From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Clark Williams <williams@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
stable-rt@vger.kernel.org
Subject: Re: [PATCH RT] sched: Do not clear PF_NO_SETAFFINITY flag in select_fallback_rq()
Date: Tue, 17 Feb 2015 10:37:26 +0100 [thread overview]
Message-ID: <20150217093726.GD26177@linutronix.de> (raw)
In-Reply-To: <20140701111444.0cfebaa1@gandalf.local.home>
* Steven Rostedt | 2014-07-01 11:14:44 [-0400]:
>I talked with Peter Zijlstra about this, and he told me that the clearing
>of the PF_NO_SETAFFINITY flag was to deal with the optimization of
>migrate_disable/enable() that ignores tasks that have that flag set. But
>that optimization was removed when I did a rework of the cpu hotplug code.
This has been already applied. You took it into v3.14 and while applying
the latest v3.14 patches it made its way into v3.18 as well.
Sebastian
prev parent reply other threads:[~2015-02-17 9:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-01 15:14 [PATCH RT] sched: Do not clear PF_NO_SETAFFINITY flag in select_fallback_rq() Steven Rostedt
2015-02-17 9:37 ` Sebastian Andrzej Siewior [this message]
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