On 05/11/2014 03:55 AM, Benjamin Herrenschmidt wrote:
On Sat, 2014-05-10 at 21:06 +0530, Preeti U Murthy wrote:
On 05/10/2014 09:56 AM, Benjamin Herrenschmidt wrote:
On Fri, 2014-05-09 at 15:22 +0530, Preeti U Murthy wrote:
in __timer_interrupt() outside the _else_ loop? This will ensure that
On Sun, 2014-05-11 at 13:45 +0530, Preeti U Murthy wrote:
+ /* Don't adjust the decrementer if some irq work is pending
*/
+ if (!test_irq_work_pending())
+ set_dec(evt);
+ else
+ set_dec(1);
^ your patch currently
On 05/11/2014 02:07 PM, Benjamin Herrenschmidt wrote:
On Sun, 2014-05-11 at 13:45 +0530, Preeti U Murthy wrote:
+ /* Don't adjust the decrementer if some irq work is pending
*/
+ if (!test_irq_work_pending())
+ set_dec(evt);
+ else
+
On Sun, 2014-05-11 at 14:13 +0530, Preeti U Murthy wrote:
Isn't this patch required too?
@@ -503,12 +503,13 @@ void __timer_interrupt(void)
now = *next_tb - now;
if (now = DECREMENTER_MAX)
set_dec((int)now);
- /* We
On 05/11/2014 02:33 PM, Benjamin Herrenschmidt wrote:
On Sun, 2014-05-11 at 14:13 +0530, Preeti U Murthy wrote:
Isn't this patch required too?
@@ -503,12 +503,13 @@ void __timer_interrupt(void)
now = *next_tb - now;
if (now = DECREMENTER_MAX)
On Fri, May 09, 2014 at 03:08:45PM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at 11:50:05PM +0200, Gabriel Paubert wrote:
On Fri, May 09, 2014 at 06:41:13AM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at 05:47:12PM +1000, Anton Blanchard wrote:
I am seeing an issue where
On 05/10/2014 09:56 AM, Benjamin Herrenschmidt wrote:
On Fri, 2014-05-09 at 15:22 +0530, Preeti U Murthy wrote:
in __timer_interrupt() outside the _else_ loop? This will ensure that no
matter what, before exiting timer interrupt handler we check for pending
irq work.
We still need to make
On Sat, May 10, 2014 at 04:33:37PM +1000, Paul Mackerras wrote:
On Fri, May 09, 2014 at 03:08:45PM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at 11:50:05PM +0200, Gabriel Paubert wrote:
On Fri, May 09, 2014 at 06:41:13AM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at
On Sat, 2014-05-10 at 21:06 +0530, Preeti U Murthy wrote:
On 05/10/2014 09:56 AM, Benjamin Herrenschmidt wrote:
On Fri, 2014-05-09 at 15:22 +0530, Preeti U Murthy wrote:
in __timer_interrupt() outside the _else_ loop? This will ensure that no
matter what, before exiting timer interrupt
I am seeing an issue where a CPU running perf eventually hangs.
Traces show timer interrupts happening every 4 seconds even
when a userspace task is running on the CPU. /proc/timer_list
also shows pending hrtimers have not run in over an hour,
including the scheduler.
Looking closer,
Hi Anton,
On 05/09/2014 01:17 PM, Anton Blanchard wrote:
I am seeing an issue where a CPU running perf eventually hangs.
Traces show timer interrupts happening every 4 seconds even
when a userspace task is running on the CPU. /proc/timer_list
also shows pending hrtimers have not run in over
On Fri, May 09, 2014 at 05:47:12PM +1000, Anton Blanchard wrote:
I am seeing an issue where a CPU running perf eventually hangs.
Traces show timer interrupts happening every 4 seconds even
when a userspace task is running on the CPU.
Is this by chance every 4.2 seconds? The reason I ask is
On Fri, May 09, 2014 at 11:50:05PM +0200, Gabriel Paubert wrote:
On Fri, May 09, 2014 at 06:41:13AM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at 05:47:12PM +1000, Anton Blanchard wrote:
I am seeing an issue where a CPU running perf eventually hangs.
Traces show timer interrupts
On Fri, May 09, 2014 at 06:41:13AM -0700, Paul E. McKenney wrote:
On Fri, May 09, 2014 at 05:47:12PM +1000, Anton Blanchard wrote:
I am seeing an issue where a CPU running perf eventually hangs.
Traces show timer interrupts happening every 4 seconds even
when a userspace task is running on
On Fri, 2014-05-09 at 15:22 +0530, Preeti U Murthy wrote:
in __timer_interrupt() outside the _else_ loop? This will ensure that no
matter what, before exiting timer interrupt handler we check for pending
irq work.
We still need to make sure that set_next_event() doesn't move the
dec beyond the
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