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authorHeiko Carstens <heiko.carstens@de.ibm.com>2016-12-07 10:36:05 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-12-12 12:10:15 +0100
commitb5cb9bf8dd2ce94a2de507bc7546d965cbd421a6 (patch)
tree969308df339402228d40723fb1451bf1decce88b
parenta521b048bc8c5d3c57a468c2cba70eb60e873616 (diff)
downloadblackbird-op-linux-b5cb9bf8dd2ce94a2de507bc7546d965cbd421a6.tar.gz
blackbird-op-linux-b5cb9bf8dd2ce94a2de507bc7546d965cbd421a6.zip
s390: exclude early C code from gcov profiling
Early C code must be excluded from gcov profiling since it may write to the bss section before - a potential initrd that resides there is rescued - the bss section is initialized (zeroed) This patch only addresses the problem that early code is instrumented for profiling, but not the problem that it jumps into other code that is still instrumented. That problem will be fixed with a follow-on patch. Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--arch/s390/kernel/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 1f0fe98f6db9..18bd8ccd2d21 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -46,6 +46,7 @@ CFLAGS_als.o += -march=z900
AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
AFLAGS_head.o += -march=z900
endif
+GCOV_PROFILE_early.o := n
GCOV_PROFILE_sclp.o := n
GCOV_PROFILE_als.o := n
UBSAN_SANITIZE_als.o := n
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