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From: Patrick Bellasi <patrick.bellasi@arm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	Ingo Molnar <mingo@redhat.com>, Tejun Heo <tj@kernel.org>,
	"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Paul Turner <pjt@google.com>,
	Quentin Perret <quentin.perret@arm.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Morten Rasmussen <morten.rasmussen@arm.com>,
	Juri Lelli <juri.lelli@redhat.com>, Todd Kjos <tkjos@google.com>,
	Joel Fernandes <joelaf@google.com>,
	Steve Muckle <smuckle@google.com>,
	Suren Baghdasaryan <surenb@google.com>,
	linux-api@vger.kernel.org
Subject: Re: [PATCH v5 02/15] sched/core: make sched_setattr able to tune the current policy
Date: Wed, 7 Nov 2018 13:50:39 +0000	[thread overview]
Message-ID: <20181107135039.GD14309@e110439-lin> (raw)
In-Reply-To: <20181107121126.GN9781@hirez.programming.kicks-ass.net>

On 07-Nov 13:11, Peter Zijlstra wrote:
> On Mon, Oct 29, 2018 at 06:32:56PM +0000, Patrick Bellasi wrote:
> 
> > @@ -50,11 +52,13 @@
> >  #define SCHED_FLAG_RESET_ON_FORK	0x01
> >  #define SCHED_FLAG_RECLAIM		0x02
> >  #define SCHED_FLAG_DL_OVERRUN		0x04
> > -#define SCHED_FLAG_UTIL_CLAMP		0x08
> > +#define SCHED_FLAG_TUNE_POLICY		0x08
> > +#define SCHED_FLAG_UTIL_CLAMP		0x10
> 
> That seems to suggest you want to do this patch first, but you didn't..

I've kept it here just to better highlight this change, suggested by
Juri, since we was not entirely sure you are fine with it...

If you think it's ok adding a SCHED_FLAG_TUNE_POLICY behavior to the
sched_setattr syscall, I can certainly squash into the previous patch,
which gives more context on why we need it.

Otherwise, if we want to keep these bits better isolated for possible
future bisects, I can also move it at the beginning of the series.

What do you like best ?

Since we are at that, are we supposed to document some{where,how}
these API changes ?

-- 
#include <best/regards.h>

Patrick Bellasi

  reply	other threads:[~2018-11-07 13:50 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-29 18:32 [PATCH v5 00/15] Add utilization clamping support Patrick Bellasi
2018-10-29 18:32 ` [PATCH v5 01/15] sched/core: uclamp: extend sched_setattr to support utilization clamping Patrick Bellasi
2018-10-29 19:33   ` Randy Dunlap
2018-11-07 12:09   ` Peter Zijlstra
2018-10-29 18:32 ` [PATCH v5 02/15] sched/core: make sched_setattr able to tune the current policy Patrick Bellasi
2018-11-07 12:11   ` Peter Zijlstra
2018-11-07 13:50     ` Patrick Bellasi [this message]
2018-11-07 13:58       ` Peter Zijlstra
2018-10-29 18:32 ` [PATCH v5 03/15] sched/core: uclamp: map TASK's clamp values into CPU's clamp groups Patrick Bellasi
2018-11-07 12:19   ` Peter Zijlstra
2018-11-07 14:19     ` Patrick Bellasi
2018-11-07 14:42       ` Peter Zijlstra
2018-11-07 14:56         ` Patrick Bellasi
2018-11-07 13:16   ` Peter Zijlstra
2018-11-07 13:57     ` Patrick Bellasi
2018-11-07 14:14       ` Peter Zijlstra
2018-11-07 13:35   ` Peter Zijlstra
2018-11-07 14:48     ` Patrick Bellasi
2018-11-07 14:55       ` Peter Zijlstra
2018-11-07 15:04         ` Patrick Bellasi
2018-11-07 13:44   ` Peter Zijlstra
2018-11-07 14:24     ` Patrick Bellasi
2018-11-07 14:44       ` Peter Zijlstra
2018-11-07 14:58         ` Patrick Bellasi
2018-11-07 14:37   ` Peter Zijlstra
2018-11-07 14:53     ` Patrick Bellasi
2018-10-29 18:32 ` [PATCH v5 04/15] sched/core: uclamp: add CPU's clamp groups accounting Patrick Bellasi
2018-10-29 18:42   ` Patrick Bellasi
2018-10-29 18:32 ` [PATCH v5 04/15] sched/core: uclamp: add CPU's clamp groups refcounting Patrick Bellasi
2018-11-11 16:47   ` Peter Zijlstra
2018-11-13 15:11     ` Patrick Bellasi
2018-11-22 14:20       ` Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 05/15] sched/core: uclamp: update CPU's refcount on clamp changes Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 06/15] sched/core: uclamp: enforce last task UCLAMP_MAX Patrick Bellasi
2018-11-11 17:08   ` Peter Zijlstra
2018-11-13 15:14     ` Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 07/15] sched/core: uclamp: add clamp group bucketing support Patrick Bellasi
2018-11-12  0:09   ` Peter Zijlstra
2018-11-13 15:29     ` Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 08/15] sched/core: uclamp: add system default clamps Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 09/15] sched/cpufreq: uclamp: add utilization clamping for FAIR tasks Patrick Bellasi
2018-11-07 11:38   ` Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 10/15] sched/cpufreq: uclamp: add utilization clamping for RT tasks Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 11/15] sched/core: uclamp: extend CPU's cgroup controller Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 12/15] sched/core: uclamp: propagate parent clamps Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 13/15] sched/core: uclamp: map TG's clamp values into CPU's clamp groups Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 14/15] sched/core: uclamp: use TG's clamps to restrict Task's clamps Patrick Bellasi
2018-10-29 18:47   ` Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 14/15] sched/core: uclamp: use TG's clamps to restrict TASK's clamps Patrick Bellasi
2018-10-29 18:33 ` [PATCH v5 15/15] sched/core: uclamp: update CPU's refcount on TG's clamp changes Patrick Bellasi

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