diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2007-11-20 01:49:00 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-11-20 03:32:02 +0100 |
| commit | 5062911830a66df0c0ad28c387a8c0623cb0d28c (patch) | |
| tree | 95624d73fa437638ae720217f505492f77f56201 /drivers | |
| parent | cpuidle: fix C3 for no bus-master control case (diff) | |
| download | linux-5062911830a66df0c0ad28c387a8c0623cb0d28c.tar.xz linux-5062911830a66df0c0ad28c387a8c0623cb0d28c.zip | |
cpuidle: add sched_clock_idle_[sleep|wakeup]_event() hooks
Port 2aa44d0567ed21b47b87d68819415d48194cb923
(sched: sched_clock_idle_[sleep|wakeup]_event()) to cpuidle.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 943a88069001..1af0694e8520 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1411,6 +1411,8 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, struct acpi_processor *pr; struct acpi_processor_cx *cx = cpuidle_get_statedata(state); u32 t1, t2; + int sleep_ticks = 0; + pr = processors[smp_processor_id()]; if (unlikely(!pr)) @@ -1440,6 +1442,8 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, ACPI_FLUSH_CPU_CACHE(); t1 = inl(acpi_gbl_FADT.xpm_timer_block.address); + /* Tell the scheduler that we are going deep-idle: */ + sched_clock_idle_sleep_event(); acpi_state_timer_broadcast(pr, cx, 1); acpi_idle_do_entry(cx); t2 = inl(acpi_gbl_FADT.xpm_timer_block.address); @@ -1448,6 +1452,10 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, /* TSC could halt in idle, so notify users */ mark_tsc_unstable("TSC halts in idle");; #endif + sleep_ticks = ticks_elapsed(t1, t2); + + /* Tell the scheduler how much we idled: */ + sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS); local_irq_enable(); current_thread_info()->status |= TS_POLLING; @@ -1455,7 +1463,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, cx->usage++; acpi_state_timer_broadcast(pr, cx, 0); - cx->time += ticks_elapsed(t1, t2); + cx->time += sleep_ticks; return ticks_elapsed_in_us(t1, t2); } @@ -1475,6 +1483,8 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, struct acpi_processor *pr; struct acpi_processor_cx *cx = cpuidle_get_statedata(state); u32 t1, t2; + int sleep_ticks = 0; + pr = processors[smp_processor_id()]; if (unlikely(!pr)) @@ -1497,6 +1507,8 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, return 0; } + /* Tell the scheduler that we are going deep-idle: */ + sched_clock_idle_sleep_event(); /* * Must be done before busmaster disable as we might need to * access HPET ! @@ -1552,6 +1564,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, /* TSC could halt in idle, so notify users */ mark_tsc_unstable("TSC halts in idle"); #endif + sleep_ticks = ticks_elapsed(t1, t2); + /* Tell the scheduler how much we idled: */ + sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS); local_irq_enable(); current_thread_info()->status |= TS_POLLING; @@ -1559,7 +1574,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, cx->usage++; acpi_state_timer_broadcast(pr, cx, 0); - cx->time += ticks_elapsed(t1, t2); + cx->time += sleep_ticks; return ticks_elapsed_in_us(t1, t2); } |