From: rjw@rjwysocki.net (Rafael J. Wysocki)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend
Date: Thu, 17 Jul 2014 00:02:49 +0200 [thread overview]
Message-ID: <16164926.ZsJxe6UV3e@vostro.rjw.lan> (raw)
In-Reply-To: <1404959850-11617-1-git-send-email-skannan@codeaurora.org>
On Wednesday, July 09, 2014 07:37:30 PM Saravana Kannan wrote:
> Preliminary patch. Not tested. Just sending out to give an idea of what I'm
> looking to do. Expect a lot more simplification when it's done.
>
> Benefits:
> * A lot more simpler code.
> * Less stability issues.
> * Suspend/resume time would improve.
> * Hotplug time would improve.
> * Sysfs file permissions would be maintained.
> * More policy settings would be maintained across suspend/resume.
> * cpufreq stats would be maintained across hotplug for all CPUs.
One problem. The real hotplug (when the CPU actually goes away) depends on
offline removing all that stuff for it. How are you going to address that?
Rafael
next prev parent reply other threads:[~2014-07-16 22:02 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-10 2:37 [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend Saravana Kannan
2014-07-11 4:18 ` [PATCH v2] " Saravana Kannan
2014-07-11 6:19 ` Viresh Kumar
2014-07-11 9:59 ` skannan at codeaurora.org
2014-07-11 10:07 ` skannan at codeaurora.org
2014-07-11 10:52 ` Viresh Kumar
2014-07-12 2:44 ` Saravana Kannan
2014-07-14 6:09 ` Viresh Kumar
2014-07-14 19:08 ` Saravana Kannan
2014-07-15 4:35 ` Viresh Kumar
2014-07-15 5:36 ` Saravana Kannan
2014-07-15 5:52 ` Viresh Kumar
2014-07-15 6:58 ` Srivatsa S. Bhat
2014-07-15 17:35 ` skannan at codeaurora.org
2014-07-16 7:44 ` Srivatsa S. Bhat
2014-07-16 5:44 ` Viresh Kumar
2014-07-16 7:49 ` Srivatsa S. Bhat
2014-07-12 3:06 ` Saravana Kannan
2014-07-14 6:13 ` Viresh Kumar
2014-07-14 19:10 ` Saravana Kannan
2014-07-11 7:43 ` Srivatsa S. Bhat
2014-07-11 10:02 ` skannan at codeaurora.org
2014-07-15 22:47 ` [PATCH v3 0/2] Simplify hotplug/suspend handling Saravana Kannan
2014-07-15 22:47 ` [PATCH v3 1/2] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend Saravana Kannan
2014-07-16 0:28 ` Saravana Kannan
2014-07-16 8:30 ` Viresh Kumar
2014-07-16 19:19 ` Saravana Kannan
2014-07-16 8:24 ` Viresh Kumar
2014-07-16 11:16 ` Srivatsa S. Bhat
2014-07-16 13:13 ` Viresh Kumar
2014-07-16 18:04 ` Srivatsa S. Bhat
2014-07-16 19:56 ` Saravana Kannan
2014-07-17 5:51 ` Viresh Kumar
2014-07-16 19:56 ` Saravana Kannan
2014-07-17 5:35 ` Viresh Kumar
2014-07-18 3:25 ` Saravana Kannan
2014-07-18 4:19 ` Viresh Kumar
2014-07-16 20:25 ` Saravana Kannan
2014-07-16 21:45 ` Saravana Kannan
2014-07-17 6:24 ` Viresh Kumar
2014-07-16 14:29 ` Dirk Brandewie
2014-07-16 15:28 ` Viresh Kumar
2014-07-16 19:42 ` Saravana Kannan
2014-07-15 22:47 ` [PATCH v3 2/2] cpufreq: Simplify and fix mutual exclusion with hotplug Saravana Kannan
2014-07-16 8:48 ` Viresh Kumar
2014-07-16 19:34 ` Saravana Kannan
2014-07-25 1:07 ` [PATCH v4 0/5] Simplify hotplug/suspend handling Saravana Kannan
2014-07-25 1:07 ` [PATCH v4 1/5] cpufreq: Don't wait for CPU to going offline to restart governor Saravana Kannan
2014-07-31 20:47 ` Saravana Kannan
2014-07-25 1:07 ` [PATCH v4 2/5] cpufreq: Keep track of which CPU owns the kobj/sysfs nodes separately Saravana Kannan
2014-08-07 9:02 ` Viresh Kumar
2014-07-25 1:07 ` [PATCH v4 3/5] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend Saravana Kannan
2014-07-31 21:56 ` Rafael J. Wysocki
2014-07-31 22:15 ` Saravana Kannan
2014-07-31 23:48 ` Saravana Kannan
2014-08-07 10:51 ` Viresh Kumar
2014-08-12 9:17 ` Viresh Kumar
2014-08-07 10:48 ` Viresh Kumar
2014-08-11 22:13 ` Saravana Kannan
2014-08-12 8:51 ` Viresh Kumar
2014-07-25 1:07 ` [PATCH v4 4/5] cpufreq: Properly handle physical CPU hot-add/hot-remove Saravana Kannan
2014-08-07 11:02 ` Viresh Kumar
2014-08-11 22:15 ` Saravana Kannan
2014-07-25 1:07 ` [PATCH v4 5/5] cpufreq: Delete dead code related to policy save/restore Saravana Kannan
2014-08-07 11:06 ` Viresh Kumar
2014-07-29 5:52 ` [PATCH v4 0/5] Simplify hotplug/suspend handling skannan at codeaurora.org
2014-07-30 0:29 ` Rafael J. Wysocki
2014-07-31 20:25 ` Saravana Kannan
2014-08-07 6:04 ` skannan at codeaurora.org
2014-10-16 8:53 ` Viresh Kumar
2014-10-23 21:41 ` Saravana Kannan
2014-07-16 22:02 ` Rafael J. Wysocki [this message]
2014-07-16 22:35 ` [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend Saravana Kannan
2014-07-24 3:02 ` Saravana Kannan
2014-07-24 5:04 ` Viresh Kumar
2014-07-24 9:12 ` skannan at codeaurora.org
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