Re: [PATCH] clocksource: dw_apb_timer: add dynamic irq flag to the timer

From: Daniel Lezcano
Date: Fri Jul 03 2015 - 10:58:51 EST


On 07/03/2015 04:30 PM, Jisheng Zhang wrote:
Commit d2348fb6fdc6 ("tick: Dynamically set broadcast irq affinity")
adds one excelent feature CLOCK_EVT_FEAT_DYNIRQ to let the core set the
interrupt affinity of the broadcast interrupt to the cpu which has the
earliest expiry time. This patch adds CLOCK_EVT_FEAT_DYNIRQ flag to
avoid unnecessary wakeups and IPIs when the dw_apb_timer is used as
broadcast timer.

Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
---

I am glad this flag helps. Were you able to do some measurements ?

--
<http://www.linaro.org/> Linaro.org â Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/