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Don't wakeup unnecessarily in 'zpool events -f'

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ZED can prevent CPU's from properly sleeping.

Rather than periodically waking up in the zevents code, just go to sleep and wait for a wakeup.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: DHE <git@dehacked.net>
Closes #9091
This commit is contained in:
DeHackEd 2019-08-05 14:35:47 -04:00 committed by Matthew Ahrens
parent 8098465558
commit 99e755d653
1 changed files with 1 additions and 2 deletions
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3
module/zfs/fm.c
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@ -683,8 +683,7 @@ zfs_zevent_wait(zfs_zevent_t *ze)
break;
}
error = cv_timedwait_sig(&zevent_cv, &zevent_lock,
ddi_get_lbolt() + MSEC_TO_TICK(10));
error = cv_wait_sig(&zevent_cv, &zevent_lock);
if (signal_pending(current)) {
error = SET_ERROR(EINTR);
break;