watchdog: clean up some function names and arguments

Rename the update_timers*() functions to update_watchdog*().

Remove the boolean argument from watchdog_enable_all_cpus() because
update_watchdog_all_cpus() is now a generic function to change the run
state of the lockup detectors and to have the lockup detectors use a new
sample period.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 63d7028..49d0225 100644 (file)
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -653,7 +653,7 @@ static void restart_watchdog_hrtimer(void *info)
                                HRTIMER_MODE_REL_PINNED);
 }
 
-static void update_timers(int cpu)
+static void update_watchdog(int cpu)
 {
        /*
         * Make sure that perf event counter will adopt to a new
@@ -668,17 +668,17 @@ static void update_timers(int cpu)
        watchdog_nmi_enable(cpu);
 }
 
-static void update_timers_all_cpus(void)
+static void update_watchdog_all_cpus(void)
 {
        int cpu;
 
        get_online_cpus();
        for_each_online_cpu(cpu)
-               update_timers(cpu);
+               update_watchdog(cpu);
        put_online_cpus();
 }
 
-static int watchdog_enable_all_cpus(bool sample_period_changed)
+static int watchdog_enable_all_cpus(void)
 {
        int err = 0;
 
@@ -688,8 +688,12 @@ static int watchdog_enable_all_cpus(bool sample_period_changed)
                        pr_err("Failed to create watchdog threads, disabled\n");
                else
                        watchdog_running = 1;
-       } else if (sample_period_changed) {
-               update_timers_all_cpus();
+       } else {
+               /*
+                * Enable/disable the lockup detectors or
+                * change the sample period 'on the fly'.
+                */
+               update_watchdog_all_cpus();
        }
 
        return err;
@@ -721,7 +725,7 @@ static int proc_watchdog_update(void)
         * or disabled 'on the fly'.
         */
        if (watchdog_enabled && watchdog_thresh)
-               err = watchdog_enable_all_cpus(true);
+               err = watchdog_enable_all_cpus();
        else
                watchdog_disable_all_cpus();
 
@@ -861,5 +865,5 @@ void __init lockup_detector_init(void)
        set_sample_period();
 
        if (watchdog_enabled)
-               watchdog_enable_all_cpus(false);
+               watchdog_enable_all_cpus();
 }