty(replq) )
{
- struct rt_unit *svc_next = replq_elem(replq->next);
+ const struct rt_unit *svc_next = replq_elem(replq->next);
set_timer(&prv->repl_timer, svc_next->cur_deadline);
}
else
@@ -604,7 +604,7 @@ static void
replq_reinsert(const struct scheduler *ops, struct rt_unit *svc)
{
struct list_head *replq = rt_replq(ops);
- struct rt_unit *rearm_svc = svc;
+ const struct rt_unit *rearm_svc = svc;
bool rearm = false;
ASSERT( unit_on_replq(svc) );
@@ -640,7 +640,7 @@ static struct sched_resource *
rt_res_pick_locked(const struct sched_unit *unit, unsigned int locked_cpu)
{
cpumask_t *cpus = cpumask_scratch_cpu(locked_cpu);
- cpumask_t *online;
+ const cpumask_t *online;
int cpu;
online = cpupool_domain_master_cpumask(unit->domain);
@@ -1028,7 +1028,7 @@ runq_pick(const struct scheduler *ops, const cpumask_t *mask, unsigned int cpu)
struct rt_unit *svc = NULL;
struct rt_unit *iter_svc = NULL;
cpumask_t *cpu_common = cpumask_scratch_cpu(cpu);
- cpumask_t *online;
+ const cpumask_t *online;
list_for_each ( iter, runq )
{
@@ -1197,15 +1197,15 @@ rt_unit_sleep(const struct scheduler *ops, struct sched_unit *unit)
* lock is grabbed before calling this function
*/
static void
-runq_tickle(const struct scheduler *ops, struct rt_unit *new)
+runq_tickle(const struct scheduler *ops, const struct rt_unit *new)
{
struct rt_private *prv = rt_priv(ops);
- struct rt_unit *latest_deadline_unit = NULL; /* lowest priority */
- struct rt_unit *iter_svc;
- struct sched_unit *iter_unit;
+ const struct rt_unit *latest_deadline_unit = NULL; /* lowest priority */
+ const struct rt_unit *iter_svc;
+ const struct sched_unit *iter_unit;
int cpu = 0, cpu_to_tickle = 0;
cpumask_t *not_tickled = cpumask_scratch_cpu(smp_processor_id());
- cpumask_t *online;
+ const cpumask_t *online;
if ( new == NULL || is_idle_unit(new->unit) )
return;
@@ -1379,7 +1379,7 @@ rt_dom_cntl(
{
struct rt_private *prv = rt_priv(ops);
struct rt_unit *svc;
- struct sched_unit *unit;
+ const struct sched_unit *unit;
unsigned long flags;
int rc = 0;
struct xen_domctl_schedparam_vcpu local_sched;
@@ -1484,7 +1484,7 @@ rt_dom_cntl(
*/
static void repl_timer_handler(void *data){
s_time_t now;
- struct scheduler *ops = data;
+ const struct scheduler *ops = data;
struct rt_private *prv = rt_priv(ops);
struct list_head *replq = rt_replq(ops);
struct list_head *runq = rt_runq(ops);
diff --git a/xen/common/sched/schedule.c b/xen/common/sched/schedule.c
index ddbface969..1d98e1fa8d 100644
--- a/xen/common/sched/schedule.c
+++ b/xen/common/sched/schedule.c
@@ -175,7 +175,7 @@ static inline struct scheduler *dom_scheduler(const struct domain *d)
static inline struct scheduler *unit_scheduler(const struct sched_unit *unit)
{
- struct domain *d = unit->domain;
+ const struct domain *d = unit->domain;
if ( likely(d->cpupool != NULL) )
return d->cpupool->sched;
@@ -202,7 +202,7 @@ static inline struct scheduler *vcpu_scheduler(const struct vcpu *v)
}
#define VCPU2ONLINE(_v) cpupool_domain_master_cpumask((_v)->domain)
-static inline void trace_runstate_change(struct vcpu *v, int new_state)
+static inline void trace_runstate_change(const struct vcpu *v, int new_state)
{
struct { uint32_t vcpu:16, domain:16; } d;
uint32_t event;
@@ -220,7 +220,7 @@ static inline void trace_runstate_change(struct vcpu *v, int new_state)
__trace_var(event, 1/*tsc*/, sizeof(d), &d);
}
-static inline void trace_continue_running(struct vcpu *v)
+static inline void trace_continue_running(const struct vcpu *v)
{
struct { uint32_t vcpu:16, domain:16; } d;
@@ -302,7 +302,8 @@ void sched_guest_idle(void (*idle) (void), unsigned int cpu)
atomic_dec(&per_cpu(sched_urgent_count, cpu));
}
-void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate)
