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Commit c3128fb6 authored by Don Zickus's avatar Don Zickus Committed by Ingo Molnar
Browse files

nmi_watchdog: Use a boolean config flag for compiling 



Determines if an arch has setup arch specific perf_events and
nmi_watchdog code.  This should restrict compiles to only those
arches ready.

Signed-off-by: default avatarDon Zickus <dzickus@redhat.com>
Cc: peterz@infradead.org
Cc: gorcunov@gmail.com
Cc: aris@redhat.com
LKML-Reference: <1266013161-31197-1-git-send-email-dzickus@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 8e7672cd

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ config X86 
	select HAVE_KERNEL_LZO

	select HAVE_HW_BREAKPOINT

	select PERF_EVENTS

	select PERF_EVENTS_NMI

	select ANON_INODES

	select HAVE_ARCH_KMEMCHECK

	select HAVE_USER_RETURN_NOTIFIER

init/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -946,6 +946,11 @@ config PERF_USE_VMALLOC 
	help

	  See tools/perf/design.txt for details



config PERF_EVENTS_NMI

	bool

	help

	  Arch has support for nmi_watchdog



menu "Kernel Performance Events And Counters"



config PERF_EVENTS

lib/Kconfig.debug

+1 −2
Original line number Diff line number Diff line
@@ -172,8 +172,7 @@ config DETECT_SOFTLOCKUP 


config NMI_WATCHDOG

	bool "Detect Hard Lockups with an NMI Watchdog"

	depends on DEBUG_KERNEL && PERF_EVENTS

	depends on X86

	depends on DEBUG_KERNEL && PERF_EVENTS && PERF_EVENTS_NMI

	default y

	help

	  Say Y here to enable the kernel to use the NMI as a watchdog