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net: pktgen: Use wait_event_freezable_timeout() for freezable kthread 

A freezable kernel thread can enter frozen state during freezing by
either calling try_to_freeze() or using wait_event_freezable() and its
variants. So for the following snippet of code in a kernel thread loop:
  wait_event_interruptible_timeout();
  try_to_freeze();

We can change it to a simple wait_event_freezable_timeout() and then
eliminate a function call.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kevin Hao 2023-12-20 07:37:57 +08:00 committed by David S. Miller
parent 2f7ccf1d88
commit 3fb65f6bc7
1 changed files with 2 additions and 4 deletions
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6
net/core/pktgen.c
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@ -3669,10 +3669,8 @@ static int pktgen_thread_worker(void *arg)
if (unlikely(!pkt_dev && t->control == 0)) {
if (t->net->pktgen_exiting)
break;
wait_event_interruptible_timeout(t->queue,
t->control != 0,
HZ/10);
try_to_freeze();
wait_event_freezable_timeout(t->queue,
t->control != 0, HZ / 10);
continue;
}