linux-kernel - [PATCH 15/53] sched/headers: Move softlockup detector watchdog methods to <linux/nmi.h>

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Date:   Wed,  8 Feb 2017 19:44:46 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mike Galbraith <efault@....de>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 15/53] sched/headers: Move softlockup detector watchdog methods to <linux/nmi.h>

These methods don't belong into <linux/sched.h>, they are neither directly
related to task_struct or are scheduler functionality.

Put them next to the other watchdog methods in <linux/nmi.h>.

( Arguably that header's name is a misnomer, and this patch makes it
  more so - but it should be renamed in another patch. )

Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Mike Galbraith <efault@....de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/nmi.h   | 37 +++++++++++++++++++++++++++++++++++++
 include/linux/sched.h | 37 -------------------------------------
 2 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 0a3fadc32693..aa3cd0878270 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -7,6 +7,43 @@
 #include <linux/sched.h>
 #include <asm/irq.h>
 
+#ifdef CONFIG_LOCKUP_DETECTOR
+extern void touch_softlockup_watchdog_sched(void);
+extern void touch_softlockup_watchdog(void);
+extern void touch_softlockup_watchdog_sync(void);
+extern void touch_all_softlockup_watchdogs(void);
+extern int proc_dowatchdog_thresh(struct ctl_table *table, int write,
+				  void __user *buffer,
+				  size_t *lenp, loff_t *ppos);
+extern unsigned int  softlockup_panic;
+extern unsigned int  hardlockup_panic;
+void lockup_detector_init(void);
+#else
+static inline void touch_softlockup_watchdog_sched(void)
+{
+}
+static inline void touch_softlockup_watchdog(void)
+{
+}
+static inline void touch_softlockup_watchdog_sync(void)
+{
+}
+static inline void touch_all_softlockup_watchdogs(void)
+{
+}
+static inline void lockup_detector_init(void)
+{
+}
+#endif
+
+#ifdef CONFIG_DETECT_HUNG_TASK
+void reset_hung_task_detector(void);
+#else
+static inline void reset_hung_task_detector(void)
+{
+}
+#endif
+
 /*
  * The run state of the lockup detectors is controlled by the content of the
  * 'watchdog_enabled' variable. Each lockup detector has its dedicated bit -
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 966c53903eff..0278deb1a992 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -286,43 +286,6 @@ extern int sched_cpu_dying(unsigned int cpu);
 
 extern void sched_show_task(struct task_struct *p);
 
-#ifdef CONFIG_LOCKUP_DETECTOR
-extern void touch_softlockup_watchdog_sched(void);
-extern void touch_softlockup_watchdog(void);
-extern void touch_softlockup_watchdog_sync(void);
-extern void touch_all_softlockup_watchdogs(void);
-extern int proc_dowatchdog_thresh(struct ctl_table *table, int write,
-				  void __user *buffer,
-				  size_t *lenp, loff_t *ppos);
-extern unsigned int  softlockup_panic;
-extern unsigned int  hardlockup_panic;
-void lockup_detector_init(void);
-#else
-static inline void touch_softlockup_watchdog_sched(void)
-{
-}
-static inline void touch_softlockup_watchdog(void)
-{
-}
-static inline void touch_softlockup_watchdog_sync(void)
-{
-}
-static inline void touch_all_softlockup_watchdogs(void)
-{
-}
-static inline void lockup_detector_init(void)
-{
-}
-#endif
-
-#ifdef CONFIG_DETECT_HUNG_TASK
-void reset_hung_task_detector(void);
-#else
-static inline void reset_hung_task_detector(void)
-{
-}
-#endif
-
 /* Attach to any functions which should be ignored in wchan output. */
 #define __sched		__attribute__((__section__(".sched.text")))
 
-- 
2.7.4