Messages in this thread Patch in this message | | | Date | Wed, 9 Jul 2014 20:53:51 +0530 | Subject | Re: [RFC 7/7] net: don't check for active hrtimer after adding it | From | Viresh Kumar <> |
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On 9 July 2014 16:14, Viresh Kumar <viresh.kumar@linaro.org> wrote: > Yeah, it looks like we can get rid of this. Also, > > } while (t.task && pkt_dev->running && !signal_pending(current)); > > is present in the closing "}" of do-while loop and probably we > don't need to check t.task here as well.
Actually No. t.task is modified from hrtimer handler and so this check would stay:
Diff I have added to this patch:
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index f911acd..cc2694e 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -2187,8 +2187,7 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) set_current_state(TASK_INTERRUPTIBLE); hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
- if (likely(t.task)) - schedule(); + schedule();
hrtimer_cancel(&t.timer); } while (t.task && pkt_dev->running && !signal_pending(current));
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