Messages in this thread | | | Date | Mon, 3 Sep 2007 20:34:09 +0800 | From | "Jeff Chua" <> | Subject | Re: highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3] |
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On 9/3/07, Pavel Machek <pavel@ucw.cz> wrote:
> It gets weirder. With "nohz=off" on commandline, I have to press any > key (generate interrupt?) for echo 1 > online to finish. 2.6.23-rc5 > kernel... but hotplug/unplug works reliably now. > > With nohz=off highres=off I can unplug/replug cpus as much as I > want... running in tight loop now.
Yes. CONFIG_NO_HZ and and CONFIG_HIGH_RES_TIMERS has to be unset or suspend-to-disk would just hang, unless you type something on the keyboard, and then you can suspend to disk. It seems interrupts are not missing.
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