From patchwork Thu May 6 19:13:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 12243027 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 A92C1C43460 for ; Thu, 6 May 2021 18:58:23 +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 7BCC4610D2 for ; Thu, 6 May 2021 18:58:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7BCC4610D2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0E76E6ECF2; Thu, 6 May 2021 18:57:18 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 143E96ECEE; Thu, 6 May 2021 18:57:11 +0000 (UTC) IronPort-SDR: 0NtGNn88EFV9RJ+957XNdAj53S1cRBReRKW6woRoq79yDzNgBV4lNldYKp5RC1UrfnJWgfWlBF idfQODqm0Z2g== X-IronPort-AV: E=McAfee;i="6200,9189,9976"; a="196530992" X-IronPort-AV: E=Sophos;i="5.82,278,1613462400"; d="scan'208";a="196530992" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2021 11:57:10 -0700 IronPort-SDR: bE/2ginFgcR/qqZGKogW2QfGYab2XCxhprCToFtc5hV7/v1EZBS4EsTEIIbB+k8m+t4JFANj7p Ed33HpdWN/zg== X-IronPort-AV: E=Sophos;i="5.82,278,1613462400"; d="scan'208";a="469583409" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2021 11:57:08 -0700 From: Matthew Brost To: , Subject: [RFC PATCH 17/97] drm/i915/guc: Stop using mutex while sending CTB messages Date: Thu, 6 May 2021 12:13:31 -0700 Message-Id: <20210506191451.77768-18-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210506191451.77768-1-matthew.brost@intel.com> References: <20210506191451.77768-1-matthew.brost@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: matthew.brost@intel.com, tvrtko.ursulin@intel.com, daniele.ceraolospurio@intel.com, jason.ekstrand@intel.com, jon.bloomfield@intel.com, daniel.vetter@intel.com, john.c.harrison@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Michal Wajdeczko We are no longer using descriptor to hold G2H replies and we are protecting access to the descriptor and command buffer by the separate spinlock, so we can stop using mutex. Signed-off-by: Michal Wajdeczko Signed-off-by: Matthew Brost Reviewed-by: Matthew Brost --- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index bee0958d8bae..cb58fa7f970c 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -537,7 +537,6 @@ static int ct_send(struct intel_guc_ct *ct, int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len, u32 *response_buf, u32 response_buf_size) { - struct intel_guc *guc = ct_to_guc(ct); u32 status = ~0; /* undefined */ int ret; @@ -546,8 +545,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len, return -ENODEV; } - mutex_lock(&guc->send_mutex); - ret = ct_send(ct, action, len, response_buf, response_buf_size, &status); if (unlikely(ret < 0)) { CT_ERROR(ct, "Sending action %#x failed (err=%d status=%#X)\n", @@ -557,7 +554,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len, action[0], ret, ret); } - mutex_unlock(&guc->send_mutex); return ret; }