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authorSteven Rostedt <srostedt@redhat.com>2010-10-13 17:12:30 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-10-14 16:52:41 -0400
commit72441cb1fd77d092f09ddfac748955703884c9a7 (patch)
tree3b02aecebf718f1cb6e9752b809e825b237527da /scripts/Makefile.build
parent81d3858d3131a589cade0d8b57f95cc1fc699b89 (diff)
downloadlinux-stericsson-72441cb1fd77d092f09ddfac748955703884c9a7.tar.gz
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.build4
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) \