From: "Jeff Chua" <jeff.chua.linux@gmail.com>
To: "Pavel Machek" <pavel@ucw.cz>
Cc: rusty@rustycorp.com.au, vatsa@in.ibm.com, zwane@arm.linux.org.uk,
"kernel list" <linux-kernel@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
tglx@linutronix.de
Subject: Re: highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3]
Date: Mon, 3 Sep 2007 20:34:09 +0800 [thread overview]
Message-ID: <b6a2187b0709030534t6589772ahb1f8e45490a7b00d@mail.gmail.com> (raw)
In-Reply-To: <20070903035644.GC3655@ucw.cz>
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.
Thanks,
Jeff.
next prev parent reply other threads:[~2007-09-03 12:34 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-27 10:43 cpu hotplug support broken in 2.6.23-rc3 Pavel Machek
2007-08-27 10:58 ` Pavel Machek
2007-08-27 14:36 ` Jeff Chua
2007-08-27 15:22 ` Michal Piotrowski
2007-08-27 21:32 ` Pavel Machek
2007-08-27 21:59 ` Rafael J. Wysocki
2007-08-27 21:58 ` Pavel Machek
2007-08-28 10:30 ` Rafael J. Wysocki
2007-08-28 13:00 ` Akinobu Mita
2007-08-28 14:21 ` Jeff Chua
2007-09-03 3:47 ` Pavel Machek
2007-09-03 10:19 ` Rafael J. Wysocki
2007-09-03 12:35 ` Thomas Gleixner
2007-09-04 7:27 ` Pavel Machek
2007-09-13 20:01 ` Thomas Gleixner
2007-09-14 12:38 ` Pavel Machek
2007-09-14 12:50 ` Thomas Gleixner
2007-09-14 13:15 ` Thomas Gleixner
2007-09-15 9:49 ` Thomas Gleixner
2007-09-15 10:18 ` Andrew Morton
2007-09-15 13:28 ` Thomas Gleixner
2007-09-15 22:01 ` Andrew Morton
2007-09-15 13:44 ` Thomas Gleixner
2007-10-02 9:45 ` Pavel Machek
2007-09-14 18:49 ` Pallipadi, Venkatesh
2007-09-14 19:18 ` Thomas Gleixner
2007-09-03 3:56 ` highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3] Pavel Machek
2007-09-03 12:34 ` Jeff Chua [this message]
2007-08-29 8:08 ` cpu hotplug support broken in 2.6.23-rc3 Gautham R Shenoy
2007-09-03 3:58 ` Pavel Machek
2007-11-15 22:37 ` cpu hotplug strangeness in 2.6.24-rc2 (was Re: cpu hotplug support broken in 2.6.23-rc3) Pavel Machek
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