From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Anholt Subject: Re: [PATCH] drm/sched: Always trace the dependencies we wait on, to fix a race. Date: Thu, 07 Feb 2019 15:10:34 -0800 Message-ID: <87tvhf2o0l.fsf@anholt.net> References: <20181207191653.30118-1-eric@anholt.net> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: "Koenig, Christian" , "dri-devel@lists.freedesktop.org" , "amd-gfx@lists.freedesktop.org" Cc: "linux-kernel@vger.kernel.org" List-Id: amd-gfx.lists.freedesktop.org --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable "Koenig, Christian" writes: > Am 07.12.18 um 20:16 schrieb Eric Anholt: >> The entity->dependency can go away completely once we've called >> drm_sched_entity_add_dependency_cb() (if the cb is called before we >> get around to tracing). The tracepoint is more useful if we trace >> every dependency instead of just ones that get callbacks installed, >> anyway, so just do that. >> >> Fixes any easy-to-produce OOPS when tracing the scheduler on V3D with >> "perf record -a -e gpu_scheduler:.\* glxgears" and DEBUG_SLAB enabled. >> >> Signed-off-by: Eric Anholt > > Reviewed-by: Christian K=C3=B6nig > > Going to pick that up for upstream and will add with a CC: stable. Looks like this got misplaced. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE/JuuFDWp9/ZkuCBXtdYpNtH8nugFAlxcuuoACgkQtdYpNtH8 nujinQ/+JBLbUT9vbfUdcTVKTfrdcnYbes8xTWxScWMNxRyF/D5P/sVdpAPHssaj ExnhiCSKwKJEFvVTJ8j9IHoCXcm0WKO7j9BzLq1HMjQhmZHzyZGp+tzny4kxnlud 1oVVuwx2EwckpHA/fP9YZ0m2L25fcgCzx4FMVxoqP5Zs6Tq0AB3KXj+VyE0YseCR uAk1QKyXHijt0YMvW8q4j5k2UQG7GMbX8Bas43RI7Tn67FLXsJkaTId36BtGAz2+ C5E+/amXYYyFstBTglx5LKH6DX0EZvvET7IEOkJ4ZKH3cYZBCnUXMlqsKj5w4dwc lrJHFEmJQZ8cxAby+EKBfw9PWugmjVtN25E6/nqEaV4tyqp0+I2jEWj3Ht5TTxCA JlSiIUCyFhjGx92pAXkiVIGuPiFEg+Cg0tooQTzNkPXC3XXxGdkyW930xmAxOLZw owGHKRkCdwQQ7sHUA4AvV+2Jcm/fA1Ecd7PS1epYZL6xJ7fDm4gjtQvxi/y1rF6G sByNPpxwvbRHbpFfg1b+Ehb6eO9Xf0XsjbSILDLdGXI8Pagy2m8LNBFCZICa7GhC +7DmbaESv2We9ZIg5gA0I7ewiWM5VuwDu6/NitimM7Gga9HYJnfc5a5Mb4EWnTzk C9JDKdBgrYtKb+zCKyQRFF8AKOme+ldEfPrFxKcQsQXdCCw48n4= =RJdr -----END PGP SIGNATURE----- --=-=-=--