Commit 907fa061 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent e238c15e

arch/s390/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/s390/boot/compressed/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -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

arch/s390/kernel/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -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)

arch/s390/kernel/vdso32/Makefile

+2 −0
Original line number Diff line number Diff line 
# 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

arch/s390/kernel/vdso64/Makefile

+2 −0
Original line number Diff line number Diff line 
# 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

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