From patchwork Mon May 11 07:57:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11539893 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CC5B7139A for ; Mon, 11 May 2020 07:58:08 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B47E020735 for ; Mon, 11 May 2020 07:58:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B47E020735 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 034586E265; Mon, 11 May 2020 07:58:04 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id E62FD6E25B for ; Mon, 11 May 2020 07:58:00 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 21160794-1500050 for multiple; Mon, 11 May 2020 08:57:27 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 11 May 2020 08:57:12 +0100 Message-Id: <20200511075722.13483-10-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200511075722.13483-1-chris@chris-wilson.co.uk> References: <20200511075722.13483-1-chris@chris-wilson.co.uk> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 10/20] drm/i915/gt: Declare when we enabled timeslicing X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kenneth Graunke , Chris Wilson Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Let userspace know if they can trust timeslicing by including it as part of the I915_PARAM_HAS_SCHEDULER::I915_SCHEDULER_CAP_TIMESLICING v2: Only declare timeslicing if we can safely preempt userspace. Fixes: 8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing") Link: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3802 Link: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4854 Signed-off-by: Chris Wilson Cc: Kenneth Graunke Cc: Tvrtko Ursulin --- drivers/gpu/drm/i915/gt/intel_engine_user.c | 1 + include/uapi/drm/i915_drm.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c index 848decee9066..8415511f1465 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_user.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c @@ -98,6 +98,7 @@ static void set_scheduler_caps(struct drm_i915_private *i915) MAP(HAS_PREEMPTION, PREEMPTION), MAP(HAS_SEMAPHORES, SEMAPHORES), MAP(SUPPORTS_STATS, ENGINE_BUSY_STATS), + MAP(HAS_TIMESLICES, TIMESLICING), #undef MAP }; struct intel_engine_cs *engine; diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 704dd0e3bc1d..1ee227b5131a 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -523,6 +523,7 @@ typedef struct drm_i915_irq_wait { #define I915_SCHEDULER_CAP_PREEMPTION (1ul << 2) #define I915_SCHEDULER_CAP_SEMAPHORES (1ul << 3) #define I915_SCHEDULER_CAP_ENGINE_BUSY_STATS (1ul << 4) +#define I915_SCHEDULER_CAP_TIMESLICING (1ul << 5) #define I915_PARAM_HUC_STATUS 42