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perf bench mem: Prepare the x86-64 build for upstream memcpy_mcsafe() changes 

The following upcoming upstream commit:

  92b0729c34 ("x86/mm, x86/mce: Add memcpy_mcsafe()")

Adds _ASM_EXTABLE_FAULT(), which is not available in user-space
and breaks the build.

We don't really need _ASM_EXTABLE_FAULT() in user-space, so simply
wrap it to nothing.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2016-03-09 10:40:01 +01:00
parent 7a8698058a
commit 3a99e6db53
1 changed files with 5 additions and 0 deletions
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5
tools/perf/bench/mem-memcpy-x86-64-asm.S
View File

@ -1,6 +1,11 @@
/* Various wrappers to make the kernel .S file build in user-space: */
#define memcpy MEMCPY /* don't hide glibc's memcpy() */
#define altinstr_replacement text
#define globl p2align 4; .globl
#define _ASM_EXTABLE_FAULT(x, y)
#include "../../../arch/x86/lib/memcpy_64.S"
/*
* We need to provide note.GNU-stack section, saying that we want