* [PATCH] powerpc/64s: Always disable branch profiling for prom_init.o
@ 2019-11-06 5:11 Michael Ellerman
2019-11-14 9:08 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Michael Ellerman @ 2019-11-06 5:11 UTC (permalink / raw)
To: linuxppc-dev
Otherwise the build fails because prom_init is calling symbols it's
not allowed to, eg:
Error: External symbol 'ftrace_likely_update' referenced from prom_init.c
make[3]: *** [arch/powerpc/kernel/Makefile:197: arch/powerpc/kernel/prom_init_check] Error 1
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/kernel/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 4fdd8a3e775b..717b52b65d62 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -22,6 +22,7 @@ CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_prom_init.o += $(call cc-option, -fno-stack-protector)
+CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING
ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code
@@ -39,7 +40,6 @@ KASAN_SANITIZE_btext.o := n
ifdef CONFIG_KASAN
CFLAGS_early_32.o += -DDISABLE_BRANCH_PROFILING
CFLAGS_cputable.o += -DDISABLE_BRANCH_PROFILING
-CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING
CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING
endif
--
2.21.0
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2019-11-14 9:08 ` Michael Ellerman
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