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kernel/watchdog: move NMI function header declarations from watchdog.h to nmi.h

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The kernel's NMI watchdog has nothing to do with the watchdog subsystem.
Its header declarations should be in linux/nmi.h, not linux/watchdog.h.

The code provided two sets of dummy functions if HARDLOCKUP_DETECTOR is
not configured, one in the include file and one in kernel/watchdog.c.
Remove the dummy functions from kernel/watchdog.c and use those from the
include file.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guenter Roeck 2015-09-04 15:45:12 -07:00 committed by Linus Torvalds
parent 314b08ff52
commit aacfbe6a97
4 changed files with 6 additions and 14 deletions
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2
arch/x86/kernel/cpu/perf_event_intel.c
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@ -12,7 +12,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/watchdog.h>
#include <linux/nmi.h>
#include <asm/cpufeature.h>
#include <asm/hardirq.h>

8
include/linux/nmi.h
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@ -26,10 +26,12 @@ static inline void touch_nmi_watchdog(void)
#if defined(CONFIG_HARDLOCKUP_DETECTOR)
extern void hardlockup_detector_disable(void);
void watchdog_nmi_disable_all(void);
void watchdog_nmi_enable_all(void);
#else
static inline void hardlockup_detector_disable(void)
{
}
static inline void hardlockup_detector_disable(void) {}
static inline void watchdog_nmi_disable_all(void) {}
static inline void watchdog_nmi_enable_all(void) {}
#endif
/*

8
include/linux/watchdog.h
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@ -140,12 +140,4 @@ 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 */

2
kernel/watchdog.c
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@ -651,8 +651,6 @@ unlock:
#else
static int watchdog_nmi_enable(unsigned int cpu) { return 0; }
static void watchdog_nmi_disable(unsigned int cpu) { return; }
void watchdog_nmi_enable_all(void) {}
void watchdog_nmi_disable_all(void) {}
#endif /* CONFIG_HARDLOCKUP_DETECTOR */
static struct smp_hotplug_thread watchdog_threads = {