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authorSteven Rostedt <srostedt@redhat.com>2011-04-12 18:59:10 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-05-16 14:45:03 -0400
commit85356f802225fedeee8c3e65bdd93b263ace0a8b (patch)
tree4b9b29634f4235a7a185a7c3ea2947cef422b99b /Makefile
parentdfad3d598c4bbbaf137588e22bac1ce624529f7e (diff)
downloadlinux-linaro-precise-85356f802225fedeee8c3e65bdd93b263ace0a8b.tar.gz
kbuild/recordmcount: Add RECORDMCOUNT_WARN to warn about mcount callers
When mcount is called in a section that ftrace will not modify it into a nop, we want to warn about this. But not warn about this always. Now if the user builds the kernel with the option RECORDMCOUNT_WARN=1 then the build will warn about mcount callers that are ignored and will just waste execution time. Acked-by: Michal Marek <mmarek@suse.cz> Cc: linux-kbuild@vger.kernel.org Link: http://lkml.kernel.org/r/20110421023738.714956282@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 41ea6fbec55..e7d01adaf69 100644
--- a/Makefile
+++ b/Makefile
@@ -1268,6 +1268,7 @@ help:
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
@echo ' make W=1 [targets] Enable extra gcc checks'
+ @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info see the ./README file'