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>

1 files changed, 12 insertions, 8 deletions

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 63d702885686..49d02250aaac 100644
--- 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();
 }