From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Jones <davej@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: scheduling while atomic & hang.
Date: Thu, 04 Jul 2013 11:08:37 -0700 [thread overview]
Message-ID: <51D5BA25.9060207@zytor.com> (raw)
In-Reply-To: <CA+55aFykwkTVtZuoCEvwpF+5q1LUscw1shkWNPtGdHu+1DgDJA@mail.gmail.com>
On 07/03/2013 07:49 PM, Linus Torvalds wrote:
>> [<ffffffff816f42bf>] __schedule+0x94f/0x9c0
>> [<ffffffff816f487e>] schedule_user+0x2e/0x70
>> [<ffffffff816f6de4>] retint_careful+0x12/0x2e
This call trace does indeed indicate that we took a hardware interrupt
which caused a reschedule. It doesn't necessarily have to be a quantum
expiration interrupt, it could just as easily be an I/O completion
interrupt.
-hpa
next prev parent reply other threads:[~2013-07-04 18:08 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-04 1:55 scheduling while atomic & hang Dave Jones
2013-07-04 2:49 ` Linus Torvalds
2013-07-04 4:43 ` H. Peter Anvin
2013-07-04 7:49 ` Dave Jones
2013-07-04 17:22 ` Linus Torvalds
2013-07-10 20:54 ` J. Bruce Fields
2013-07-04 18:08 ` H. Peter Anvin [this message]
2013-07-05 6:51 ` Ingo Molnar
2013-07-05 7:19 ` Frederic Weisbecker
2013-07-05 10:05 ` Ingo Molnar
2013-07-05 19:27 ` Linus Torvalds
2013-07-06 8:02 ` Frederic Weisbecker
2013-07-06 8:07 ` Ingo Molnar
2013-07-05 14:38 ` Yet more softlockups Dave Jones
2013-07-05 15:15 ` Thomas Gleixner
2013-07-05 16:00 ` Dave Jones
2013-07-05 16:02 ` Thomas Gleixner
2013-07-05 16:41 ` H. Peter Anvin
2013-07-05 18:20 ` Seiji Aguchi
2013-07-05 22:21 ` Thomas Gleixner
2013-07-06 7:24 ` Ingo Molnar
2013-07-07 0:24 ` Dave Jones
2013-07-10 15:13 ` Dave Jones
2013-07-10 15:20 ` Markus Trippelsdorf
2013-07-10 15:40 ` Dave Jones
2013-07-12 10:31 ` Ingo Molnar
2013-07-12 15:38 ` Dave Hansen
2013-07-12 15:45 ` Dave Jones
2013-07-12 15:55 ` Dave Hansen
2013-07-12 17:00 ` Dave Jones
2013-07-12 17:12 ` David Ahern
2013-07-12 17:18 ` Dave Jones
2013-07-12 17:40 ` David Ahern
2013-07-12 17:50 ` Dave Jones
2013-07-12 18:07 ` David Ahern
2013-07-12 18:22 ` Dave Hansen
2013-07-12 20:13 ` Dave Hansen
2013-07-13 1:40 ` Vince Weaver
2013-07-10 15:39 ` Vince Weaver
2013-07-10 15:45 ` Dave Jones
2013-07-10 21:54 ` Dave Jones
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