From patchwork Thu Nov 24 13:22:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joonas Lahtinen X-Patchwork-Id: 9445447 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2929E60235 for ; Thu, 24 Nov 2016 13:22:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 050AD27D8D for ; Thu, 24 Nov 2016 13:22:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EC6F427F82; Thu, 24 Nov 2016 13:22:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 697E027D8D for ; Thu, 24 Nov 2016 13:22:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 91ED86EA63; Thu, 24 Nov 2016 13:22:16 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 608C56EA63 for ; Thu, 24 Nov 2016 13:22:15 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP; 24 Nov 2016 05:22:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,543,1473145200"; d="scan'208";a="8900948" Received: from jlahtine-desk.ger.corp.intel.com ([10.252.22.50]) by orsmga002.jf.intel.com with ESMTP; 24 Nov 2016 05:22:13 -0800 From: Joonas Lahtinen To: Intel graphics driver community testing & development Date: Thu, 24 Nov 2016 15:22:09 +0200 Message-Id: <1479993730-17577-1-git-send-email-joonas.lahtinen@linux.intel.com> X-Mailer: git-send-email 2.7.4 Subject: [Intel-gfx] [PATCH 1/2] drm/i915: Rename i915_gem_timeline.next_seqno to .seqno 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-Virus-Scanned: ClamAV using ClamSMTP Rename i915_gem_timeline member 'next_seqno' into 'seqno' as the variable is pre-increment. We've already had two bugs due to the confusing name, second is fixed as follow-up patch. Cc: Chris Wilson Signed-off-by: Joonas Lahtinen Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/i915_debugfs.c | 4 ++-- drivers/gpu/drm/i915/i915_gem_request.c | 14 +++++++------- drivers/gpu/drm/i915/i915_gem_timeline.h | 2 +- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index f769aab..3b4db55 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -552,7 +552,7 @@ static int i915_gem_pageflip_info(struct seq_file *m, void *data) seq_printf(m, "Flip queued on %s at seqno %x, next seqno %x [current breadcrumb %x], completed? %d\n", engine->name, work->flip_queued_req->global_seqno, - atomic_read(&dev_priv->gt.global_timeline.next_seqno), + atomic_read(&dev_priv->gt.global_timeline.seqno), intel_engine_get_seqno(engine), i915_gem_request_completed(work->flip_queued_req)); } else @@ -1026,7 +1026,7 @@ i915_next_seqno_get(void *data, u64 *val) { struct drm_i915_private *dev_priv = data; - *val = atomic_read(&dev_priv->gt.global_timeline.next_seqno); + *val = atomic_read(&dev_priv->gt.global_timeline.seqno); return 0; } diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 9f37eaa..8290459 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -330,11 +330,11 @@ static int i915_gem_init_global_seqno(struct drm_i915_private *i915, u32 seqno) GEM_BUG_ON(i915->gt.active_requests > 1); /* If the seqno wraps around, we need to clear the breadcrumb rbtree */ - if (!i915_seqno_passed(seqno, atomic_read(&timeline->next_seqno))) { + if (!i915_seqno_passed(seqno, atomic_read(&timeline->seqno))) { while (intel_breadcrumbs_busy(i915)) cond_resched(); /* spin until threads are complete */ } - atomic_set(&timeline->next_seqno, seqno); + atomic_set(&timeline->seqno, seqno); /* Finally reset hw state */ for_each_engine(engine, i915, id) @@ -369,11 +369,11 @@ int i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno) static int reserve_global_seqno(struct drm_i915_private *i915) { u32 active_requests = ++i915->gt.active_requests; - u32 next_seqno = atomic_read(&i915->gt.global_timeline.next_seqno); + u32 seqno = atomic_read(&i915->gt.global_timeline.seqno); int ret; /* Reservation is fine until we need to wrap around */ - if (likely(next_seqno + active_requests > next_seqno)) + if (likely(seqno + active_requests > seqno)) return 0; ret = i915_gem_init_global_seqno(i915, 0); @@ -387,13 +387,13 @@ static int reserve_global_seqno(struct drm_i915_private *i915) static u32 __timeline_get_seqno(struct i915_gem_timeline *tl) { - /* next_seqno only incremented under a mutex */ - return ++tl->next_seqno.counter; + /* seqno only incremented under a mutex */ + return ++tl->seqno.counter; } static u32 timeline_get_seqno(struct i915_gem_timeline *tl) { - return atomic_inc_return(&tl->next_seqno); + return atomic_inc_return(&tl->seqno); } void __i915_gem_request_submit(struct drm_i915_gem_request *request) diff --git a/drivers/gpu/drm/i915/i915_gem_timeline.h b/drivers/gpu/drm/i915/i915_gem_timeline.h index 98d99a6..f2e51f4 100644 --- a/drivers/gpu/drm/i915/i915_gem_timeline.h +++ b/drivers/gpu/drm/i915/i915_gem_timeline.h @@ -56,7 +56,7 @@ struct intel_timeline { struct i915_gem_timeline { struct list_head link; - atomic_t next_seqno; + atomic_t seqno; struct drm_i915_private *i915; const char *name;