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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-06-20 14:08:32 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-28 09:32:39 +0200 |
| commit | 907fa061cc24f7092db4fcb7938b9cb6ea7dd15e (patch) | |
| tree | bb1e172354bb805359f98358e0ba4fc573dd5ac6 | |
| parent | s390/cpumf: use basic block for ecctr inline assembly (diff) | |
| download | linux-907fa061cc24f7092db4fcb7938b9cb6ea7dd15e.tar.xz linux-907fa061cc24f7092db4fcb7938b9cb6ea7dd15e.zip | |
s390: enable kcov support
Now that hopefully all inline assemblies have been converted to single
basic blocks we can enable kcov on s390.
Note that this patch does not disable as many files on s390 like the
x86 variant does. Right now I didn't see a reason to do that, however
additional files or directories can be excluded at any time.
The runtime overhead seems to be quite high.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/boot/compressed/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/Makefile | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/vdso32/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/vdso64/Makefile | 2 |
5 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index ac963903d54f..9e607bf2d640 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -72,6 +72,7 @@ config S390 select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_KCOV select ARCH_HAS_SG_CHAIN select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_INLINE_READ_LOCK diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile index 1dd210347e12..98ec652cc332 100644 --- a/arch/s390/boot/compressed/Makefile +++ b/arch/s390/boot/compressed/Makefile @@ -4,6 +4,8 @@ # create a compressed vmlinux image from the original vmlinux # +KCOV_INSTRUMENT := n + targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 targets += misc.o piggy.o sizes.h head.o diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 8d1419120bb7..f37be37edd3a 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -2,6 +2,9 @@ # Makefile for the linux kernel. # +KCOV_INSTRUMENT_early.o := n +KCOV_INSTRUMENT_sclp.o := n + ifdef CONFIG_FUNCTION_TRACER # Don't trace early setup code and tracing code CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE) diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index f9c459586649..68145456fee2 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -1,5 +1,7 @@ # List of files in the vdso, has to be asm only for now +KCOV_INSTRUMENT := n + obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o # Build rules diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index 058659c1b8cf..0b0fd22c869a 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -1,5 +1,7 @@ # List of files in the vdso, has to be asm only for now +KCOV_INSTRUMENT := n + obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o # Build rules |