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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2017-09-19 17:41:28 +0300 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@intel.com> | 2017-09-20 13:56:05 +0300 |
| commit | 87de8d5613a7221abcce0b680b0da3c98b0871c8 (patch) | |
| tree | d9c2596452035628fd8363ec04cab1074a124212 /tools/perf/scripts/python/syscall-counts.py | |
| parent | d81fb7fd9436e81fda67e5bc8ed0713aa28d3db2 (diff) | |
| download | linux-87de8d5613a7221abcce0b680b0da3c98b0871c8.tar.xz | |
drm/i915: Stop engines before reset
On kbl evidence indicates that even if the hardware happily
tells us to proceed with reset, it really isn't ready.
Resetting a freely running batchbuffer after we have ack for readiness,
still can cause a system hang.
We also have similar experiences on older gens. So now
attempt to stop engines before proceeding for reset, on all
gens where we have a gpu reset. This has shown to improve reset
reliability and reduce the risk of losing the machine.
v2: Add fixme for wa (Joonas)
Testcase: igt/prime_busy/hang-* # kbl
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170919144128.25506-1-mika.kuoppala@intel.com
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
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