Kconfig.debug: Add FRAME_POINTER anti-dependency for ARC (cc80ae38) · Commits · 戴 / test

Frame pointer on ARC doesn't serve the conventional purpose of stack unwinding due to the typical way ABI designates it's usage. Thus it's explicit usage on ARC is discouraged (gcc is free to use it, for some tricky stack frames even if -fomit-frame-pointer). Hence no point enabling it for ARC. References: http://www.spinics.net/lists/kernel/msg1593937.html Signed-off-by:

Vineet Gupta <vgupta@synopsys.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Paul E. McKenney" <paul.mckenney@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Michel Lespinasse <walken@google.com> Cc: linux-kernel@vger.kernel.org

lib/Kconfig.debug

+3 −3

Original line number	Diff line number	Diff line
		@@ -908,7 +908,7 @@ config LOCKDEP
		bool
		depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
		select STACKTRACE
		select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE
		select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE && !ARC
		select KALLSYMS
		select KALLSYMS_ALL

		@@ -1347,7 +1347,7 @@ config FAULT_INJECTION_STACKTRACE_FILTER
		depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
		depends on !X86_64
		select STACKTRACE
		select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND
		select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC
		help
		Provide stacktrace filter for fault-injection capabilities

		@@ -1357,7 +1357,7 @@ config LATENCYTOP
		depends on DEBUG_KERNEL
		depends on STACKTRACE_SUPPORT
		depends on PROC_FS
		select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND
		select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC
		select KALLSYMS
		select KALLSYMS_ALL
		select STACKTRACE

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