From: Steven Rostedt <rostedt@goodmis.org>
To: Qais Yousef <qais.yousef@arm.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Pavan Kondeti <pkondeti@codeaurora.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] sched/rt: cpupri_find: implement fallback mechanism for !fit case
Date: Tue, 18 Feb 2020 13:03:00 -0500 [thread overview]
Message-ID: <20200218130300.679f77ea@gandalf.local.home> (raw)
In-Reply-To: <20200218172745.hd7fxjqnzqkhfqx3@e107158-lin.cambridge.arm.com>
On Tue, 18 Feb 2020 17:27:46 +0000
Qais Yousef <qais.yousef@arm.com> wrote:
> > If we are going to use static branches, then lets just remove the
> > parameter totally. That is, make two functions (with helpers), where
> > one needs this fitness function the other does not.
> >
> > if (static_branch_unlikely(&sched_asym_cpu_capacity))
> > ret = cpupri_find_fitness(...);
> > else
> > ret = cpupri_find(...);
> >
> > if (!ret)
> > return -1;
> >
> > Something like that?
>
> Is there any implication on code generation here?
>
> I like my flavour better tbh. But I don't mind refactoring the function out if
> it does make it more readable.
I just figured we remove the passing of the parameter (which does make
an impact on the code generation).
Also, perhaps it would be better to not have to pass functions to the
cpupri_find(). Is there any other function that needs to be past, or
just this one in this series?
-- Steve
next prev parent reply other threads:[~2020-02-18 18:03 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 16:39 [PATCH 0/3] RT Capacity Awareness Improvements Qais Yousef
2020-02-14 16:39 ` [PATCH 1/3] sched/rt: cpupri_find: implement fallback mechanism for !fit case Qais Yousef
2020-02-17 17:07 ` Valentin Schneider
2020-02-17 23:34 ` Qais Yousef
2020-02-18 10:01 ` Valentin Schneider
2020-02-17 19:09 ` Dietmar Eggemann
2020-02-17 23:45 ` Qais Yousef
2020-02-18 9:53 ` Dietmar Eggemann
2020-02-18 17:28 ` Qais Yousef
2020-02-18 16:46 ` Steven Rostedt
2020-02-18 17:27 ` Qais Yousef
2020-02-18 18:03 ` Steven Rostedt [this message]
2020-02-18 18:52 ` Qais Yousef
2020-02-14 16:39 ` [PATCH 2/3] sched/rt: allow pulling unfitting task Qais Yousef
2020-02-17 9:10 ` Pavan Kondeti
2020-02-17 11:20 ` Qais Yousef
2020-02-19 13:43 ` Qais Yousef
2020-02-21 8:07 ` Pavan Kondeti
2020-02-21 11:08 ` Qais Yousef
2020-02-14 16:39 ` [PATCH 3/3] sched/rt: fix pushing unfit tasks to a better CPU Qais Yousef
2020-02-17 9:23 ` Pavan Kondeti
2020-02-17 13:53 ` Qais Yousef
2020-02-18 4:16 ` Pavan Kondeti
2020-02-18 17:47 ` Qais Yousef
2020-02-19 2:46 ` Pavan Kondeti
2020-02-19 10:46 ` Qais Yousef
2020-02-19 14:02 ` Qais Yousef
2020-02-21 8:15 ` Pavan Kondeti
2020-02-21 11:12 ` Qais Yousef
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