This is a note to let you know that I've just added the patch titled
turbostat: Don't put unprocessed uapi headers in the include path
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
turbostat-don-t-put-unprocessed-uapi-headers-in-the-include-path.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b731f3119de57144e16c19fd593b8daeb637843e Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Date: Tue, 20 Aug 2013 17:20:12 -0700
Subject: turbostat: Don't put unprocessed uapi headers in the include path
From: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
commit b731f3119de57144e16c19fd593b8daeb637843e upstream.
turbostat's Makefile puts arch/x86/include/uapi/ in the include path, so
that it can include <asm/msr.h> from it. It isn't in general safe to
include even uapi headers directly from the kernel tree without
processing them through scripts/headers_install.sh, but asm/msr.h
happens to work.
However, that include path can break with some versions of system
headers, by overriding some system headers with the unprocessed versions
directly from the kernel source. For instance:
In file included from /build/x86-generic/usr/include/bits/sigcontext.h:28:0,
from /build/x86-generic/usr/include/signal.h:339,
from /build/x86-generic/usr/include/sys/wait.h:31,
from turbostat.c:27:
../../../../arch/x86/include/uapi/asm/sigcontext.h:4:28: fatal error: linux/compiler.h: No such file or directory
This occurs because the system bits/sigcontext.h on that build system
includes <asm/sigcontext.h>, and asm/sigcontext.h in the kernel source
includes <linux/compiler.h>, which scripts/headers_install.sh would have
filtered out.
Since turbostat really only wants a single header, just include that one
header rather than putting an entire directory of kernel headers on the
include path.
In the process, switch from msr.h to msr-index.h, since turbostat just
wants the MSR numbers.
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/power/x86/turbostat/Makefile | 2 +-
tools/power/x86/turbostat/turbostat.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/tools/power/x86/turbostat/Makefile
+++ b/tools/power/x86/turbostat/Makefile
@@ -5,7 +5,7 @@ DESTDIR :=
turbostat : turbostat.c
CFLAGS += -Wall
-CFLAGS += -I../../../../arch/x86/include/uapi/
+CFLAGS += -DMSRHEADER='"../../../../arch/x86/include/uapi/asm/msr-index.h"'
%: %.c
@mkdir -p $(BUILD_OUTPUT)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -20,7 +20,7 @@
*/
#define _GNU_SOURCE
-#include <asm/msr.h>
+#include MSRHEADER
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
Patches currently in stable-queue which might be from josh@xxxxxxxxxxxxxxxx are
queue-3.12/turbostat-use-gcc-s-cpuid-functions-to-support-pic.patch
queue-3.12/turbostat-don-t-put-unprocessed-uapi-headers-in-the-include-path.patch
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