From patchwork Fri Feb 17 22:33:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Harrison X-Patchwork-Id: 13145297 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 71BA6C05027 for ; Fri, 17 Feb 2023 22:33:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 07C5610E1F8; Fri, 17 Feb 2023 22:33:51 +0000 (UTC) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3C26C10E46F; Fri, 17 Feb 2023 22:33:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676673230; x=1708209230; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zM8O8R67nZiRxPM8n1Fh3D857QGVC0L/ZJLCs+33Ofg=; b=diSbCUgVQRnxuckkF4kBaV8TRxynehHYwHeaGVYvMLHzAiLmb6UoPA2h WxAZXaQj8Vx28i56at5pkZe1ok8EVVLqpLMyFkJ6alo5udt6es14+inkF jItFNBiTjgVcBujqIXoB4MQ6U6b9VzcMEbrzkTc/M1prFSp0+cqOeUaA5 8oC8PE75VaShS/ohoENfmnvNlp70wfTJwTGRF1wKXXGv0dWNp3GhMJJYk mH2jJrBYsymUZNKGSAFLAdPnQhaNPQDJPfpr4Rbub1++3siy36xfN05eH bEpfFfhRpd79ypiu555eYd2KW1TJwYcI7n0xbfJU9OpKFJOBUHCYWgW/4 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10624"; a="320211571" X-IronPort-AV: E=Sophos;i="5.97,306,1669104000"; d="scan'208";a="320211571" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Feb 2023 14:33:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10624"; a="664021159" X-IronPort-AV: E=Sophos;i="5.97,306,1669104000"; d="scan'208";a="664021159" Received: from relo-linux-5.jf.intel.com ([10.165.21.152]) by orsmga007.jf.intel.com with ESMTP; 17 Feb 2023 14:33:49 -0800 From: John.C.Harrison@Intel.com To: Intel-GFX@Lists.FreeDesktop.Org Subject: [PATCH v2 1/2] drm/i915/guc: Improve clean up of busyness stats worker Date: Fri, 17 Feb 2023 14:33:07 -0800 Message-Id: <20230217223308.3449737-2-John.C.Harrison@Intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230217223308.3449737-1-John.C.Harrison@Intel.com> References: <20230217223308.3449737-1-John.C.Harrison@Intel.com> MIME-Version: 1.0 Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ 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: John Harrison , DRI-Devel@Lists.FreeDesktop.Org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: John Harrison The stats worker thread management was mis-matched between enable/disable call sites. Fix those up. Also, abstract the cancel/enable code into a helper function rather than replicating in multiple places. v2: Rename the helpers and wrap the enable as well as the cancel (review feedback from Daniele). Signed-off-by: John Harrison Reviewed-by: Daniele Ceraolo Spurio --- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 38 +++++++++++-------- 1 file changed, 23 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index be495e657d66b..a04d7049a2c2f 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -1352,6 +1352,16 @@ static ktime_t guc_engine_busyness(struct intel_engine_cs *engine, ktime_t *now) return ns_to_ktime(total); } +static void guc_enable_busyness_worker(struct intel_guc *guc) +{ + mod_delayed_work(system_highpri_wq, &guc->timestamp.work, guc->timestamp.ping_delay); +} + +static void guc_cancel_busyness_worker(struct intel_guc *guc) +{ + cancel_delayed_work_sync(&guc->timestamp.work); +} + static void __reset_guc_busyness_stats(struct intel_guc *guc) { struct intel_gt *gt = guc_to_gt(guc); @@ -1360,7 +1370,7 @@ static void __reset_guc_busyness_stats(struct intel_guc *guc) unsigned long flags; ktime_t unused; - cancel_delayed_work_sync(&guc->timestamp.work); + guc_cancel_busyness_worker(guc); spin_lock_irqsave(&guc->timestamp.lock, flags); @@ -1416,8 +1426,7 @@ static void guc_timestamp_ping(struct work_struct *wrk) intel_gt_reset_unlock(gt, srcu); - mod_delayed_work(system_highpri_wq, &guc->timestamp.work, - guc->timestamp.ping_delay); + guc_enable_busyness_worker(guc); } static int guc_action_enable_usage_stats(struct intel_guc *guc) @@ -1436,16 +1445,15 @@ static void guc_init_engine_stats(struct intel_guc *guc) { struct intel_gt *gt = guc_to_gt(guc); intel_wakeref_t wakeref; + int ret; - mod_delayed_work(system_highpri_wq, &guc->timestamp.work, - guc->timestamp.ping_delay); - - with_intel_runtime_pm(>->i915->runtime_pm, wakeref) { - int ret = guc_action_enable_usage_stats(guc); + with_intel_runtime_pm(>->i915->runtime_pm, wakeref) + ret = guc_action_enable_usage_stats(guc); - if (ret) - guc_err(guc, "Failed to enable usage stats: %pe\n", ERR_PTR(ret)); - } + if (ret) + guc_err(guc, "Failed to enable usage stats: %pe\n", ERR_PTR(ret)); + else + guc_enable_busyness_worker(guc); } void intel_guc_busyness_park(struct intel_gt *gt) @@ -1460,7 +1468,7 @@ void intel_guc_busyness_park(struct intel_gt *gt) * and causes an unclaimed register access warning. Cancel the worker * synchronously here. */ - cancel_delayed_work_sync(&guc->timestamp.work); + guc_cancel_busyness_worker(guc); /* * Before parking, we should sample engine busyness stats if we need to. @@ -1487,8 +1495,7 @@ void intel_guc_busyness_unpark(struct intel_gt *gt) spin_lock_irqsave(&guc->timestamp.lock, flags); guc_update_pm_timestamp(guc, &unused); spin_unlock_irqrestore(&guc->timestamp.lock, flags); - mod_delayed_work(system_highpri_wq, &guc->timestamp.work, - guc->timestamp.ping_delay); + guc_enable_busyness_worker(guc); } static inline bool @@ -4408,11 +4415,12 @@ void intel_guc_submission_enable(struct intel_guc *guc) guc_init_global_schedule_policy(guc); } +/* Note: By the time we're here, GuC may have already been reset */ void intel_guc_submission_disable(struct intel_guc *guc) { struct intel_gt *gt = guc_to_gt(guc); - /* Note: By the time we're here, GuC may have already been reset */ + guc_cancel_busyness_worker(guc); /* Disable and route to host */ if (GRAPHICS_VER(gt->i915) >= 12)