diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-11-23 04:19:20 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-23 04:19:20 -0500 |
| commit | 6e3d8330ae2c4b2c11a9577a0130d2ecda1c610d (patch) | |
| tree | 4d360eaa3e9cefc16081f3853b5fa02996b9caf4 /arch/x86/kernel/cpu/Makefile | |
| parent | bfd451184d80301d1ae970b1ebffde1e9c6240f9 (diff) | |
perf events: Do not generate function trace entries in perf code
Decreases perf overhead when function tracing is enabled,
by about 50%.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/Makefile')
| -rw-r--r-- | arch/x86/kernel/cpu/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 68537e957a9b..1d2cb383410e 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile | |||
| @@ -5,6 +5,7 @@ | |||
| 5 | # Don't trace early stages of a secondary CPU boot | 5 | # Don't trace early stages of a secondary CPU boot |
| 6 | ifdef CONFIG_FUNCTION_TRACER | 6 | ifdef CONFIG_FUNCTION_TRACER |
| 7 | CFLAGS_REMOVE_common.o = -pg | 7 | CFLAGS_REMOVE_common.o = -pg |
| 8 | CFLAGS_REMOVE_perf_event.o = -pg | ||
| 8 | endif | 9 | endif |
| 9 | 10 | ||
| 10 | # Make sure load_percpu_segment has no stackprotector | 11 | # Make sure load_percpu_segment has no stackprotector |