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authorSteven Rostedt <srostedt@redhat.com>2011-04-12 18:59:10 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-05-17 10:41:49 -0400
commita3a8350ab2f588f3a7a08dc86658bf90773f9a52 (patch)
tree723c1381ccff878bbf2302afbb6b1f84a4b34513 /Makefile
parent06fd6f6301cce9af4a03dd9e40bfca167e931ff1 (diff)
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'