From: Thomas Gleixner <tglx@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
mingo@kernel.org, linux-kernel@vger.kernel.org,
torvalds@linux-foundation.org, fweisbec@gmail.com,
oleg@redhat.com, umgwanakikbuti@gmail.com
Subject: Re: [PATCH v2 01/12] sched: Simplify INIT_PREEMPT_COUNT
Date: Wed, 30 Sep 2015 22:39:59 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.11.1509302239420.4500@nanos> (raw)
In-Reply-To: <20150930050421.0268a360@gandalf.local.home>
On Wed, 30 Sep 2015, Steven Rostedt wrote:
> > /*
> > - * Disable preemption until the scheduler is running.
> > - * Reset by start_kernel()->sched_init()->init_idle().
> > + * Disable preemption until the scheduler is running -- use an unconditional
> > + * value so that it also works on !PREEMPT_COUNT kernels.
> > *
> > - * We include PREEMPT_ACTIVE to avoid cond_resched() from working
> > - * before the scheduler is active -- see should_resched().
> > + * Reset by start_kernel()->sched_init()->init_idle().
>
> Reset by start_kernel()->sched_init()->init_idle()->init_idle_preempt_count().
>
> Other than that.
>
> Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
next prev parent reply other threads:[~2015-09-30 20:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 7:10 [PATCH v2 00/12] sched: Killing PREEMPT_ACTIVE Peter Zijlstra
2015-09-30 7:10 ` [PATCH v2 01/12] sched: Simplify INIT_PREEMPT_COUNT Peter Zijlstra
2015-09-30 9:04 ` Steven Rostedt
2015-09-30 20:39 ` Thomas Gleixner [this message]
2015-10-01 13:25 ` Frederic Weisbecker
2015-09-30 7:10 ` [PATCH v2 02/12] sched: Rework TASK_DEAD preemption exception Peter Zijlstra
2015-09-30 7:10 ` [PATCH v2 03/12] sched: Create preempt_count invariant Peter Zijlstra
2015-09-30 9:32 ` Steven Rostedt
2015-09-30 11:13 ` Peter Zijlstra
2015-09-30 13:36 ` Steven Rostedt
2015-09-30 7:10 ` [PATCH v2 04/12] sched: Add preempt argument to __schedule() Peter Zijlstra
2015-09-30 7:10 ` [PATCH v2 05/12] sched: Fix trace_sched_switch() Peter Zijlstra
2015-09-30 7:10 ` [PATCH v2 06/12] sched: Stop setting PREEMPT_ACTIVE Peter Zijlstra
2015-10-01 15:27 ` Frederic Weisbecker
2015-09-30 7:10 ` [PATCH v2 07/12] sched: Robustify preemption leak checks Peter Zijlstra
2015-09-30 9:35 ` Steven Rostedt
2015-09-30 7:10 ` [PATCH v2 08/12] sched: Simplify preempt_count tests Peter Zijlstra
2015-10-01 15:31 ` Frederic Weisbecker
2015-09-30 7:10 ` [PATCH v2 09/12] sched, x86: Kill saved_preempt_count Peter Zijlstra
2015-10-01 15:40 ` Frederic Weisbecker
2015-09-30 7:10 ` [PATCH v2 10/12] sched: Kill PREEMPT_ACTIVE Peter Zijlstra
2015-10-01 15:41 ` Frederic Weisbecker
2015-09-30 7:10 ` [PATCH v2 11/12] sched: More notrace Peter Zijlstra
2015-09-30 7:10 ` [PATCH v2 12/12] sched: Add preempt_count invariant check Peter Zijlstra
2015-09-30 9:38 ` Steven Rostedt
2015-09-30 11:15 ` Peter Zijlstra
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