Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Ravikiran G Thirumalai
On Wed, Jul 18, 2007 at 11:09:07PM -0700, Andrew Morton wrote: >On Wed, 18 Jul 2007 22:41:21 -0700 Ravikiran G Thirumalai <[EMAIL PROTECTED]> >wrote: > >> On Wed, Jul 18, 2007 at 04:08:58PM -0700, Andrew Morton wrote: >> > On Mon, 16 Jul 2007 15:26:50 -0700 >> > Ravikiran G Thirumalai <[EMAIL PROT

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Ravikiran G Thirumalai
On Thu, Jul 19, 2007 at 11:51:14AM -0700, Jeremy Fitzhardinge wrote: >Ingo Molnar wrote: >> just in case someone sees false positives and wants to turn it off. > >Why not make 0=off? A patch to disable softlockup during boot already went in. http://git.kernel.org/?p=linux/kernel/git/torvalds/linux

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Jeremy Fitzhardinge
Ingo Molnar wrote: > just in case someone sees false positives and wants to turn it off. Why not make 0=off? J - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Ingo Molnar
* Ravikiran G Thirumalai <[EMAIL PROTECTED]> wrote: > > also, i think the valid threshold should be between 1 and 60 seconds > > i think. > > 60 seconds! Is that not a pretty high threshold? The reason for > lowering the tolerance threshold from 10s is to catch bugs early in > lab environme

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Ravikiran G Thirumalai
On Thu, Jul 19, 2007 at 11:11:42AM +0200, Ingo Molnar wrote: > >* Andrew Morton <[EMAIL PROTECTED]> wrote: > >> > +softlockup_thresh: >> > + >> > +This value can be used to lower the softlockup tolerance >> > +threshold. The default threshold is 10s. If a cpu is locked up >> > +for 10s, the kernel

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-19 Thread Ingo Molnar
* Andrew Morton <[EMAIL PROTECTED]> wrote: > > +softlockup_thresh: > > + > > +This value can be used to lower the softlockup tolerance > > +threshold. The default threshold is 10s. If a cpu is locked up > > +for 10s, the kernel complains. Valid values are 1-10s. > > + > > neato. please make s

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-18 Thread Andrew Morton
On Wed, 18 Jul 2007 22:41:21 -0700 Ravikiran G Thirumalai <[EMAIL PROTECTED]> wrote: > On Wed, Jul 18, 2007 at 04:08:58PM -0700, Andrew Morton wrote: > > On Mon, 16 Jul 2007 15:26:50 -0700 > > Ravikiran G Thirumalai <[EMAIL PROTECTED]> wrote: > > > > > Kernel warns of softlockups if the softlocku

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-18 Thread Ravikiran G Thirumalai
On Wed, Jul 18, 2007 at 04:08:58PM -0700, Andrew Morton wrote: > On Mon, 16 Jul 2007 15:26:50 -0700 > Ravikiran G Thirumalai <[EMAIL PROTECTED]> wrote: > > > Kernel warns of softlockups if the softlockup thread is not able to run > > on a CPU for 10s. It is useful to lower the softlockup warning >

Re: [patch] Change softlockup trigger limit using a kernel parameter

2007-07-18 Thread Andrew Morton
On Mon, 16 Jul 2007 15:26:50 -0700 Ravikiran G Thirumalai <[EMAIL PROTECTED]> wrote: > Kernel warns of softlockups if the softlockup thread is not able to run > on a CPU for 10s. It is useful to lower the softlockup warning > threshold in testing environments to catch potential lockups early. > F

[patch] Change softlockup trigger limit using a kernel parameter

2007-07-16 Thread Ravikiran G Thirumalai
Kernel warns of softlockups if the softlockup thread is not able to run on a CPU for 10s. It is useful to lower the softlockup warning threshold in testing environments to catch potential lockups early. Following patch adds a kernel parameter 'softlockup_lim' to control the softlockup threshold.