From nobody Sat Feb 7 16:05:43 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3541EB64D9 for ; Wed, 12 Jul 2023 11:50:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233548AbjGLLun (ORCPT ); Wed, 12 Jul 2023 07:50:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232949AbjGLLuV (ORCPT ); Wed, 12 Jul 2023 07:50:21 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C11EF2D67; Wed, 12 Jul 2023 04:48:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689162537; x=1720698537; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kM9l0LXRkjwWq8z/0hy9Jjk2cNeETa5i5cqsx7QQ/WI=; b=kzmoulGVK9gAHUSlqqcdgu3fgPJIrhn+CSc17x2ol8oVe9NEQENkrDSi cIzvDJ8t472xHowE0ZhfrffYjCYqemQSW9hlUvsiE5eimDX9bFoDDOqEq JWujUHPfWXI0VOrUl3IKjHz8bW8LySHt0QA7pB9bNX9TGSSLiWOU70ykw w6inGR+b1fDTqYISrVwPB0fjIDa1cv5scAHAMDB2HLIYqtTEC/4p9/1n+ kpoi3LQvShEYhX00i3EhScosNnjuQ0Z48aiEy3Ljr+zeTe7KIjhon7FQd owa4Bz7vZF72emsj/dXRdWcHe4/OAMWHYG7XrD/eAWjI+jseHBy3Dq7nW A==; X-IronPort-AV: E=McAfee;i="6600,9927,10768"; a="344469276" X-IronPort-AV: E=Sophos;i="6.01,199,1684825200"; d="scan'208";a="344469276" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2023 04:46:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10768"; a="866094126" X-IronPort-AV: E=Sophos;i="6.01,199,1684825200"; d="scan'208";a="866094126" Received: from eamonnob-mobl1.ger.corp.intel.com (HELO localhost.localdomain) ([10.213.237.202]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2023 04:46:51 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Tejun Heo , Johannes Weiner , Zefan Li , Dave Airlie , Daniel Vetter , Rob Clark , =?UTF-8?q?St=C3=A9phane=20Marchesin?= , "T . J . Mercier" , Kenny.Ho@amd.com, =?UTF-8?q?Christian=20K=C3=B6nig?= , Brian Welty , Tvrtko Ursulin Subject: [PATCH 10/17] drm/cgroup: Add over budget signalling callback Date: Wed, 12 Jul 2023 12:45:58 +0100 Message-Id: <20230712114605.519432-11-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230712114605.519432-1-tvrtko.ursulin@linux.intel.com> References: <20230712114605.519432-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 3116fa4dbc48..29e11a87bf75 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -167,6 +167,14 @@ 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); }; =20 /** 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_st= ate *drmcs) return total; } =20 +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 =3D + 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 =3D css_to_drmcs(css); --=20 2.39.2