Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Steven Rostedt
-- On Sat, 27 Oct 2007, Mike Galbraith wrote: > > Hm. Looking at the change to mm/bounce.c, perhaps I should do this > instead? > > --- ./fs/ntfs/aops.c.org 2007-10-27 10:16:40.0 +0200 > +++ ./fs/ntfs/aops.c 2007-10-27 12:11:07.0 +0200 > @@ -139,13 +139,13 @@ static void ntf

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Steven Rostedt
-- On Sat, 27 Oct 2007, Jaswinder Singh wrote: > Hello Ingo, > > On 10/27/07, Ingo Molnar <[EMAIL PROTECTED]> wrote: > > > > it's not atomic interrupt context but irq thread context - and -rt > > remaps kmap_atomic() to kmap() internally. > > > > the problem seems to be what Mike's patch works a

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Ingo Molnar
* Mike Galbraith <[EMAIL PROTECTED]> wrote: > > it's not atomic interrupt context but irq thread context - and -rt > > remaps kmap_atomic() to kmap() internally. > > Hm. Looking at the change to mm/bounce.c, perhaps I should do this > instead? yeah, this looks better. Ingo - To unsu

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Mike Galbraith
On Sat, 2007-10-27 at 11:44 +0200, Ingo Molnar wrote: > * Nick Piggin <[EMAIL PROTECTED]> wrote: > > > > [10138.175796] [] show_trace+0x12/0x14 > > > [10138.180291] [] dump_stack+0x16/0x18 > > > [10138.184769] [] native_smp_call_function_mask+0x138/0x13d > > > [10138.191117] [] smp_call_functi

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Jaswinder Singh
Hello Ingo, On 10/27/07, Ingo Molnar <[EMAIL PROTECTED]> wrote: > > it's not atomic interrupt context but irq thread context - and -rt > remaps kmap_atomic() to kmap() internally. > > the problem seems to be what Mike's patch works around: fiddling with > irq flags in the ntfs code. That fiddling

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Ingo Molnar
* Nick Piggin <[EMAIL PROTECTED]> wrote: > > [10138.175796] [] show_trace+0x12/0x14 > > [10138.180291] [] dump_stack+0x16/0x18 > > [10138.184769] [] native_smp_call_function_mask+0x138/0x13d > > [10138.191117] [] smp_call_function+0x1e/0x24 > > [10138.196210] [] on_each_cpu+0x25/0x50 > > [10

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Mike Galbraith
On Sat, 2007-10-27 at 19:15 +1000, Nick Piggin wrote: > On Saturday 27 October 2007 15:21, Mike Galbraith wrote: > > Greetings, > > > > For quite a while now, RT kernels have been locking up on me > > occasionally while my back is turned. Yesterday, the little bugger > > finally pounced while my s

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Mike Galbraith
On Sat, 2007-10-27 at 07:21 +0200, Mike Galbraith wrote: > Greetings, > > For quite a while now, RT kernels have been locking up on me > occasionally while my back is turned. Yesterday, the little bugger > finally pounced while my serial console box was up and waiting. > > [10138.162953] WARNING

Re: [2.6.23-rt3] NMI watchdog trace of deadlock

2007-10-27 Thread Nick Piggin
On Saturday 27 October 2007 15:21, Mike Galbraith wrote: > Greetings, > > For quite a while now, RT kernels have been locking up on me > occasionally while my back is turned. Yesterday, the little bugger > finally pounced while my serial console box was up and waiting. > > [10138.162953] WARNING: