From: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
To: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
Cc: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Leon Woestenberg
<leon.woestenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mark Brown
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
Sven-Thorsten Dietrich
<sven-IsH+rWyeNGyzjR9+/8zPv5owlv4uC7bZ@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
rt-users <linux-rt-users-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Ben Dooks (embedded platforms)"
<ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: yield() in i2c non-happy paths hits BUG under -rt patch
Date: Thu, 19 Nov 2009 12:59:06 +0000 [thread overview]
Message-ID: <20091119125906.6ad00edd@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20091119130526.23a69b85-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
> Well, I guess only people monitoring system latency would notice, as
> this is the only thing yield() was supposed to help with in the first
> place.
if (need_resched())
schedule();
will make non-rt tasks act politely at the right moments. RT tasks will
likely immediately get to take the CPU again depending upon the
scheduling parameters in use.
next prev parent reply other threads:[~2009-11-19 12:59 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-07 19:01 yield() in i2c non-happy paths hits BUG under -rt patch Leon Woestenberg
[not found] ` <c384c5ea0911071101u7415d37o2611c542e5fae309-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-11-07 20:01 ` Jean Delvare
[not found] ` <20091107210147.3e754278-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2009-11-08 18:57 ` Sven-Thorsten Dietrich
[not found] ` <4AF7148C.9090706-IsH+rWyeNGyzjR9+/8zPv5owlv4uC7bZ@public.gmane.org>
2009-11-12 20:12 ` Jean Delvare
2009-11-13 22:03 ` Thomas Gleixner
2009-11-14 18:02 ` Jean Delvare
[not found] ` <alpine.LFD.2.00.0911132139560.24119-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-11-16 15:56 ` Mark Brown
[not found] ` <20091116155606.GC29479-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2009-11-18 0:50 ` Leon Woestenberg
2009-11-18 1:05 ` Alan Cox
[not found] ` <20091118010520.4cd397d4-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2009-11-18 16:28 ` Leon Woestenberg
2009-11-18 16:52 ` Jean Delvare
[not found] ` <20091118175202.490989d8-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2009-11-18 20:36 ` Thomas Gleixner
2009-11-19 12:05 ` Jean Delvare
[not found] ` <20091119130526.23a69b85-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2009-11-19 12:59 ` Alan Cox [this message]
[not found] ` <20091119125906.6ad00edd-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2009-11-19 13:06 ` Peter Zijlstra
2009-11-19 14:00 ` Jean Delvare
2009-11-19 14:15 ` Peter Zijlstra
2009-11-19 13:11 ` Thomas Gleixner
2009-11-19 13:21 ` Peter Zijlstra
2009-11-19 13:22 ` Thomas Gleixner
2009-11-19 13:18 ` Peter Zijlstra
2009-11-18 20:46 ` [PATCH] cleanup sched_yield (sys)call nesting Sven-Thorsten Dietrich
[not found] ` <1258577194.12429.86.camel-ZUMNgey8dAdBci4yedNfAfz91O0DMRRp0E9HWUfgJXw@public.gmane.org>
2009-11-18 20:56 ` Thomas Gleixner
[not found] ` <alpine.LFD.2.00.0911182153010.24119-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-11-18 21:04 ` Sven-Thorsten Dietrich
2009-11-18 21:34 ` Thomas Gleixner
[not found] ` <alpine.LFD.2.00.0911182233510.24119-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-11-19 4:48 ` Sven-Thorsten Dietrich
[not found] ` <1258606116.25022.57.camel-ZUMNgey8dAdBci4yedNfAfz91O0DMRRp0E9HWUfgJXw@public.gmane.org>
2009-11-19 10:36 ` Thomas Gleixner
2009-11-19 3:20 ` Ingo Molnar
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