commit 52c0fdb25c7c919334b97976d05096b441a3eada
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Jan 29 20:52:29 2019 +0000

    drm/i915: Replace global breadcrumbs with per-context interrupt tracking


git bisect log:
[media@localhost drm-tip]$ cat git-bisect-2019-02-26.log
git bisect start
# bad: [3dd976663b985375368c6229903a1c47971c2a71] drm-tip: 2019y-02m-24d-18h-41m-57s UTC integration manifest
git bisect bad 3dd976663b985375368c6229903a1c47971c2a71
# good: [16eb0f34cdf4cf04cd92762c7a79f98aa51e053f] drm/i915/opregion: rvda is relative from opregion base in opregion 2.1+
git bisect good 16eb0f34cdf4cf04cd92762c7a79f98aa51e053f
# bad: [e6049cf122d1568d8000c7f5bd52c99de07ecc65] drm: Remove set but not used variable 'gem'
git bisect bad e6049cf122d1568d8000c7f5bd52c99de07ecc65
# bad: [584fca111d0cf32f6002472d9cb13c4555587438] drm/i915/icl: use tc_port in MG_PLL macros
git bisect bad 584fca111d0cf32f6002472d9cb13c4555587438
# good: [8ca4fd0406b41a872055048d694f3702d8eddb76] Merge tag 'drm-intel-next-2019-01-10' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
git bisect good 8ca4fd0406b41a872055048d694f3702d8eddb76
# good: [ff00d85b4df97bf9cc7082b3d0dc2c317b946aa2] Merge tag 'gvt-next-2019-01-24' of https://github.com/intel/gvt-linux into drm-intel-next-queued
git bisect good ff00d85b4df97bf9cc7082b3d0dc2c317b946aa2
# good: [968bf969b47df2481022b9a05eaab02948eec088] drm/i915: Fix skl srckey mask bits
git bisect good 968bf969b47df2481022b9a05eaab02948eec088
# good: [8a813e401fcd41064e52350f120928c95f344af7] drm/sun4i: frontend: Add and use helper for checking tiling support
git bisect good 8a813e401fcd41064e52350f120928c95f344af7
# good: [da279eb9a0764f688b627565c1c708c441103707] drm/dp: Implement I2C_M_STOP for i2c-over-aux
git bisect good da279eb9a0764f688b627565c1c708c441103707
# good: [c9a646228816efeeacb05cc9400464ad8aa90017] drm/i915/execlists: Suppress preempting self
git bisect good c9a646228816efeeacb05cc9400464ad8aa90017
# good: [68e94f62cfbe1650fb783979150a2b2f0a3eca1c] drm/i915/tv: Bypass the vertical filter if possible
git bisect good 68e94f62cfbe1650fb783979150a2b2f0a3eca1c
# bad: [52c0fdb25c7c919334b97976d05096b441a3eada] drm/i915: Replace global breadcrumbs with per-context interrupt tracking
git bisect bad 52c0fdb25c7c919334b97976d05096b441a3eada
# good: [3df0bd19193c47c48b7904e5f41c3041a431da33] drm/i915: Remove the intel_engine_notify tracepoint
git bisect good 3df0bd19193c47c48b7904e5f41c3041a431da33
# first bad commit: [52c0fdb25c7c919334b97976d05096b441a3eada] drm/i915: Replace global breadcrumbs with per-context interrupt tracking