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authorDon Zickus <dzickus@redhat.com>2010-02-12 17:19:18 -0500
committerIngo Molnar <mingo@elte.hu>2010-02-14 09:19:43 +0100
commitc3128fb6ad39b0edda6675d20585a64846cf89ea (patch)
tree6737f0d375f6a313411dfefbe9405550642a147d
parent8e7672cdb413af859086ffceaed68f7e1e8ea4c2 (diff)
downloadop-kernel-dev-c3128fb6ad39b0edda6675d20585a64846cf89ea.zip
op-kernel-dev-c3128fb6ad39b0edda6675d20585a64846cf89ea.tar.gz
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>
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--init/Kconfig5
-rw-r--r--lib/Kconfig.debug3
3 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cbcbfde..4f9685f 100644
--- 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
index ada4844..7331a16d 100644
--- 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
index acef882..01a4d85 100644
--- 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
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