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Subject[PATCH 4.19 093/148] powerpc: consolidate -mno-sched-epilog into FTRACE flags
Date
4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nicholas Piggin <npiggin@gmail.com>

commit 2a056f58fd33ccc6a0261b552b0f17e7fa4a12f3 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>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/Makefile | 12 ++++++------
arch/powerpc/kernel/Makefile | 8 ++++----
arch/powerpc/kernel/trace/Makefile | 2 +-
arch/powerpc/platforms/powermac/Makefile | 2 +-
arch/powerpc/xmon/Makefile | 2 +-
5 files changed, 13 insertions(+), 13 deletions(-)

--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -160,8 +160,13 @@ else
CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
endif

+ifdef CONFIG_FUNCTION_TRACER
+CC_FLAGS_FTRACE := -pg
ifdef CONFIG_MPROFILE_KERNEL
- CC_FLAGS_FTRACE := -pg -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
endif

CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU))
@@ -229,11 +234,6 @@ ifdef CONFIG_6xx
KBUILD_CFLAGS += -mcpu=powerpc
endif

-# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
-ifdef CONFIG_FUNCTION_TRACER
-KBUILD_CFLAGS += -mno-sched-epilog
-endif
-
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
cpu-as-$(CONFIG_E200) += -Wa,-me200
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -22,10 +22,10 @@ CFLAGS_prom.o += $(DISABLE_LATENT_ENTROP

ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code
-CFLAGS_REMOVE_cputable.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_prom_init.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_btext.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_prom.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_cputable.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_prom_init.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_btext.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_prom.o = $(CC_FLAGS_FTRACE)
endif

obj-y := cputable.o ptrace.o syscalls.o \
--- a/arch/powerpc/kernel/trace/Makefile
+++ b/arch/powerpc/kernel/trace/Makefile
@@ -7,7 +7,7 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -

ifdef CONFIG_FUNCTION_TRACER
# do not trace tracer code
-CFLAGS_REMOVE_ftrace.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
endif

obj32-$(CONFIG_FUNCTION_TRACER) += ftrace_32.o
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -3,7 +3,7 @@ CFLAGS_bootx_init.o += -fPIC

ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code
-CFLAGS_REMOVE_bootx_init.o = -mno-sched-epilog $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_bootx_init.o = $(CC_FLAGS_FTRACE)
endif

obj-y += pic.o setup.o time.o feature.o pci.o \
--- a/arch/powerpc/xmon/Makefile
+++ b/arch/powerpc/xmon/Makefile
@@ -8,7 +8,7 @@ UBSAN_SANITIZE := n

# Disable ftrace for the entire directory
ORIG_CFLAGS := $(KBUILD_CFLAGS)
-KBUILD_CFLAGS = $(subst -mno-sched-epilog,,$(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)))
+KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))

ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)


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