From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 161DBC2B9F8 for ; Tue, 25 May 2021 14:19:57 +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 BE72A613E1 for ; Tue, 25 May 2021 14:19:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BE72A613E1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com 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 32E9C6EA3B; Tue, 25 May 2021 14:19:56 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 057AC6EA3B; Tue, 25 May 2021 14:19:54 +0000 (UTC) IronPort-SDR: q0uF2jQoducmJ5nSoCIOJ0NADKefNaH4kmmAeQu0V0Y+4WKT/y+SKLZIahH8kFEO7ztUu8rwqZ 56TkZ5zrxsQQ== X-IronPort-AV: E=McAfee;i="6200,9189,9995"; a="202240579" X-IronPort-AV: E=Sophos;i="5.82,328,1613462400"; d="scan'208";a="202240579" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2021 07:19:52 -0700 IronPort-SDR: JaC8ErFap8+Rnpug6svDD4ahaEcq74CYjynwsBVNKbdeEzoG6hrpw7Ak5cwjJRoYO6HksaTJcM aymWnU89yplQ== X-IronPort-AV: E=Sophos;i="5.82,328,1613462400"; d="scan'208";a="442565087" Received: from tomeara-mobl.ger.corp.intel.com (HELO [10.213.211.66]) ([10.213.211.66]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2021 07:19:49 -0700 To: Tejas Upadhyay , intel-gfx@lists.freedesktop.org, mahesh.meena@intel.com, DRI Development References: <20210525135508.244659-1-tejaskumarx.surendrakumar.upadhyay@intel.com> <20210525135508.244659-2-tejaskumarx.surendrakumar.upadhyay@intel.com> From: Tvrtko Ursulin Organization: Intel Corporation UK Plc Message-ID: Date: Tue, 25 May 2021 15:19:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210525135508.244659-2-tejaskumarx.surendrakumar.upadhyay@intel.com> Content-Language: en-US Subject: Re: [Intel-gfx] [PATCH 1/1] Let userspace know if they can trust timeslicing by including it as part of the I915_PARAM_HAS_SCHEDULER::I915_SCHEDULER_CAP_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: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" + dri-devel as per process On 25/05/2021 14:55, Tejas Upadhyay wrote: > v2: Only declare timeslicing if we can safely preempt userspace. Commit message got butchered up somehow so you'll need to fix that at some point. Regards, Tvrtko > Fixes: 8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing") > Signed-off-by: Chris Wilson > Cc: Tvrtko Ursulin > Reviewed-by: 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 3cca7ea2d6ea..12d165566ed2 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(TIMESLICE_BIT, 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 c2c7759b7d2e..af2212d6113c 100644 > --- a/include/uapi/drm/i915_drm.h > +++ b/include/uapi/drm/i915_drm.h > @@ -572,6 +572,7 @@ 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 > > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx