From patchwork Fri Nov 14 12:19:08 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Harrison X-Patchwork-Id: 5305491 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 1BA819FBB9 for ; Fri, 14 Nov 2014 12:19:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AB78B201BC for ; Fri, 14 Nov 2014 12:19:42 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id C9B5620176 for ; Fri, 14 Nov 2014 12:19:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 08C2A6EDCE; Fri, 14 Nov 2014 04:19:41 -0800 (PST) X-Original-To: Intel-GFX@lists.freedesktop.org Delivered-To: Intel-GFX@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 1842A6EDD2 for ; Fri, 14 Nov 2014 04:19:40 -0800 (PST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 14 Nov 2014 04:19:39 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,385,1413270000"; d="scan'208";a="636945138" Received: from johnharr-linux.isw.intel.com ([10.102.226.51]) by orsmga002.jf.intel.com with ESMTP; 14 Nov 2014 04:19:38 -0800 From: John.C.Harrison@Intel.com To: Intel-GFX@Lists.FreeDesktop.Org Date: Fri, 14 Nov 2014 12:19:08 +0000 Message-Id: <1415967559-17074-18-git-send-email-John.C.Harrison@Intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1415967559-17074-1-git-send-email-John.C.Harrison@Intel.com> References: <1415967559-17074-1-git-send-email-John.C.Harrison@Intel.com> Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ Subject: [Intel-gfx] [PATCH v2 17/28] drm/i915: Convert 'trace_irq' to use requests rather than seqnos X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: John Harrison Updated the trace_irq code to use requests instead of seqnos. This includes reference counting the request object to ensure it sticks around when required. Note that getting access to the reference counting functions means moving the inline i915_trace_irq_get() function from intel_ringbuffer.h to i915_drv.h. For: VIZ-4377 Signed-off-by: John Harrison --- drivers/gpu/drm/i915/i915_drv.h | 7 +++++++ drivers/gpu/drm/i915/i915_gem.c | 7 ++++--- drivers/gpu/drm/i915/i915_trace.h | 2 +- drivers/gpu/drm/i915/intel_ringbuffer.h | 8 +------- 4 files changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 3e745bb..2aa897c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3134,4 +3134,11 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms) } } +static inline void i915_trace_irq_get(struct intel_engine_cs *ring, + struct drm_i915_gem_request *req) +{ + if (ring->trace_irq_req == NULL && ring->irq_get(ring)) + i915_gem_request_assign(&ring->trace_irq_req, req); +} + #endif diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 2fab638..30fb486 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2800,10 +2800,11 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *ring) i915_gem_free_request(request); } - if (unlikely(ring->trace_irq_seqno && - i915_seqno_passed(seqno, ring->trace_irq_seqno))) { + if (unlikely(ring->trace_irq_req && + i915_seqno_passed(seqno, + i915_gem_request_get_seqno(ring->trace_irq_req)))) { ring->irq_put(ring); - ring->trace_irq_seqno = 0; + i915_gem_request_assign(&ring->trace_irq_req, NULL); } while (!list_empty(&ring->delayed_free_list)) { diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h index 2c0327b..2ade958 100644 --- a/drivers/gpu/drm/i915/i915_trace.h +++ b/drivers/gpu/drm/i915/i915_trace.h @@ -369,7 +369,7 @@ TRACE_EVENT(i915_gem_ring_dispatch, __entry->ring = ring->id; __entry->seqno = i915_gem_request_get_seqno(req); __entry->flags = flags; - i915_trace_irq_get(ring, __entry->seqno); + i915_trace_irq_get(ring, req); ), TP_printk("dev=%u, ring=%u, seqno=%u, flags=%x", diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 3af7b7c..15ec7c4 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -142,7 +142,7 @@ struct intel_engine_cs { unsigned irq_refcount; /* protected by dev_priv->irq_lock */ u32 irq_enable_mask; /* bitmask to enable ring interrupt */ - u32 trace_irq_seqno; + struct drm_i915_gem_request *trace_irq_req; bool __must_check (*irq_get)(struct intel_engine_cs *ring); void (*irq_put)(struct intel_engine_cs *ring); @@ -440,12 +440,6 @@ intel_ring_get_request(struct intel_engine_cs *ring) return ring->outstanding_lazy_request; } -static inline void i915_trace_irq_get(struct intel_engine_cs *ring, u32 seqno) -{ - if (ring->trace_irq_seqno == 0 && ring->irq_get(ring)) - ring->trace_irq_seqno = seqno; -} - /* DRI warts */ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size);