diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e6675b981e0e..037b26e2a960 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1542,6 +1542,22 @@ complete: *timeout = 0; } + if (rps && req->seqno == req->engine->last_submitted_seqno) { + /* The GPU is now idle and this client has stalled. + * Since no other client has submitted a request in the + * meantime, assume that this client is the only one + * supplying work to the GPU but is unable to keep that + * work supplied because it is waiting. Since the GPU is + * then never kept fully busy, RPS autoclocking will + * keep the clocks relatively low, causing further delays. + * Compensate by giving the synchronous client credit for + * a waitboost next time. + */ + spin_lock(&req->i915->rps.client_lock); + list_del_init(&rps->link); + spin_unlock(&req->i915->rps.client_lock); + } + return ret; } |