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

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 <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: DHE <[email protected]> Closes openzfs#9091
allanjude · Aug 12, 2019 · 01a77b9 · 01a77b9
1 parent 65b055d
commit 01a77b9
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/module/zfs/fm.c b/module/zfs/fm.c
@@ -691,8 +691,7 @@ 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;