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ARM: mach-bcm: disable ftrace in SMC invocation routines
The SMC calling convention uses R7 as an argument register, which conflicts with its use as a frame pointer when building in Thumb2 mode. Given that Clang with ftrace does not permit frame pointers to be disabled, let's omit this compilation unit from ftrace instrumentation. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Nick Desaulniers <ndesaulniers@google.com>
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@ -40,6 +40,7 @@ obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
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# Support for secure monitor traps
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obj-$(CONFIG_ARCH_BCM_MOBILE_SMC) += bcm_kona_smc.o
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CFLAGS_REMOVE_bcm_kona_smc.o += $(CC_FLAGS_FTRACE)
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# BCM2835
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ifeq ($(CONFIG_ARCH_BCM2835),y)
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