From patchwork Tue Oct 24 16:07:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 13435054 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9BFD3C00A8F for ; Tue, 24 Oct 2023 16:12:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 53A5E10E422; Tue, 24 Oct 2023 16:12:05 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8D38E10E40D; Tue, 24 Oct 2023 16:12:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698163921; x=1729699921; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=5GDvJD6iQ0dI3ndzQ1pnqCYM145L2PPps9Ux1wYqtB8=; b=RLfroejUIEvDocCW9+Hj32hu+CuWJbMNrP8BoiLQqzmivaDKoFqV99p+ PM4DZ8mcRJtiWZA+N7HYLmCUBJvw0/H/NMeR2p2qel3zLzZ7xMVhLyQWz IrIDwIgiNExwALQwbsPSqkS3qspvhg6sD/Fiva6G3ySycGrwhQH8MbM/i ZThh3vIunG07KnEa5L96ZQ4SVl6ysFtnR+f/zR6gwkTkLR8Y30got6BJ/ fKPp2G3NyRlZjdKcKsPe0IQzIAh3GqoNqV75vqttR/mkNIHJDx5n8uogk z6UN4Vz3rOabCIgS2Wrg1bFF/eYn7yVLeAhZ7+VfC8/sK4urRETP/I7DQ w==; X-IronPort-AV: E=McAfee;i="6600,9927,10873"; a="451328154" X-IronPort-AV: E=Sophos;i="6.03,248,1694761200"; d="scan'208";a="451328154" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2023 09:07:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10873"; a="902237232" X-IronPort-AV: E=Sophos;i="6.03,248,1694761200"; d="scan'208";a="902237232" Received: from aidenbar-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.213.219.125]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2023 09:05:27 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [RFC 4/8] drm/cgroup: Add over budget signalling callback Date: Tue, 24 Oct 2023 17:07:23 +0100 Message-Id: <20231024160727.282960-5-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231024160727.282960-1-tvrtko.ursulin@linux.intel.com> References: <20231024160727.282960-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Clark , Brian Welty , Kenny.Ho@amd.com, Tvrtko Ursulin , Daniel Vetter , Johannes Weiner , linux-kernel@vger.kernel.org, =?utf-8?q?St=C3=A9phane_Marchesin?= , =?utf-8?q?Chris?= =?utf-8?q?tian_K=C3=B6nig?= , Zefan Li , Dave Airlie , Tejun Heo , cgroups@vger.kernel.org, "T . J . Mercier" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Tvrtko Ursulin Add a new callback via which the drm cgroup controller is notifying the drm core that a certain process is above its allotted GPU time. Signed-off-by: Tvrtko Ursulin --- include/drm/drm_drv.h | 8 ++++++++ kernel/cgroup/drm.c | 16 ++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index d1cee5899cde..c518f03b9f0f 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -173,6 +173,14 @@ struct drm_cgroup_ops { * Used by the DRM core when queried by the DRM cgroup controller. */ u64 (*active_time_us) (struct drm_file *); + + /** + * @signal_budget: + * + * Optional callback used by the DRM core to forward over/under GPU time + * messages sent by the DRM cgroup controller. + */ + int (*signal_budget) (struct drm_file *, u64 used, u64 budget); }; /** diff --git a/kernel/cgroup/drm.c b/kernel/cgroup/drm.c index acdb76635b60..68f31797c4f0 100644 --- a/kernel/cgroup/drm.c +++ b/kernel/cgroup/drm.c @@ -51,6 +51,22 @@ static u64 drmcs_get_active_time_us(struct drm_cgroup_state *drmcs) return total; } +static void +drmcs_signal_budget(struct drm_cgroup_state *drmcs, u64 usage, u64 budget) +{ + struct drm_file *fpriv; + + lockdep_assert_held(&drmcg_mutex); + + list_for_each_entry(fpriv, &drmcs->clients, clink) { + const struct drm_cgroup_ops *cg_ops = + fpriv->minor->dev->driver->cg_ops; + + if (cg_ops && cg_ops->signal_budget) + cg_ops->signal_budget(fpriv, usage, budget); + } +} + static void drmcs_free(struct cgroup_subsys_state *css) { struct drm_cgroup_state *drmcs = css_to_drmcs(css);