In order to keep the memory allocated for requests reasonably tight, try to reuse the oldest request (so long as it is completed and has no external references) for the next allocation.
Signed-off-by: Chris Wilson <[email protected]> --- drivers/gpu/drm/i915/i915_gem_request.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index f4eebce97003..25fd91aad74b 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -226,6 +226,13 @@ __i915_gem_request_alloc(struct intel_engine_cs *engine, if (ret) return ret; + if (!list_empty(&engine->request_list)) { + req = list_first_entry(&engine->request_list, + typeof(*req), list); + if (i915_gem_request_completed(req)) + i915_gem_request_retire(req); + } + req = kmem_cache_zalloc(dev_priv->requests, GFP_KERNEL); if (!req) return -ENOMEM; -- 2.8.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
