From patchwork Tue Jun 8 09:28:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Hellstr=C3=B6m?= X-Patchwork-Id: 12306117 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 1469EC4743D for ; Tue, 8 Jun 2021 09:29:15 +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 D9B7161263 for ; Tue, 8 Jun 2021 09:29:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9B7161263 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 F07796EB65; Tue, 8 Jun 2021 09:29:08 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id C27CA6EB5F; Tue, 8 Jun 2021 09:29:07 +0000 (UTC) IronPort-SDR: KXwN9s07F6CXvMsaNQ2fE+Blb066GCvOXJSSMtQfIx+7lmje8i3vpY+Ew9eHdyznZ0kPiAD6jp Iq3XfNrNUbNg== X-IronPort-AV: E=McAfee;i="6200,9189,10008"; a="226150954" X-IronPort-AV: E=Sophos;i="5.83,257,1616482800"; d="scan'208";a="226150954" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2021 02:29:07 -0700 IronPort-SDR: yF4Xv33vq6UinavSYKYTP+vzE9SeG/xd+XLxS/A5a+qJ7BDzDt2wVSKQuWuLdjV/mxwXu5q13E wtd1OhVQeQ9g== X-IronPort-AV: E=Sophos;i="5.83,257,1616482800"; d="scan'208";a="551544388" Received: from mkayyal-mobl.ger.corp.intel.com (HELO thellst-mobl1.intel.com) ([10.249.254.115]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2021 02:29:05 -0700 From: =?utf-8?q?Thomas_Hellstr=C3=B6m?= To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Tue, 8 Jun 2021 11:28:40 +0200 Message-Id: <20210608092846.64198-4-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210608092846.64198-1-thomas.hellstrom@linux.intel.com> References: <20210608092846.64198-1-thomas.hellstrom@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/9] drm/i915: Introduce a ww transaction helper 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: matthew.auld@intel.com, =?utf-8?q?Thomas_Hellstr=C3=B6m?= Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Introduce a for_i915_gem_ww(){} utility to help make the code around a ww transaction more readable. Signed-off-by: Thomas Hellström Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/i915_gem_ww.h | 31 +++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_ww.h b/drivers/gpu/drm/i915/i915_gem_ww.h index f2d8769e4118..f6b1a796667b 100644 --- a/drivers/gpu/drm/i915/i915_gem_ww.h +++ b/drivers/gpu/drm/i915/i915_gem_ww.h @@ -11,11 +11,40 @@ struct i915_gem_ww_ctx { struct ww_acquire_ctx ctx; struct list_head obj_list; struct drm_i915_gem_object *contended; - bool intr; + unsigned short intr; + unsigned short loop; }; void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ctx, bool intr); void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ctx); int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ctx); void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj); + +/* Internal functions used by the inlines! Don't use. */ +static inline int __i915_gem_ww_fini(struct i915_gem_ww_ctx *ww, int err) +{ + ww->loop = 0; + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(ww); + if (!err) + ww->loop = 1; + } + + if (!ww->loop) + i915_gem_ww_ctx_fini(ww); + + return err; +} + +static inline void +__i915_gem_ww_init(struct i915_gem_ww_ctx *ww, bool intr) +{ + i915_gem_ww_ctx_init(ww, intr); + ww->loop = 1; +} + +#define for_i915_gem_ww(_ww, _err, _intr) \ + for (__i915_gem_ww_init(_ww, _intr); (_ww)->loop; \ + _err = __i915_gem_ww_fini(_ww, _err)) + #endif