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| author |   Len Brown <len.brown@intel.com> | 2010-05-24 11:41:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-05-27 21:07:06 -0400 |
| commit | a7d27c37533524e23bbdc9ba1d78e3241b7483ea (patch) | |
| tree | 9a9e08b7341c358b039059abfab420c06d0416d1 /drivers/acpi/acpi_pad.c | |
| parent | sched: clarify commment for TS_POLLING (diff) | |
| download | linux-dev-a7d27c37533524e23bbdc9ba1d78e3241b7483ea.tar.xz linux-dev-a7d27c37533524e23bbdc9ba1d78e3241b7483ea.zip | |
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: Len Brown <len.brown@intel.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_pad.c')
| -rw-r--r-- | drivers/acpi/acpi_pad.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 62122134693b..7edf053983c5 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -168,13 +168,6 @@ static int power_saving_thread(void *data) 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; 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. * When a rt task uses 95% CPU time, the rt thread will be |