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powerpc/64s: Always disable branch profiling for prom_init.o 

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>
Link: https://lore.kernel.org/r/20191106051129.7626-1-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2019-11-06 13:30:25 +11:00
parent 3775026a65
commit 6266a4dadb
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/Makefile
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@ -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