Am 29.12.2017 um 17:14 schrieb Alan Stern:
On Thu, 28 Dec 2017, Bjorn Helgaas wrote:
On Tue, Dec 26, 2017 at 04:55:20PM +0100, Paul Menzel wrote:
Am 08.04.2017 um 17:41 schrieb Bjorn Helgaas:
On Fri, Apr 07, 2017 at 11:07:15PM +0200, Paul Menzel wrote:
Measuring where time is spent during boot with `systemd-bootchart`
on an Asus A780FullHD, it turns out that half a second is spent in
`pci_apply_final_quirks()`.
I agree, that seems like a crazy amount of time.
Can you figure out how to turn on pr_debug() (via the dynamic debug
mess or whatever) and boot with "initcall_debug"? That should tell us
how long each quirk took.
I am sorry for taking so long to reply. I finally added `dyndbg=file
quirks.c +p` to the command line of Linux 4.13.13. This is on
another AMD system (Asus F285M Pro).
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 197 usecs for
0000:00:10.0
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 127 usecs for
0000:00:10.1
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 88643 usecs for
0000:00:12.0
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 137 usecs for
0000:00:12.2
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
pci_fixup_amd_ehci_pme+0x0/0x30 returned after 1 usecs for
0000:00:12.2
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 85770 usecs for
0000:00:13.0
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 134 usecs for
0000:00:13.2
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
pci_fixup_amd_ehci_pme+0x0/0x30 returned after 1 usecs for
0000:00:13.2
Dez 26 16:21:46 asus-f2a85-pro kernel: pci fixup
quirk_usb_early_handoff+0x0/0x6b0 returned after 125 usecs for
0000:03:00.0[…]
```
So it’s `pci fixup quirk_usb_early_handoff` taking around 85 ms, and
that twice.
Wow. That's pretty painful, but of course I don't know how to fix it.
From looking at quirk_usb_early_handoff(), it may depend on BIOS
details. Maybe the USB folks will have some ideas.
Can we see the output from lspci? It would help to know what the 12.0
and 13.0 devices are.
Sorry, that was trimmed from the original message. Here is the output
from the ASRock A780FullD.
```
$ more /proc/version
Linux version 4.9.0-0.bpo.2-amd64 (debian-kernel@xxxxxxxxxxxxxxxx)
(gcc version 4.9.2 (Debian 4.9.2-10) ) #1 SMP Debian 4.9.13-1~bpo8+1 (2017-02-27)
$ lspci -nn
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] RS780 Host Bridge [1022:9600]
00:01.0 PCI bridge [0604]: ASRock Incorporation Device [1849:9602]
00:09.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 4) [1022:9608]
00:0a.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 5) [1022:9609]
00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] [1002:4391]
00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397]
00:12.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398]
00:12.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396]
00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397]
00:13.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398]
00:13.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396]
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller [1002:4385] (rev 3a)
00:14.1 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller [1002:439c]
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) [1002:4383]
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller [1002:439d]
00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge [1002:4384]
00:14.5 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller [1002:4399]
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration [1022:1100]
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map [1022:1101]
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller [1022:1102]
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control [1022:1103]
01:05.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RS780 [Radeon HD 3200] [1002:9610]
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
[10ec:8168] (rev 02)
```
So far, this can be reproduce on all AMD systems I have (ASRock
A780FullHD, ASRock E350M1, Asus F2A85-M Pro).
Kind regards,
Paul
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