From: Ingo Molnar <mingo@kernel.org>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Peter Zijlstra <peterz@infradead.org>,
Linux PM list <linux-pm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Subject: Re: [PATCH 0/2] cpuidle optimizations (on top of linux-next)
Date: Tue, 19 Jan 2016 14:28:58 +0100 [thread overview]
Message-ID: <20160119132858.GA32559@gmail.com> (raw)
In-Reply-To: <CAJZ5v0hgKfpi2PDbzk5Rvnio1vC3onaWkJ-2ccg5KAd=r3qPBA@mail.gmail.com>
* Rafael J. Wysocki <rafael@kernel.org> wrote:
> On Tue, Jan 19, 2016 at 8:28 AM, Ingo Molnar <mingo@kernel.org> wrote:
> >
> > * Sudeep Holla <sudeep.holla@arm.com> wrote:
> >
> >> On 15/01/16 23:53, Rafael J. Wysocki wrote:
> >> >Hi,
> >> >
> >> >When I was looking at the cpuidle code after the Sudeeps's problem report,
> >> >it occured to me that we had some pointless overhead there, so two
> >> >changes to reduce it follow.
> >> >
> >> >[1/2] Make the fallback to to default_idle_call() in call_cpuidle()
> >> > unnecessary and drop it.
> >> >[2/2] Make menu_select() avoid checking states that don't need to
> >> > (or even shouldn't) be checked when making the selection.
> >> >
> >>
> >> Tested-by: Sudeep Holla <sudeep.holla@arm.com>
> >
> > Rafael, can I pick these up into the scheduler tree?
>
> They won't apply at this point as one commit they depend on is in my
> linux-next branch waiting for the next push.
>
> Would it be a problem if they went in through the PM tree instead?
Absolutely no problem:
Acked-by: Ingo Molnar <mingo@kernel.org>
Thanks,
Ingo
next prev parent reply other threads:[~2016-01-19 13:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-15 23:53 [PATCH 0/2] cpuidle optimizations (on top of linux-next) Rafael J. Wysocki
2016-01-15 23:54 ` [PATCH 1/2] sched / idle: Drop default_idle_call() fallback from call_cpuidle() Rafael J. Wysocki
2016-01-18 14:36 ` Peter Zijlstra
2016-01-15 23:56 ` [PATCH 2/2] cpuidle: menu: Avoid pointless checks in menu_select() Rafael J. Wysocki
2016-01-18 22:51 ` [Resend][PATCH " Rafael J. Wysocki
2016-01-18 13:45 ` [PATCH 0/2] cpuidle optimizations (on top of linux-next) Sudeep Holla
2016-01-19 7:28 ` Ingo Molnar
2016-01-19 13:14 ` Rafael J. Wysocki
2016-01-19 13:28 ` Ingo Molnar [this message]
2016-01-19 13:50 ` Rafael J. Wysocki
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