linux-kernel - [tip:perf/core] ftrace/kbuild: Add recordmcount files to force full build

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Message-ID: <tip-44e6a2069122dbec29d25b8ced3f59f5626a97d7@git.kernel.org>
Date:	Thu, 16 Jun 2011 14:03:55 GMT
From:	tip-bot for Michal Marek <mmarek@...e.cz>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	rostedt@...dmis.org, mmarek@...e.cz, tglx@...utronix.de
Subject: [tip:perf/core] ftrace/kbuild: Add recordmcount files to force full build

Commit-ID:  44e6a2069122dbec29d25b8ced3f59f5626a97d7
Gitweb:     http://git.kernel.org/tip/44e6a2069122dbec29d25b8ced3f59f5626a97d7
Author:     Michal Marek <mmarek@...e.cz>
AuthorDate: Tue, 17 May 2011 15:36:46 +0200
Committer:  Steven Rostedt <rostedt@...dmis.org>
CommitDate: Tue, 17 May 2011 10:41:08 -0400

ftrace/kbuild: Add recordmcount files to force full build

Modifications to recordmcount must be performed on all object
files to stay consistent with what the kernel code may expect.
Add the recordmcount files to the main dependencies to make sure
any change to them causes a full recompile.

Signed-off-by: Michal Marek <mmarek@...e.cz>
Link: http://lkml.kernel.org/r/20110517133646.GP13293@sepie.suse.cz
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 scripts/Makefile.build |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d5f925a..7d3f903 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -252,6 +252,8 @@ sub_cmd_record_mcount =					\
 	if [ $(@) != "scripts/mod/empty.o" ]; then	\
 		$(objtree)/scripts/recordmcount "$(@)";	\
 	fi;
+recordmcount_source := $(srctree)/scripts/recordmcount.c \
+		    $(srctree)/scripts/recordmcount.h
 else
 sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
 	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
@@ -259,6 +261,7 @@ sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH
 	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \
 	"$(LD)" "$(NM)" "$(RM)" "$(MV)" \
 	"$(if $(part-of-module),1,0)" "$(@)";
+recordmcount_source := $(srctree)/scripts/recordmcount.pl
 endif
 cmd_record_mcount = 						\
 	if [ "$(findstring -pg,$(_c_flags))" = "-pg" ]; then	\
@@ -279,13 +282,13 @@ define rule_cc_o_c
 endef
 
 # Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c FORCE
+$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
 	$(call cmd,force_checksrc)
 	$(call if_changed_rule,cc_o_c)
 
 # Single-part modules are special since we need to mark them in $(MODVERDIR)
 
-$(single-used-m): $(obj)/%.o: $(src)/%.c FORCE
+$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
 	$(call cmd,force_checksrc)
 	$(call if_changed_rule,cc_o_c)
 	@{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod)
--
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