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: Don 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: Ingo Molnar <mingo@elte.hu>
git-mirror · Feb 14, 2010 · c3128fb · c3128fb
1 parent 8e7672c
commit c3128fb
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Showing 3 changed files with 7 additions and 2 deletions.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
@@ -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

diff --git a/init/Kconfig b/init/Kconfig
@@ -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

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
@@ -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