From patchwork Wed Aug 5 12:22:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11701843 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7A4A9913 for ; Wed, 5 Aug 2020 12:23:16 +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 644E222D2C for ; Wed, 5 Aug 2020 12:23:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 644E222D2C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 170DD6E5B4; Wed, 5 Aug 2020 12:23:00 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (unknown [77.68.26.236]) by gabe.freedesktop.org (Postfix) with ESMTPS id F30F46E598 for ; Wed, 5 Aug 2020 12:22:51 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 22039474-1500050 for multiple; Wed, 05 Aug 2020 13:22:33 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Wed, 5 Aug 2020 13:22:09 +0100 Message-Id: <20200805122231.23313-16-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200805122231.23313-1-chris@chris-wilson.co.uk> References: <20200805122231.23313-1-chris@chris-wilson.co.uk> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 15/37] drm/i915: Add list_for_each_entry_safe_continue_reverse 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: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Chris Wilson Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" One more list iterator variant, for when we want to unwind from inside one list iterator with the intention of restarting from the current entry as the new head of the list. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin Reviewed-by: Thomas Hellström --- drivers/gpu/drm/i915/i915_utils.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h index ef8db3aa75c7..3873834f2316 100644 --- a/drivers/gpu/drm/i915/i915_utils.h +++ b/drivers/gpu/drm/i915/i915_utils.h @@ -266,6 +266,12 @@ static inline int list_is_last_rcu(const struct list_head *list, return READ_ONCE(list->next) == head; } +#define list_for_each_entry_safe_continue_reverse(pos, n, head, member) \ + for (pos = list_prev_entry(pos, member), \ + n = list_prev_entry(pos, member); \ + &pos->member != (head); \ + pos = n, n = list_prev_entry(n, member)) + static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m) { unsigned long j = msecs_to_jiffies(m);