From 72441cb1fd77d092f09ddfac748955703884c9a7 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 13 Oct 2010 17:12:30 -0400 Subject: 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: Cc: Michal Marek Cc: linux-kbuild@vger.kernel.org Cc: John Reiser Signed-off-by: Steven Rostedt --- scripts/Makefile | 1 + scripts/Makefile.build | 4 ++++ 2 files changed, 5 insertions(+) (limited to 'scripts') diff --git a/scripts/Makefile b/scripts/Makefile index 842dbc2d5ae..2e088109fbd 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -11,6 +11,7 @@ hostprogs-$(CONFIG_KALLSYMS) += kallsyms hostprogs-$(CONFIG_LOGO) += pnmtologo hostprogs-$(CONFIG_VT) += conmakehash hostprogs-$(CONFIG_IKCONFIG) += bin2c +hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount always := $(hostprogs-y) $(hostprogs-m) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index a1a5cf95a68..4d03a7efc68 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) \ -- cgit v1.2.3-18-g5258