From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <bitbucket@online.de>, Peter Anvin <hpa@zytor.com>,
Andi Kleen <ak@linux.intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] per-cpu preempt_count
Date: Tue, 13 Aug 2013 18:26:02 +0200 [thread overview]
Message-ID: <20130813162602.GC24092@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20130813155637.GA5280@gmail.com>
On Tue, Aug 13, 2013 at 05:56:37PM +0200, Ingo Molnar wrote:
> PREEMPT_NEED_RESCHED could be made the high bit - or maybe an even simpler
> solution is to invert its meaning: making '0' the "it needs to resched!"
> case, so the check would be decl+jz?
Right, inverted NEED_RESCHED would work.
next prev parent reply other threads:[~2013-08-13 16:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-12 11:51 [RFC] per-cpu preempt_count Peter Zijlstra
2013-08-12 17:35 ` Linus Torvalds
2013-08-12 17:51 ` H. Peter Anvin
2013-08-12 18:53 ` Linus Torvalds
2013-08-13 8:39 ` Peter Zijlstra
2013-08-12 17:58 ` Ingo Molnar
2013-08-12 19:00 ` Linus Torvalds
2013-08-12 20:44 ` H. Peter Anvin
2013-08-13 10:30 ` Ingo Molnar
2013-08-13 12:26 ` Peter Zijlstra
2013-08-13 15:39 ` Linus Torvalds
2013-08-13 15:56 ` Ingo Molnar
2013-08-13 16:26 ` Peter Zijlstra [this message]
2013-08-13 16:28 ` H. Peter Anvin
2013-08-13 16:29 ` Peter Zijlstra
2013-08-13 16:38 ` Linus Torvalds
2013-08-18 17:57 ` Paul E. McKenney
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