Re: perf PPC: kernel panic with callchains and context switch events

2011-07-25 Thread David Ahern
Hi Ben: On 07/24/2011 07:55 PM, Benjamin Herrenschmidt wrote: > On Sun, 2011-07-24 at 11:18 -0600, David Ahern wrote: >> On 07/20/2011 03:57 PM, David Ahern wrote: >>> I am hoping someone familiar with PPC can help understand a panic that >>> is generated when capturing callchains with context swi

Re: perf PPC: kernel panic with callchains and context switch events

2011-07-24 Thread Benjamin Herrenschmidt
On Sun, 2011-07-24 at 11:18 -0600, David Ahern wrote: > On 07/20/2011 03:57 PM, David Ahern wrote: > > I am hoping someone familiar with PPC can help understand a panic that > > is generated when capturing callchains with context switch events. > > > > Call trace is below. The short of it is that

Re: perf PPC: kernel panic with callchains and context switch events

2011-07-24 Thread David Ahern
On 07/20/2011 03:57 PM, David Ahern wrote: > I am hoping someone familiar with PPC can help understand a panic that > is generated when capturing callchains with context switch events. > > Call trace is below. The short of it is that walking the callchain > generates a page fault. To handle the pa

Fwd: perf PPC: kernel panic with callchains and context switch events

2011-07-20 Thread David Ahern
[suggestion to try this mailing list as well] Original Message Subject: perf PPC: kernel panic with callchains and context switch events Date: Wed, 20 Jul 2011 15:57:51 -0600 From: David Ahern To: Anton Blanchard , Paul Mackerras , linux-perf-us...@vger.kernel.org, LKML I am