4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicholas Piggin <npiggin@xxxxxxxxx> commit 6977f95e63b9b3fb4a5973481a800dd9f48a1338 upstream. Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> Reviewed-by: Joel Stanley <joel@xxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/powerpc/Makefile | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- 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))
