diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2008-04-23 11:38:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-23 11:38:54 +0200 |
| commit | df1297fe9fd0f1cbd8c057278b9fa9fcd4ea0d38 (patch) | |
| tree | f04613fd89ffc2fc104b3cd103ed27f6ffef0e71 /lib | |
| parent | b26a2a60c89315505768aff87ffcb4a9b72541c9 (diff) | |
ftrace: do not profile lib/string.o
Most archs define the string and memory compare functions in assembly.
Some do not. But these functions may be used in some archs at early
boot up.
Since most archs define this code in assembly and they are not usually
traced, there's no need to trace them when they are not defined in
assembly.
This patch removes the -pg from the CFLAGS for lib/string.o.
This prevents the string functions use in either vdso or early bootup
from crashing the system.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile index bf8000fc7d48..26d98104bdc5 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -8,6 +8,14 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ sha1.o irq_regs.o reciprocal_div.o argv_split.o \ proportions.o prio_heap.o +ifdef CONFIG_FTRACE +# Do not profile string.o, since it may be used in early boot or vdso +ORIG_CFLAGS := $(KBUILD_CFLAGS) +KBUILD_CFLAGS = $(if $(subst string,,$(basename $(notdir $@))), \ + $(ORIG_CFLAGS), \ + $(subst -pg,,$(ORIG_CFLAGS))) +endif + lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o |