~jiffie and a few usecs is 3 orders of magnitude different. A bit much. This was changed in
commit ca5b721e238226af1d767103ac852aeb8e4c0764 Author: Chris Wilson <[email protected]> Date: Fri Dec 11 11:32:58 2015 +0000 drm/i915: Limit the busy wait on requests to 5us not 10ms! But probably missed the comment since the change was non-local to the comment. Cc: Tvrtko Ursulin <[email protected]> Cc: Chris Wilson <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> --- drivers/gpu/drm/i915/i915_gem_request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 3fecb8f0e041..1c7307f219f9 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -644,7 +644,7 @@ int i915_wait_request(struct drm_i915_gem_request *req, if (IS_RPS_CLIENT(rps) && INTEL_GEN(req->i915) >= 6) gen6_rps_boost(req->i915, rps, req->emitted_jiffies); - /* Optimistic spin for the next ~jiffie before touching IRQs */ + /* Optimistic spin for the next usecs before touching IRQs */ if (i915_spin_request(req, state, 5)) goto complete; -- 2.8.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
