From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
Nathan Lynch <nathanl@austin.ibm.com>,
Joel Schopp <jschopp@austin.ibm.com>,
Ashok Raj <ashok.raj@intel.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Gautham R Shenoy <ego@in.ibm.com>
Subject: Re: [BUG] CPU hotplug: system hang on CPU hot remove during oprofile
Date: Mon, 28 May 2007 10:12:24 +0100 [thread overview]
Message-ID: <20070528091224.GA26046@flint.arm.linux.org.uk> (raw)
In-Reply-To: <87k5utblbp.wl%takeuchi_satoru@jp.fujitsu.com>
On Mon, May 28, 2007 at 01:53:30PM +0900, Satoru Takeuchi wrote:
> I found a bug on CPU hotplug. If oprofile is running, CPU hot remove causes
> system hang. I only confirm that this problem occurs on my ia64 box. I'm glad
> if someone report about other arch.
oprofile is not CPU hotplug safe. (It should probably be made so,
but I think that would require a redesign, or at least a rewrite of
the backends.)
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
prev parent reply other threads:[~2007-05-28 9:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-28 4:53 [BUG] CPU hotplug: system hang on CPU hot remove during oprofile Satoru Takeuchi
2007-05-28 9:12 ` Russell King [this message]
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