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| author |   Nicholas Piggin <npiggin@gmail.com> | 2018-09-14 15:08:54 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-09-19 22:01:56 +1000 |
| commit | 6977f95e63b9b3fb4a5973481a800dd9f48a1338 (patch) | |
| tree | a36fdfab44462fe31d77d2db7f44217a1960527b /arch/powerpc/Makefile | |
| parent | powerpc: consolidate -mno-sched-epilog into FTRACE flags (diff) | |
| download | linux-dev-6977f95e63b9b3fb4a5973481a800dd9f48a1338.tar.xz linux-dev-6977f95e63b9b3fb4a5973481a800dd9f48a1338.zip | |
powerpc: avoid -mno-sched-epilog on GCC 4.9 and newer
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index be47cf8a0798..07d9dce7eda6 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -165,8 +165,12 @@ CC_FLAGS_FTRACE := -pg ifdef CONFIG_MPROFILE_KERNEL CC_FLAGS_FTRACE += -mprofile-kernel endif -# Work around a gcc code-gen bug with -fno-omit-frame-pointer. -CC_FLAGS_FTRACE += -mno-sched-epilog +# Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8 +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199 +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828 +ifneq ($(cc-name),clang) +CC_FLAGS_FTRACE += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog) +endif endif CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU)) |