Date: Thu, 16 Jul 2015 16:32:58 +0000 (UTC) From: Sean Bruno <sbruno@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r285639 - head/sys/dev/e1000 Message-ID: <201507161632.t6GGWwJA072336@repo.freebsd.org>
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Author: sbruno Date: Thu Jul 16 16:32:57 2015 New Revision: 285639 URL: https://svnweb.freebsd.org/changeset/base/285639 Log: Add an adapter CORE lock in the DDB hook em_dump_queue to avoid WITNESS panic in em_init_locked() while debugging. MFC after: 2 weeks Sponsored by: Limelight Networks Modified: head/sys/dev/e1000/if_em.c Modified: head/sys/dev/e1000/if_em.c ============================================================================== --- head/sys/dev/e1000/if_em.c Thu Jul 16 16:08:40 2015 (r285638) +++ head/sys/dev/e1000/if_em.c Thu Jul 16 16:32:57 2015 (r285639) @@ -5998,7 +5998,9 @@ DB_COMMAND(em_reset_dev, em_ddb_reset_de dev = devclass_get_device(dc, index); if (device_get_driver(dev) == &em_driver) { struct adapter *adapter = device_get_softc(dev); + EM_CORE_LOCK(adapter); em_init_locked(adapter); + EM_CORE_UNLOCK(adapter); } } }
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