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@suse.cz>
Link: http://lkml.kernel.org/r/20110517133646.GP13293@sepie.suse.cz
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d5f925abe4d2..7d3f9036eee2 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)