Commit 6e3d8330 authored by Ingo Molnar's avatar Ingo Molnar

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: default avatarIngo Molnar <mingo@elte.hu>
parent bfd45118
...@@ -5,6 +5,7 @@ ...@@ -5,6 +5,7 @@
# Don't trace early stages of a secondary CPU boot # Don't trace early stages of a secondary CPU boot
ifdef CONFIG_FUNCTION_TRACER ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_common.o = -pg CFLAGS_REMOVE_common.o = -pg
CFLAGS_REMOVE_perf_event.o = -pg
endif endif
# Make sure load_percpu_segment has no stackprotector # Make sure load_percpu_segment has no stackprotector
......
...@@ -21,6 +21,7 @@ CFLAGS_REMOVE_mutex-debug.o = -pg ...@@ -21,6 +21,7 @@ CFLAGS_REMOVE_mutex-debug.o = -pg
CFLAGS_REMOVE_rtmutex-debug.o = -pg CFLAGS_REMOVE_rtmutex-debug.o = -pg
CFLAGS_REMOVE_cgroup-debug.o = -pg CFLAGS_REMOVE_cgroup-debug.o = -pg
CFLAGS_REMOVE_sched_clock.o = -pg CFLAGS_REMOVE_sched_clock.o = -pg
CFLAGS_REMOVE_perf_event.o = -pg
endif endif
obj-$(CONFIG_FREEZER) += freezer.o obj-$(CONFIG_FREEZER) += freezer.o
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment