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authorHeiko Carstens <heiko.carstens@de.ibm.com>2015-01-09 13:06:33 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-01-29 09:19:19 +0100
commitc0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3 (patch)
tree4c3a34ab47f07da13df0f351db4cef929f07bcf9 /Makefile
parent4d92f50249eb3ed1c066276e214e8cc7be81e96d (diff)
downloadlinux-linaro-stable-c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3.tar.gz
ftrace: allow architectures to specify ftrace compile options
If the kernel is compiled with function tracer support the -pg compile option is passed to gcc to generate extra code into the prologue of each function. This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE makefile variable which architectures can override if a different option should be used for code generation. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile6
1 files changed, 5 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index fd80c6e9bc23..11c6fe8f708f 100644
--- a/Makefile
+++ b/Makefile
@@ -724,10 +724,14 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
endif
ifdef CONFIG_FUNCTION_TRACER
+ifndef CC_FLAGS_FTRACE
+CC_FLAGS_FTRACE := -pg
+endif
+export CC_FLAGS_FTRACE
ifdef CONFIG_HAVE_FENTRY
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
endif
-KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
+KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
KBUILD_AFLAGS += $(CC_USING_FENTRY)
ifdef CONFIG_DYNAMIC_FTRACE
ifdef CONFIG_HAVE_C_RECORDMCOUNT