From: David Miller <davem@davemloft.net>
To: paulus@samba.org
Cc: mingo@elte.hu, a.p.zijlstra@chello.nl, cfriesen@nortel.com,
tglx@linutronix.de, rostedt@goodmis.org, linuxppc-dev@ozlabs.org,
netdev@vger.kernel.org
Subject: Re: question about softirqs
Date: Tue, 12 May 2009 22:28:48 -0700 (PDT) [thread overview]
Message-ID: <20090512.222848.152842353.davem@davemloft.net> (raw)
In-Reply-To: <18954.22390.754419.803434@cargo.ozlabs.ibm.com>
From: Paul Mackerras <paulus@samba.org>
Date: Wed, 13 May 2009 15:15:34 +1000
> David Miller writes:
>
>> I fully expected us to be, at this point, talking about putting the
>> pending softirq check back into the trap return path :-/
>
> Would that actually do any good, in the case where the system has
> decided that ksoftirqd is handling soft irqs at the moment?
Even if ksoftirqd is running, we check and run pending softirqs from
trap return.
Sure, I imagine we could re-enter this "ksoftirq blocked by highprio
thread" situation if we get flooded every single time over and over
again.
next prev parent reply other threads:[~2009-05-13 5:28 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <18948.63755.279732.294842@cargo.ozlabs.ibm.com>
[not found] ` <20090508.234815.127227651.davem@davemloft.net>
[not found] ` <4A086DB2.8040703@nortel.com>
[not found] ` <20090511.162436.193717082.davem@davemloft.net>
2009-05-12 0:43 ` question about softirqs Chris Friesen
2009-05-12 8:12 ` Ingo Molnar
2009-05-12 9:12 ` Peter Zijlstra
2009-05-12 9:23 ` Ingo Molnar
2009-05-12 9:32 ` Peter Zijlstra
2009-05-12 12:20 ` Steven Rostedt
2009-05-13 4:45 ` David Miller
2009-05-13 4:44 ` David Miller
2009-05-13 5:15 ` Paul Mackerras
2009-05-13 5:28 ` David Miller [this message]
2009-05-13 5:55 ` Evgeniy Polyakov
2009-05-12 15:18 ` Chris Friesen
2009-05-13 8:34 ` Andi Kleen
2009-05-13 13:23 ` Chris Friesen
2009-05-13 14:15 ` Andi Kleen
2009-05-13 14:17 ` Thomas Gleixner
2009-05-13 14:24 ` Andi Kleen
2009-05-13 14:54 ` Eric Dumazet
2009-05-13 15:02 ` Andi Kleen
2009-05-13 15:05 ` Chris Friesen
2009-05-13 15:54 ` Thomas Gleixner
2009-05-13 16:10 ` Chris Friesen
2009-05-13 17:01 ` Andi Kleen
2009-05-13 19:04 ` Chris Friesen
2009-05-13 19:13 ` Andi Kleen
2009-05-13 19:44 ` Chris Friesen
2009-05-13 19:53 ` Andi Kleen
2009-05-13 20:55 ` Thomas Gleixner
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