AFAICS the hotplug code no longer uses this function. Signed-off-by: Peter Zijlstra (Intel) --- kernel/time/clocksource.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -173,10 +173,8 @@ static void __clocksource_unstable(struc * 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) {