kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

cpuidle: add sched_clock_idle_[sleep|wakeup]_event() hooks

Browse source 
Port 2aa44d0567
(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>
This commit is contained in:
Venkatesh Pallipadi 2007-11-19 19:49:00 -05:00 committed by Len Brown
parent c9c860e534
commit 5062911830
1 changed files with 17 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
drivers/acpi/processor_idle.c
View file

@ -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);
}