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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-12-23 16:59:12 +0530 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-02-25 14:34:05 +0100 |
| commit | cf8c5009ee37d25cf4da0a250f3044ec6d1144a0 (patch) | |
| tree | c33c26fa30da506ed8ff56b8e69f4ceeda27c1b0 /drivers/clocksource | |
| parent | bbaa06702719818913ed686612d0db477b2b53b0 (diff) | |
| download | lwn-cf8c5009ee37d25cf4da0a250f3044ec6d1144a0.tar.gz lwn-cf8c5009ee37d25cf4da0a250f3044ec6d1144a0.zip | |
clockevents/drivers/arm_arch_timer: Implement ->set_state_oneshot_stopped()
set_state_oneshot_stopped() is called by the clkevt core, when the next
event is required at an expiry time of 'KTIME_MAX'. This normally
happens with NO_HZ_{IDLE|FULL} in both LOWRES/HIGHRES modes.
This patch makes the clockevent device to stop on such an event, to
avoid spurious interrupts, as explained by: commit 8fff52fd5093
("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state").
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/arm_arch_timer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 7c567f0c87f5..f0dd9d42bc7b 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -274,10 +274,12 @@ static void __arch_timer_setup(unsigned type, if (arch_timer_use_virtual) { clk->irq = arch_timer_ppi[VIRT_PPI]; clk->set_state_shutdown = arch_timer_shutdown_virt; + clk->set_state_oneshot_stopped = arch_timer_shutdown_virt; clk->set_next_event = arch_timer_set_next_event_virt; } else { clk->irq = arch_timer_ppi[PHYS_SECURE_PPI]; clk->set_state_shutdown = arch_timer_shutdown_phys; + clk->set_state_oneshot_stopped = arch_timer_shutdown_phys; clk->set_next_event = arch_timer_set_next_event_phys; } } else { @@ -287,10 +289,12 @@ static void __arch_timer_setup(unsigned type, clk->cpumask = cpu_all_mask; if (arch_timer_mem_use_virtual) { clk->set_state_shutdown = arch_timer_shutdown_virt_mem; + clk->set_state_oneshot_stopped = arch_timer_shutdown_virt_mem; clk->set_next_event = arch_timer_set_next_event_virt_mem; } else { clk->set_state_shutdown = arch_timer_shutdown_phys_mem; + clk->set_state_oneshot_stopped = arch_timer_shutdown_phys_mem; clk->set_next_event = arch_timer_set_next_event_phys_mem; } |