clocksource: Rework stale comment

Peter Zijlstra · KAGA-KOKO · commit 7dba33c6346c · 2018-05-02T16:10:41.000+02:00
AFAICS the hotplug code no longer uses this function. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: len.brown@intel.com Cc: rjw@rjwysocki.net Cc: diego.viola@gmail.com Cc: rui.zhang@intel.com Link: https://lkml.kernel.org/r/20180430100344.656525644@infradead.org
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
@@ -173,10 +173,8 @@ static void __clocksource_unstable(struct clocksource *cs)
  * clocksource_mark_unstable - mark clocksource unstable via watchdog
  * @cs:		clocksource to be marked unstable
  *
- * This function is called instead of clocksource_change_rating from
- * cpu hotplug code to avoid a deadlock between the clocksource mutex
- * and the cpu hotplug mutex. It defers the update of the clocksource
- * to the watchdog thread.
+ * This function is called by the x86 TSC code to mark clocksources as unstable;
+ * it defers demotion and re-selection to a kthread.
  */
 void clocksource_mark_unstable(struct clocksource *cs)
 {

Original file line number	Diff line number	Diff line change
`@@ -173,10 +173,8 @@ static void __clocksource_unstable(struct clocksource *cs)`
`173`	`173`	`* clocksource_mark_unstable - mark clocksource unstable via watchdog`
`174`	`174`	`* @cs: clocksource to be marked unstable`
`175`	`175`	`*`
`176`		`- * This function is called instead of clocksource_change_rating from`
`177`		`- * cpu hotplug code to avoid a deadlock between the clocksource mutex`
`178`		`- * and the cpu hotplug mutex. It defers the update of the clocksource`
`179`		`- * to the watchdog thread.`
	`176`	`+ * This function is called by the x86 TSC code to mark clocksources as unstable;`
	`177`	`+ * it defers demotion and re-selection to a kthread.`
`180`	`178`	`*/`
`181`	`179`	`void clocksource_mark_unstable(struct clocksource *cs)`
`182`	`180`	`{`