From: Viresh Kumar <viresh.kumar@linaro.org>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
sboyd@codeaurora.org, prarit@redhat.com, skannan@codeaurora.org,
Srivatsa Bhat <srivatsa@mit.edu>
Subject: Re: [PATCH V3 07/14] cpufreq: Don't allow updating inactive-policies from sysfs
Date: Sat, 16 May 2015 07:31:46 +0530 [thread overview]
Message-ID: <20150516020146.GD4600@linux> (raw)
In-Reply-To: <2674706.qWzjVNUKcn@vostro.rjw.lan>
On 16-05-15, 03:10, Rafael J. Wysocki wrote:
> The dash after "inactive" in the subject is not necessary IMO.
Okay
> On Friday, May 08, 2015 11:53:50 AM Viresh Kumar wrote:
> > + /*
> > + * Policy might not be active currently, and so we shouldn't try
> > + * updating any values here. policy->cpus is cleared for inactive policy
> > + * and so cpufreq_cpu_get_raw() should fail.
>
> These comments don't really clarify things. It'd be better to say something
> like "Updating inactive policies is invalid, so avoid doing that."
Okay..
> > + */
> > + if (unlikely(policy_is_inactive(policy))) {
> > + ret = -EPERM;
>
> This doesn't seem to be the appropriate error code to return here.
>
> -EBUSY or -EAGAIN would be better IMO.
Okay
--
viresh
next prev parent reply other threads:[~2015-05-16 2:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 6:23 [PATCH V3 00/14] cpufreq: Don't loose cpufreq history on CPU hotplug Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 01/14] cpufreq: Create for_each_{in}active_policy() Viresh Kumar
2015-05-08 21:46 ` Rafael J. Wysocki
2015-05-09 2:27 ` Viresh Kumar
2015-05-12 6:04 ` Viresh Kumar
2015-05-12 6:50 ` [PATCH V4 " Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 02/14] cpufreq: Don't clear cpufreq_cpu_data and policy list for inactive policies Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 03/14] cpufreq: Get rid of cpufreq_cpu_data_fallback Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 04/14] cpufreq: Don't traverse all active policies to find policy for a cpu Viresh Kumar
2015-05-12 6:52 ` [PATCH V4 " Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 05/14] cpufreq: Manage governor usage history with 'policy->last_governor' Viresh Kumar
2015-05-12 6:52 ` [PATCH V4 " Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 06/14] cpufreq: Mark policy->governor = NULL for inactive policies Viresh Kumar
2015-05-12 6:52 ` [PATCH V4 " Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 07/14] cpufreq: Don't allow updating inactive-policies from sysfs Viresh Kumar
2015-05-16 1:10 ` Rafael J. Wysocki
2015-05-16 2:01 ` Viresh Kumar [this message]
2015-05-08 6:23 ` [PATCH V3 08/14] cpufreq: Track cpu managing sysfs kobjects separately Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 09/14] cpufreq: Stop migrating sysfs files on hotplug Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 10/14] cpufreq: Remove cpufreq_update_policy() Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 11/14] cpufreq: Initialize policy->kobj while allocating policy Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 12/14] cpufreq: Call cpufreq_policy_put_kobj() from cpufreq_policy_free() Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 13/14] cpufreq: Restart governor as soon as possible Viresh Kumar
2015-05-08 6:23 ` [PATCH V3 14/14] cpufreq: Add support for physical hoplug of CPUs Viresh Kumar
2015-05-16 1:18 ` Rafael J. Wysocki
2015-05-16 2:13 ` Viresh Kumar
2015-05-18 0:30 ` Rafael J. Wysocki
2015-05-18 2:11 ` Viresh Kumar
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