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| author |   Sven Schnelle <svens@linux.ibm.com> | 2020-09-07 17:45:37 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-09-14 10:30:07 +0200 |
| commit | 4bf3ec384edf0bf893ec7bd62ccebb635b02efd9 (patch) | |
| tree | c7cd889be045b56dfca6319dfbccc999ea1f6baf /arch/s390/kernel/vdso64 | |
| parent | s390: convert to GENERIC_VDSO (diff) | |
| download | linux-dev-4bf3ec384edf0bf893ec7bd62ccebb635b02efd9.tar.xz linux-dev-4bf3ec384edf0bf893ec7bd62ccebb635b02efd9.zip | |
s390: disable branch profiling for vdso
When branch profiling is enabled, if () gets annotated with code to
instrument the hit/miss ratio. This doesn't work for VDSO as we can't
access kernel code. Add -DDISABLE_BRANCH_PROFILING to fix this.
Reported-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/vdso64')
| -rw-r--r-- | arch/s390/kernel/vdso64/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index f1c0570780d1..3d3303283181 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -17,7 +17,7 @@ obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) obj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64)) KBUILD_AFLAGS += -DBUILD_VDSO -KBUILD_CFLAGS += -DBUILD_VDSO +KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_64 += -m64 -s |