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Commit a7d27c37 authored by Len Brown's avatar Len Brown
Browse files

acpi_pad: uses MONITOR/MWAIT, so it doesn't need to clear TS_POLLING 



api_pad exclusively uses MONITOR/MWAIT to sleep in idle,
so it does not need the wakeup IPI during idle sleep
that is provoked by clearing TS_POLLING.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
Cc: Shaohua Li <shaohua.li@intel.com>
parent e45b7fa2

drivers/acpi/acpi_pad.c

+0 −9
Original line number Original line Diff line number Diff line
@@ -168,13 +168,6 @@ static int power_saving_thread(void *data) 




		do_sleep = 0;

		do_sleep = 0;





		current_thread_info()->status &= ~TS_POLLING;

		/*

		 * TS_POLLING-cleared state must be visible before we test

		 * NEED_RESCHED:

		 */

		smp_mb();



		expire_time = jiffies + HZ * (100 - idle_pct) / 100;

		expire_time = jiffies + HZ * (100 - idle_pct) / 100;





		while (!need_resched()) {

		while (!need_resched()) {
@@ -200,8 +193,6 @@ static int power_saving_thread(void *data) 
			}

			}

		}

		}





		current_thread_info()->status |= TS_POLLING;



		/*

		/*

		 * current sched_rt has threshold for rt task running time.

		 * current sched_rt has threshold for rt task running time.

		 * When a rt task uses 95% CPU time, the rt thread will be

		 * When a rt task uses 95% CPU time, the rt thread will be