From: Viresh Kumar <viresh.kumar@linaro.org>
To: Leo Yan <leo.yan@linaro.org>
Cc: Brendan Jackman <brendan.jackman@arm.com>,
linaro-kernel@lists.linaro.org,
Rafael Wysocki <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Amit Kucheria <amit.kucheria@linaro.org>
Subject: Re: [PATCH] cpufreq: dt: Set default policy->transition_delay_ns
Date: Mon, 22 May 2017 16:57:27 +0530 [thread overview]
Message-ID: <20170522112727.GI6510@vireshk-i7> (raw)
In-Reply-To: <20170522111738.GB9325@leoy-ThinkPad-T440>
On 22-05-17, 19:17, Leo Yan wrote:
> This afternoon Amit pointed me for this patch, should fix as below?
> Otherwise it seems directly assign the same value from unit 'ns' to
> 'us' but without any value conversion.
>
> diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
> index 76877a6..dcc90fc 100644
> --- a/kernel/sched/cpufreq_schedutil.c
> +++ b/kernel/sched/cpufreq_schedutil.c
> @@ -538,7 +538,7 @@ static int sugov_init(struct cpufreq_policy *policy)
> unsigned int lat;
>
> tunables->rate_limit_us = LATENCY_MULTIPLIER;
> - lat = policy->cpuinfo.transition_latency / NSEC_PER_USEC;
> + lat = policy->cpuinfo.transition_latency / NSEC_PER_MSEC;
> if (lat)
> tunables->rate_limit_us *= lat;
> }
I will let Rafael comment in as well. NSEC_PER_USEC is used in the
earlier governors as well (ondemand/conservative) in exactly the same
way as schedutil is using.
--
viresh
next prev parent reply other threads:[~2017-05-22 11:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-22 5:10 [PATCH] cpufreq: dt: Set default policy->transition_delay_ns Viresh Kumar
2017-05-22 10:45 ` Brendan Jackman
2017-05-22 10:55 ` Viresh Kumar
2017-05-22 11:17 ` Leo Yan
2017-05-22 11:27 ` Viresh Kumar [this message]
2017-06-27 0:15 ` Rafael J. Wysocki
2017-06-27 4:20 ` Viresh Kumar
2017-06-27 16:08 ` Rafael J. Wysocki
2017-06-28 4:14 ` Viresh Kumar
2017-06-28 20:52 ` Rafael J. Wysocki
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