Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-12-10 Thread Yinghai Lu
On Tue, Dec 10, 2013 at 2:58 AM, Peter Zijlstra wrote: > Ooh, sg_capacity() is generating the /0.. > > Does the below work too? > > --- > kernel/sched/core.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index 87c3bc47d99d..40b185f5a3ec 1006

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-12-10 Thread Peter Zijlstra
On Thu, Dec 05, 2013 at 10:24:25PM -0800, Yinghai Lu wrote: > --- > kernel/sched/core.c |3 +++ > 1 file changed, 3 insertions(+) > > Index: linux-2.6/kernel/sched/core.c > === > --- linux-2.6.orig/kernel/sched/core.c > +++ linux

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-12-05 Thread Yinghai Lu
On Wed, Nov 27, 2013 at 11:07 PM, Yinghai Lu wrote: > On Wed, Nov 27, 2013 at 7:02 PM, David Rientjes wrote: > maybe not related, now in another system, linus's tree + Srikar's patch. > > got > > [ 33.546361] divide error: [#1] > SMP > [ 33.589436] Modules linked in: > [ 33.592869] CP

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-28 Thread Yinghai Lu
On Thu, Nov 28, 2013 at 1:38 AM, Peter Zijlstra wrote: > On Wed, Nov 27, 2013 at 11:07:04PM -0800, Yinghai Lu wrote: >> On Wed, Nov 27, 2013 at 7:02 PM, David Rientjes wrote: >> > On Thu, 21 Nov 2013, Yinghai Lu wrote: >> > >> >> original one in linus's tree: >> >> >> >> [8.952728] NMI watchd

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-28 Thread Peter Zijlstra
On Wed, Nov 27, 2013 at 11:07:04PM -0800, Yinghai Lu wrote: > On Wed, Nov 27, 2013 at 7:02 PM, David Rientjes wrote: > > On Thu, 21 Nov 2013, Yinghai Lu wrote: > > > >> original one in linus's tree: > >> > >> [8.952728] NMI watchdog: enabled on all CPUs, permanently consumes > >> one hw-PMU co

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-27 Thread Yinghai Lu
On Wed, Nov 27, 2013 at 7:02 PM, David Rientjes wrote: > On Thu, 21 Nov 2013, Yinghai Lu wrote: > >> original one in linus's tree: >> >> [8.952728] NMI watchdog: enabled on all CPUs, permanently consumes >> one hw-PMU counter. >> [8.965697] BUG: unable to handle kernel NULL pointer derefer

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-27 Thread David Rientjes
On Thu, 21 Nov 2013, Yinghai Lu wrote: > original one in linus's tree: > > [8.952728] NMI watchdog: enabled on all CPUs, permanently consumes > one hw-PMU counter. > [8.965697] BUG: unable to handle kernel NULL pointer dereference > at 0010 > [8.969495] IP: [] update_group

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-27 Thread David Rientjes
On Tue, 19 Nov 2013, tip-bot for Srikar Dronamraju wrote: > Commit-ID: 9abf24d465180f5f2eb26a43545348262f16b771 > Gitweb: http://git.kernel.org/tip/9abf24d465180f5f2eb26a43545348262f16b771 > Author: Srikar Dronamraju > AuthorDate: Tue, 12 Nov 2013 22:11:26 +0530 > Committer: Ingo Molnar

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-23 Thread Peter Zijlstra
On Fri, Nov 22, 2013 at 09:00:54PM -0800, Yinghai Lu wrote: > On Fri, Nov 22, 2013 at 4:07 AM, Peter Zijlstra wrote: > > And I suppose a kernel before > > > > 863bffc80898 ("sched/fair: Fix group power_orig computation") > > > > work fine, eh? > > > > I'll further assume that your RIP points to:

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-22 Thread Yinghai Lu
On Fri, Nov 22, 2013 at 4:07 AM, Peter Zijlstra wrote: > On Thu, Nov 21, 2013 at 09:22:24AM -0800, Yinghai Lu wrote: >> On Thu, Nov 21, 2013 at 7:03 AM, Peter Zijlstra wrote: >> >> >> >> This one seems fix NULL reference in compute_group_power. >> >> >> >> but get following on current Linus tree

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-22 Thread Peter Zijlstra
On Thu, Nov 21, 2013 at 09:22:24AM -0800, Yinghai Lu wrote: > On Thu, Nov 21, 2013 at 7:03 AM, Peter Zijlstra wrote: > >> > >> This one seems fix NULL reference in compute_group_power. > >> > >> but get following on current Linus tree plus tip/sched/urgent. > >> > >> divide error: [#1] SMP >

Re: [tip:sched/urgent] sched: Check sched_domain before computing group power

2013-11-19 Thread Yinghai Lu
On Tue, Nov 19, 2013 at 11:15 AM, tip-bot for Srikar Dronamraju wrote: > Commit-ID: 9abf24d465180f5f2eb26a43545348262f16b771 > Gitweb: http://git.kernel.org/tip/9abf24d465180f5f2eb26a43545348262f16b771 > Author: Srikar Dronamraju > AuthorDate: Tue, 12 Nov 2013 22:11:26 +0530 > Committer: