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| author | Steven Rostedt <srostedt@redhat.com> | 2010-10-13 17:12:30 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-10-14 16:52:41 -0400 |
| commit | 72441cb1fd77d092f09ddfac748955703884c9a7 (patch) | |
| tree | 3b02aecebf718f1cb6e9752b809e825b237527da /Makefile | |
| parent | 81d3858d3131a589cade0d8b57f95cc1fc699b89 (diff) | |
| download | linux-72441cb1fd77d092f09ddfac748955703884c9a7.tar.bz2 | |
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 'Makefile')
| -rw-r--r-- | Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -568,6 +568,12 @@ endif ifdef CONFIG_FUNCTION_TRACER KBUILD_CFLAGS += -pg +ifdef CONFIG_DYNAMIC_FTRACE + ifdef CONFIG_HAVE_C_MCOUNT_RECORD + BUILD_C_RECORDMCOUNT := y + export BUILD_C_RECORDMCOUNT + endif +endif endif # We trigger additional mismatches with less inlining |