diff options
| author | Alex Frid <afrid@nvidia.com> | 2011-09-28 20:41:30 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:49:36 -0800 |
| commit | f6c9111abff52b32e62d13e7e54d1d7cb9458ad2 (patch) | |
| tree | f45a65ff38eca3c18574c31e41dd116a40666882 /arch/arm/mach-tegra/cpuidle.c | |
| parent | f7b2a737ff608e14a97f5941e50d707ad94d8786 (diff) | |
ARM: tegra: power: Fix LP2/LP3 states accounting on Tegra3
- Made sure LP3 state is reported as last entered state to cpuidle
governor in case when LP3 is entered as a fall back from LP2 path.
- Accumulate idle time designated to LP2 state by cpuidle governor
and time actually spent in LP2 by each CPU separately. Update LP2
statistic output.
Change-Id: I55b461e94925ba7a41112756ed958f81fc0bc882
Reviewed-on: http://git-master/r/60381
Tested-by: Aleksandr Frid <afrid@nvidia.com>
Tested-by: Gerrit_Virtual_Submit
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Rebase-Id: R240873bd1de225696d392ac5ba2c3d517c59d86e
Diffstat (limited to 'arch/arm/mach-tegra/cpuidle.c')
| -rw-r--r-- | arch/arm/mach-tegra/cpuidle.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c index a51a72a985c3..bdf45f81f9da 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle.c @@ -122,12 +122,15 @@ static int tegra_idle_enter_lp2(struct cpuidle_device *dev, hrtimer_peek_ahead_timers(); smp_rmb(); - state->exit_latency = tegra_lp2_exit_latency; - state->target_residency = tegra_lp2_exit_latency + - tegra_lp2_power_off_time; - if (state->target_residency < tegra_lp2_min_residency) - state->target_residency = tegra_lp2_min_residency; + /* Update LP2 latency provided no fall back to LP3 */ + if (state == dev->last_state) { + state->exit_latency = tegra_lp2_exit_latency; + state->target_residency = tegra_lp2_exit_latency + + tegra_lp2_power_off_time; + if (state->target_residency < tegra_lp2_min_residency) + state->target_residency = tegra_lp2_min_residency; + } tegra_cpu_idle_stats_lp2_time(dev->cpu, us); return (int)us; |