From: Peter Zijlstra <peterz@infradead.org>
To: "Liu, Chuansheng" <chuansheng.liu@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Yanmin Zhang <yanmin_zhang@linux.intel.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Subject: RE: [PATCH] Fix the race between smp_call_function and CPU booting
Date: Fri, 23 Mar 2012 11:25:33 +0100 [thread overview]
Message-ID: <1332498333.16159.9.camel@twins> (raw)
In-Reply-To: <27240C0AC20F114CBF8149A2696CBE4A05C092@SHSMSX101.ccr.corp.intel.com>
On Thu, 2012-03-22 at 00:59 +0000, Liu, Chuansheng wrote:
> Below is the complete test patch. Just run the simpl_loop_onoffline.sh
> and simpl_loop_smpcalling.sh concurrently
> to reproduce the race.
>
What I did was:
for i in {2..23} ; do echo 0 > /sys/devices/system/cpu/cpu${i}/online ; done
while usleep 50000 ; do echo 1 > /debug/smp_call_test ; done &
while :; do echo $i > /sys/devices/system/cpu/cpu1/online ; let i^=1 ; done
and this has been running for well over 30 minutes.. is there anything
else one needs to do?
next prev parent reply other threads:[~2012-03-23 10:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-12 9:27 [PATCH] Fix the race between smp_call_function and CPU booting Liu, Chuansheng
2012-03-12 9:32 ` Peter Zijlstra
2012-03-13 6:43 ` Liu, Chuansheng
2012-03-12 9:58 ` Peter Zijlstra
2012-03-13 6:46 ` Liu, Chuansheng
2012-03-13 15:57 ` Peter Zijlstra
2012-03-14 6:27 ` Liu, Chuansheng
2012-03-14 9:43 ` Peter Zijlstra
2012-03-15 0:11 ` Liu, Chuansheng
2012-03-15 10:46 ` Peter Zijlstra
2012-03-16 6:24 ` Liu, Chuansheng
2012-03-16 9:49 ` Peter Zijlstra
2012-03-19 0:58 ` Liu, Chuansheng
2012-03-19 10:03 ` Peter Zijlstra
2012-03-20 0:22 ` Liu, Chuansheng
2012-03-20 12:17 ` Peter Zijlstra
2012-03-20 13:14 ` Srivatsa S. Bhat
2012-03-20 13:41 ` Peter Zijlstra
2012-03-20 15:02 ` Srivatsa S. Bhat
2012-03-21 5:59 ` Liu, Chuansheng
2012-03-21 9:12 ` Peter Zijlstra
2012-03-21 12:25 ` Peter Zijlstra
2012-03-22 0:59 ` Liu, Chuansheng
2012-03-23 10:25 ` Peter Zijlstra [this message]
2012-03-23 11:32 ` Liu, Chuansheng
2012-03-23 12:02 ` Peter Zijlstra
2012-03-23 12:06 ` Liu, Chuansheng
2012-03-23 12:13 ` Peter Zijlstra
2012-03-23 12:21 ` Liu, Chuansheng
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