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Commit cc80ae38 authored by Vineet Gupta's avatar Vineet Gupta
Browse files

Kconfig.debug: Add FRAME_POINTER anti-dependency for ARC 

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: default avatarVineet 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
parent 7efd0da2

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