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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,
	linux-api@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>
Subject: Re: [PATCH v8 06/16] sched/core: uclamp: Extend sched_setattr() to support utilization clamping
Date: Thu, 9 May 2019 10:23:47 +0100	[thread overview]
Message-ID: <20190509092347.2ny2kb74hrea323v@e110439-lin> (raw)
In-Reply-To: <20190508194107.GE32547@worktop.programming.kicks-ass.net>

On 08-May 21:41, Peter Zijlstra wrote:
> On Tue, Apr 02, 2019 at 11:41:42AM +0100, Patrick Bellasi wrote:
> > @@ -1056,6 +1100,13 @@ static void __init init_uclamp(void)
> >  #else /* CONFIG_UCLAMP_TASK */
> >  static inline void uclamp_rq_inc(struct rq *rq, struct task_struct *p) { }
> >  static inline void uclamp_rq_dec(struct rq *rq, struct task_struct *p) { }
> > +static inline int uclamp_validate(struct task_struct *p,
> > +				  const struct sched_attr *attr)
> > +{
> > +	return -ENODEV;
> 
> Does that maybe want to be -EOPNOTSUPP ?

Suren propose ENOSYS for another similar case, i.e.
!CONFIG_UCLAMP_TASK definitions.

But EOPNOTSUPP seems more appropriate to me too.

-- 
#include <best/regards.h>

Patrick Bellasi

  reply	other threads:[~2019-05-09  9:23 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-02 10:41 [PATCH v8 00/16] Add utilization clamping support Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 01/16] sched/core: uclamp: Add CPU's clamp buckets refcounting Patrick Bellasi
2019-04-06 23:51   ` Suren Baghdasaryan
2019-04-08 11:49     ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 02/16] sched/core: Add bucket local max tracking Patrick Bellasi
2019-04-15 14:51   ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 03/16] sched/core: uclamp: Enforce last task's UCLAMP_MAX Patrick Bellasi
2019-04-17 20:36   ` Suren Baghdasaryan
2019-05-07 10:10     ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 04/16] sched/core: uclamp: Add system default clamps Patrick Bellasi
2019-04-18  0:51   ` Suren Baghdasaryan
2019-05-07 10:38     ` Patrick Bellasi
2019-05-08 18:42   ` Peter Zijlstra
2019-05-09  8:43     ` Patrick Bellasi
2019-05-08 19:00   ` Peter Zijlstra
2019-05-09  8:45     ` Patrick Bellasi
2019-05-08 19:07   ` Peter Zijlstra
2019-05-08 19:15     ` Peter Zijlstra
2019-05-09  9:10       ` Patrick Bellasi
2019-05-09 11:53         ` Peter Zijlstra
2019-05-09 13:04           ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 05/16] sched/core: Allow sched_setattr() to use the current policy Patrick Bellasi
2019-05-08 19:21   ` Peter Zijlstra
2019-05-09  9:18     ` Patrick Bellasi
2019-05-09 11:55       ` Peter Zijlstra
2019-05-09 14:59     ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 06/16] sched/core: uclamp: Extend sched_setattr() to support utilization clamping Patrick Bellasi
2019-04-17 22:26   ` Suren Baghdasaryan
2019-05-07 11:13     ` Patrick Bellasi
2019-05-08 19:44       ` Peter Zijlstra
2019-05-09  9:24         ` Patrick Bellasi
2019-05-08 19:41   ` Peter Zijlstra
2019-05-09  9:23     ` Patrick Bellasi [this message]
2019-04-02 10:41 ` [PATCH v8 07/16] sched/core: uclamp: Reset uclamp values on RESET_ON_FORK Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 08/16] sched/core: uclamp: Set default clamps for RT tasks Patrick Bellasi
2019-04-17 23:07   ` Suren Baghdasaryan
2019-05-07 11:25     ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 09/16] sched/cpufreq: uclamp: Add clamps for FAIR and " Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 10/16] sched/core: uclamp: Add uclamp_util_with() Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 11/16] sched/fair: uclamp: Add uclamp support to energy_compute() Patrick Bellasi
2019-05-09 12:51   ` Peter Zijlstra
2019-04-02 10:41 ` [PATCH v8 12/16] sched/core: uclamp: Extend CPU's cgroup controller Patrick Bellasi
2019-04-18  0:12   ` Suren Baghdasaryan
2019-05-07 11:42     ` Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 13/16] sched/core: uclamp: Propagate parent clamps Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 14/16] sched/core: uclamp: Propagate system defaults to root group Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 15/16] sched/core: uclamp: Use TG's clamps to restrict TASK's clamps Patrick Bellasi
2019-04-02 10:41 ` [PATCH v8 16/16] sched/core: uclamp: Update CPU's refcount on TG's clamp changes Patrick Bellasi
2019-05-09 13:02 ` [PATCH v8 00/16] Add utilization clamping support Peter Zijlstra
2019-05-09 13:09   ` Patrick Bellasi

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