Messages in this thread | | | Subject | Re: [PATCH v2 2/3] perf: use hrtimer for event multiplexing | From | Peter Zijlstra <> | Date | Wed, 12 Sep 2012 16:50:31 +0200 |
| |
On Wed, 2012-09-12 at 16:48 +0200, Stephane Eranian wrote: > On Wed, Sep 12, 2012 at 4:44 PM, Peter Zijlstra <peterz@infradead.org> wrote: > > On Wed, 2012-09-12 at 16:43 +0200, Stephane Eranian wrote: > >> The hrtimer_active is used to prevent activating the timer multiple times > >> in a row. > > > > see hrtimer_active(), this should do what you want I think. > > I need something that is true even when the hrtimer is not executing > the callback handler. I guess that may be the different between > hrtimer_active() vs. hrtimer_running()?
As the comment states, hrtimer_active() returns true if the timer is either in the tree (enqueued) or running.
hrtimer_callback_running() is true iff the callback is currently executing.
hrtimer_queued() is true iff the timer is queued.
| |