RE: [PATCH] Fix the race between smp_call_function and CPU booting

[Peter Zijlstra]

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?


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