Author: sbruno
Date: Sun Feb 12 23:06:41 2017
New Revision: 313691
URL: https://svnweb.freebsd.org/changeset/base/313691
Log:
Only trigger em_local_timer on queue index 0. This was causing continuous
em_local_timer() executions during normal operation and was very likely
to cause a lock up on igb(4) devices.
Submitted by: Matt Macy (mm...@nextbsd.org)
Reported by: jtl
Reviewed by: gallatin
Sponsored by: Limelight Networks & Netflix
Modified:
head/sys/dev/e1000/if_em.c
Modified: head/sys/dev/e1000/if_em.c
==============================================================================
--- head/sys/dev/e1000/if_em.c Sun Feb 12 21:05:44 2017 (r313690)
+++ head/sys/dev/e1000/if_em.c Sun Feb 12 23:06:41 2017 (r313691)
@@ -1625,6 +1625,11 @@ em_if_timer(if_ctx_t ctx, uint16_t qid)
int i;
int trigger = 0;
+ if (qid != 0) {
+ /* XXX all this stuff is per-adapter */
+ return;
+ }
+
em_if_update_admin_status(ctx);
em_update_stats_counters(adapter);
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