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| author | Steven Rostedt <srostedt@redhat.com> | 2010-10-13 23:12:30 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-10-14 22:52:41 +0200 |
| commit | 72441cb1fd77d092f09ddfac748955703884c9a7 (patch) | |
| tree | 3b02aecebf718f1cb6e9752b809e825b237527da /scripts/Makefile.build | |
| parent | ftrace: Add C version of recordmcount compile time code (diff) | |
| download | linux-72441cb1fd77d092f09ddfac748955703884c9a7.tar.xz linux-72441cb1fd77d092f09ddfac748955703884c9a7.zip | |
ftrace/x86: Add support for C version of recordmcount
This patch adds the support for the C version of recordmcount and
compile times show ~ 12% improvement.
After verifying this works, other archs can add:
HAVE_C_MCOUNT_RECORD
in its Kconfig and it will use the C version of recordmcount
instead of the perl version.
Cc: <linux-arch@vger.kernel.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: linux-kbuild@vger.kernel.org
Cc: John Reiser <jreiser@bitwagon.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'scripts/Makefile.build')
| -rw-r--r-- | scripts/Makefile.build | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build index a1a5cf95a68d..4d03a7efc689 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -209,12 +209,16 @@ cmd_modversions = \ endif ifdef CONFIG_FTRACE_MCOUNT_RECORD +ifdef BUILD_C_RECORDMCOUNT +cmd_record_mcount = $(srctree)/scripts/recordmcount "$(@)"; +else cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ "$(if $(CONFIG_64BIT),64,32)" \ "$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" "$(MV)" \ "$(if $(part-of-module),1,0)" "$(@)"; endif +endif define rule_cc_o_c $(call echo-cmd,checksrc) $(cmd_checksrc) \ |