Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 069/105] powerpc: avoid -mno-sched-epilog on GCC 4.9 and newer | Date | Fri, 11 Jan 2019 15:14:40 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Nicholas Piggin <npiggin@gmail.com>
commit 6977f95e63b9b3fb4a5973481a800dd9f48a1338 upstream.
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> [nc: Adjust context due to lack of f2910f0e6835 and 2a056f58fd33] Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/powerpc/Makefile | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -236,7 +236,12 @@ endif # Work around a gcc code-gen bug with -fno-omit-frame-pointer. ifeq ($(CONFIG_FUNCTION_TRACER),y) -KBUILD_CFLAGS += -mno-sched-epilog +# Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8 +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199 +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828 +ifneq ($(cc-name),clang) +KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog) +endif endif cpu-as-$(CONFIG_4xx) += -Wa,-m405
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