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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-09-23 14:00:55 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-09-23 18:21:37 +0300 |
| commit | c0bb487dc19fc45dbeede7dcf8f513df51a3cd33 (patch) | |
| tree | 9f23871f9b660fa60565c7aa1d1089dc9a5e8d85 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 3231f8c01121ee1febfd82398ee22f7ff9dc5d76 (diff) | |
| download | linux-c0bb487dc19fc45dbeede7dcf8f513df51a3cd33.tar.xz | |
drm/i915: Only enqueue already completed requests
If we are asked to submit a completed request, just move it onto the
active-list without modifying it's payload. If we try to emit the
modified payload of a completed request, we risk racing with the
ring->head update during retirement which may advance the head past our
breadcrumb and so we generate a warning for the emission being behind
the RING_HEAD.
v2: Commentary for the sneaky, shared responsibility between functions.
v3: Spelling mistakes and bonus assertion
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190923110056.15176-3-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions