4.9-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Gleixner tglx@linutronix.de
commit ed4bbf7910b28ce3c691aef28d245585eaabda06 upstream.
When the timer base is checked for expired timers then the deferrable base must be checked as well. This was missed when making the deferrable base independent of base::nohz_active.
Fixes: ced6d5c11d3e ("timers: Use deferrable base independent of base::nohz_active") Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Anna-Maria Gleixner anna-maria@linutronix.de Cc: Frederic Weisbecker fweisbec@gmail.com Cc: Peter Zijlstra peterz@infradead.org Cc: Sebastian Siewior bigeasy@linutronix.de Cc: Paul McKenney paulmck@linux.vnet.ibm.com Cc: rt@linutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- kernel/time/timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1696,7 +1696,7 @@ void run_local_timers(void) hrtimer_run_queues(); /* Raise the softirq only if required. */ if (time_before(jiffies, base->clk)) { - if (!IS_ENABLED(CONFIG_NO_HZ_COMMON) || !base->nohz_active) + if (!IS_ENABLED(CONFIG_NO_HZ_COMMON)) return; /* CPU is awake, so check the deferrable base. */ base++;