diff options
| author |   Stephane Eranian <eranian@google.com> | 2014-11-17 20:07:03 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-04-02 17:33:15 +0200 |
| commit | b3738d29323344da3017a91010530cf3a58590fc (patch) | |
| tree | 0e8e97b896673ca3f2656c88e322c5def01cef69 /include/linux/watchdog.h | |
| parent | perf/x86/intel: Limit to half counters when the HT workaround is enabled, to avoid exclusive mode starvation (diff) | |
| download | linux-dev-b3738d29323344da3017a91010530cf3a58590fc.tar.xz linux-dev-b3738d29323344da3017a91010530cf3a58590fc.zip | |
watchdog: Add watchdog enable/disable all functions
This patch adds two new functions to enable/disable
the watchdog across all CPUs.
This will be used by the HT PMU bug workaround code to
disable/enable the NMI watchdog across quirk enablement.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: bp@alien8.de
Cc: jolsa@redhat.com
Cc: kan.liang@intel.com
Cc: maria.n.dimakopoulou@gmail.com
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1416251225-17721-12-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/watchdog.h')
| -rw-r--r-- | include/linux/watchdog.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 395b70e0eccf..a746bf5216f8 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -137,4 +137,12 @@ extern int watchdog_init_timeout(struct watchdog_device *wdd, extern int watchdog_register_device(struct watchdog_device *); extern void watchdog_unregister_device(struct watchdog_device *); +#ifdef CONFIG_HARDLOCKUP_DETECTOR +void watchdog_nmi_disable_all(void); +void watchdog_nmi_enable_all(void); +#else +static inline void watchdog_nmi_disable_all(void) {} +static inline void watchdog_nmi_enable_all(void) {} +#endif + #endif /* ifndef _LINUX_WATCHDOG_H */ |