From: Mike Galbraith <umgwanakikbuti@gmail.com>
To: Wanpeng Li <kernellwp@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Yuyang Du <yuyang.du@intel.com>, Ingo Molnar <mingo@kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Benjamin Segall <bsegall@google.com>,
Paul Turner <pjt@google.com>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Matt Fleming <matt@codeblueprint.co.uk>,
Vincent Guittot <vincent.guittot@linaro.org>
Subject: Re: [PATCH 4/4] sched,fair: Fix PELT integrity for new tasks
Date: Mon, 01 Aug 2016 13:52:28 +0200 [thread overview]
Message-ID: <1470052348.5903.6.camel@gmail.com> (raw)
In-Reply-To: <CANRm+CyCPpV2qbydP76fNWyRxUL-eZvr=i=oRUL1pb74ymPB0Q@mail.gmail.com>
On Mon, 2016-08-01 at 17:56 +0800, Wanpeng Li wrote:
> 2016-08-01 17:31 GMT+08:00 Mike Galbraith <umgwanakikbuti@gmail.com>:
> > On Mon, 2016-08-01 at 15:30 +0800, Wanpeng Li wrote:
> >
> > > What's the meaning of "the task is hashed before we call
> > > wake_up_new_task()"?
> >
> > See fork.c::copy_process()
> >
> > /*
> > * Make it visible to the rest of the system, but dont wake
> > it up yet.
> > * Need tasklist lock for parent etc handling!
> > */
> > write_lock_irq(&tasklist_lock);
> > ....
>
> Thanks Mike, so here "is hashed" means that add to list instead of
> real hashing.
Yeah.
-Mike
prev parent reply other threads:[~2016-08-01 11:57 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 12:01 [PATCH 0/4] sched/fair: Fix PELT wobblies Peter Zijlstra
2016-06-17 12:01 ` [PATCH 1/4] sched: Optimize fork() paths Peter Zijlstra
2016-06-17 12:01 ` [PATCH 2/4] sched/fair: Fix PELT integrity for new groups Peter Zijlstra
2016-06-17 13:51 ` Vincent Guittot
2016-06-17 12:01 ` [PATCH 3/4] sched,cgroup: Fix cpu_cgroup_fork() Peter Zijlstra
2016-06-17 13:58 ` Vincent Guittot
2016-06-17 14:06 ` Peter Zijlstra
2016-06-17 12:01 ` [PATCH 4/4] sched,fair: Fix PELT integrity for new tasks Peter Zijlstra
2016-06-17 14:09 ` Vincent Guittot
2016-06-17 14:28 ` Peter Zijlstra
2016-06-17 16:02 ` Peter Zijlstra
2016-06-17 16:14 ` Vincent Guittot
2016-06-17 16:18 ` Peter Zijlstra
2016-06-19 22:55 ` Yuyang Du
2016-06-20 9:23 ` Vincent Guittot
2016-06-20 9:52 ` Peter Zijlstra
2016-06-20 10:07 ` Vincent Guittot
2016-06-21 11:43 ` Peter Zijlstra
2016-06-21 12:36 ` Vincent Guittot
2016-06-21 12:47 ` Peter Zijlstra
2016-06-21 12:56 ` Vincent Guittot
2016-06-20 11:35 ` Dietmar Eggemann
2016-06-20 12:35 ` Vincent Guittot
2016-06-20 14:49 ` Dietmar Eggemann
2016-06-21 8:41 ` Peter Zijlstra
2016-06-21 4:51 ` Yuyang Du
2016-06-24 13:03 ` Peter Zijlstra
2016-08-09 23:19 ` Yuyang Du
2016-06-21 13:17 ` Peter Zijlstra
2016-06-21 13:29 ` Vincent Guittot
2016-06-22 11:46 ` Peter Zijlstra
2016-06-23 15:35 ` Dietmar Eggemann
2016-06-23 17:15 ` Peter Zijlstra
2016-06-20 14:27 ` Peter Zijlstra
2016-06-23 11:19 ` Peter Zijlstra
2016-08-01 7:30 ` Wanpeng Li
2016-08-01 9:31 ` Mike Galbraith
2016-08-01 9:56 ` Wanpeng Li
2016-08-01 11:52 ` Mike Galbraith [this message]
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