+void vcpu_runstate_get(const struct vcpu *v,
+ struct vcpu_runstate_info *runstate)
{
spinlock_t *lock;
s_time_t delta;
@@ -324,7 +325,7 @@ void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate)
uint64_t get_cpu_idle_time(unsigned int cpu)
{
struct vcpu_runstate_info state = { 0 };
- struct vcpu *v = idle_vcpu[cpu];
+ const struct vcpu *v = idle_vcpu[cpu];
if ( cpu_online(cpu) && v )
vcpu_runstate_get(v, &state);
@@ -392,7 +393,7 @@ static void sched_free_unit_mem(struct sched_unit *unit)
static void sched_free_unit(struct sched_unit *unit, struct vcpu *v)
{
- struct vcpu *vunit;
+ const struct vcpu *vunit;
unsigned int cnt = 0;
/* Don't count to be released vcpu, might be not in vcpu list yet. */
@@ -522,7 +523,7 @@ static unsigned int sched_select_initial_cpu(const struct vcpu *v)
int sched_init_vcpu(struct vcpu *v)
{
- struct domain *d = v->domain;
+ const struct domain *d = v->domain;
struct sched_unit *unit;
unsigned int processor;
@@ -913,7 +914,7 @@ static void sched_unit_move_locked(struct sched_unit *unit,
unsigned int new_cpu)
{
unsigned int old_cpu = unit->res->master_cpu;
- struct vcpu *v;
+ const struct vcpu *v;
rcu_read_lock(&sched_res_rculock);
@@ -1090,7 +1091,7 @@ static bool sched_check_affinity_broken(const struct sched_unit *unit)
return false;
}
-static void sched_reset_affinity_broken(struct sched_unit *unit)
+static void sched_reset_affinity_broken(const struct sched_unit *unit)
{
struct vcpu *v;
@@ -1176,7 +1177,7 @@ void restore_vcpu_affinity(struct domain *d)
int cpu_disable_scheduler(unsigned int cpu)
{
struct domain *d;
- struct cpupool *c;
+ const struct cpupool *c;
cpumask_t online_affinity;
int ret = 0;
@@ -1251,8 +1252,8 @@ out:
static int cpu_disable_scheduler_check(unsigned int cpu)
{
struct domain *d;
- struct vcpu *v;
- struct cpupool *c;
+ const struct vcpu *v;
+ const struct cpupool *c;
c = get_sched_res(cpu)->cpupool;
if ( c == NULL )
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index e4263de2d5..fcf8e5037b 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -771,7 +771,7 @@ static inline void hypercall_cancel_continuation(struct vcpu *v)
extern struct domain *domain_list;
/* Caller must hold the domlist_read_lock or domlist_update_lock. */
-static inline struct domain *first_domain_in_cpupool( struct cpupool *c)
+static inline struct domain *first_domain_in_cpupool(const struct cpupool *c)
{
struct domain *d;
for (d = rcu_dereference(domain_list); d && d->cpupool != c;
@@ -779,7 +779,7 @@ static inline struct domain *first_domain_in_cpupool( struct cpupool *c)
return d;
}
static inline struct domain *next_domain_in_cpupool(
- struct domain *d, struct cpupool *c)
+ struct domain *d, const struct cpupool *c)
{
for (d = rcu_dereference(d->next_in_list); d && d->cpupool != c;
d = rcu_dereference(d->next_in_list));
@@ -923,7 +923,8 @@ void restore_vcpu_affinity(struct domain *d);
int vcpu_affinity_domctl(struct domain *d, uint32_t cmd,
struct xen_domctl_vcpuaffinity *vcpuaff);
-void vcpu_runstate_get(struct vcpu *v, struct vcpu_runstate_info *runstate);
+void vcpu_runstate_get(const struct vcpu *v,
+ struct vcpu_runstate_info *runstate);
uint64_t get_cpu_idle_time(unsigned int cpu);
void sched_guest_idle(void (*idle) (void), unsigned int cpu);
void scheduler_enable(void);
@@ -1042,7 +1043,7 @@ extern enum cpufreq_controller {
int cpupool_move_domain(struct domain *d, struct cpupool *c);
int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op);
int cpupool_get_id(const struct domain *d);
-cpumask_t *cpupool_valid_cpus(struct cpupool *pool);
+const cpumask_t *cpupool_valid_cpus(const struct cpupool *pool);
extern void dump_runq(unsigned char key);
void arch_do_physinfo(struct xen_sysctl_physinfo *pi);
--
2.16.4
