From patchwork Mon Sep 13 13:16:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christian_K=C3=B6nig?= X-Patchwork-Id: 12489433 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=-13.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 C6D43C433F5 for ; Mon, 13 Sep 2021 13:52:28 +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 985FD615E6 for ; Mon, 13 Sep 2021 13:52:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 985FD615E6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7E90B6EAA4; Mon, 13 Sep 2021 13:52:16 +0000 (UTC) Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8F28D6E193; Mon, 13 Sep 2021 13:17:21 +0000 (UTC) Received: by mail-wr1-x42a.google.com with SMTP id t8so9615258wrq.4; Mon, 13 Sep 2021 06:17:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UXwMb5OzeQZCq2ep7DQI78NOviskj8HdDAhnVXfOFMU=; b=LQIuxs2NluvtAbILKztkthcoLKkqD6fyLabolUUj647rumDSoPZx0BeMEvboQ+otzy BJWXRJbhsrllWKo8MHY+kg0rQV6ZQz1jBoo4flqC+Jf12xv7pvy9hBZeVBStFeSM0OEl vSCO6Pb1oowtrRQI7Oc49+ul3KFm8QsBr7MeMFSWWLmxd/xrqtwK+AA6U9IkVMkm7JfP xpKxgXLPHIGnosFmvOPCa2ZzDdq/26DoXKxqZ7Qfb5/6XQRBoPqqbcezehbE1vtdXyMq 56wSMp66QCJ03AA4sGtZU3tHVWz7BK/HJBLJ4HZq8xQvLF6rOg35EdEnSOVzy67ANWOU OT6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UXwMb5OzeQZCq2ep7DQI78NOviskj8HdDAhnVXfOFMU=; b=y1Q+BPk16aQAEPLOw9uj8rGPXk4Ld8B+8c5Oog2tOvfxbwCZVHz5w+ellwQAyhGVHQ kvnHIqb7Boz72yo0j29SGAriUI2oIGNyI5b2tv9JhKjsn0ytZpKEwMEENHXtsJ0GSmsF 5ta6ZhI72HztE/5OT0ODWbaJxVWJwXiukALuuRumRlyNlhxzUdySyDQ9QTmHPsMtvjlV Pvw0o054Av0gEA8Vg0nmKSwZcD63b/6k88f9cmle7B8iXjPK4HRYU0K1ry3mQgXK1IpP 8eyYhtDchjY+eZbgHqP13qbFWkYHd9pSoYBcgAyASwj7okpBdapn0B0dER3ixj66ehxC pzjg== X-Gm-Message-State: AOAM531n8/xgTUBCVHZPD+xR0MeKgOmCDaXBXKk0yIb3+N5xSFT+UNcR 2e2Ir/gFMaoQxXTBCfThGRIiNb1wNcD2aLoR X-Google-Smtp-Source: ABdhPJx5SFCa5irhc3GPkkSApCKQ8UhOmfrRvH0dWTDeu8jsU/lOtQoYl+gw39TN1DoV0crmMql88A== X-Received: by 2002:a5d:4b50:: with SMTP id w16mr12487586wrs.71.1631539039806; Mon, 13 Sep 2021 06:17:19 -0700 (PDT) Received: from abel.fritz.box (p5b0ea1b5.dip0.t-ipconnect.de. [91.14.161.181]) by smtp.gmail.com with ESMTPSA id h18sm7602834wrb.33.2021.09.13.06.17.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Sep 2021 06:17:19 -0700 (PDT) From: " =?utf-8?q?Christian_K=C3=B6nig?= " X-Google-Original-From: =?utf-8?q?Christian_K=C3=B6nig?= To: linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org Cc: daniel@ffwll.ch, intel-gfx@lists.freedesktop.org Date: Mon, 13 Sep 2021 15:16:46 +0200 Message-Id: <20210913131707.45639-6-christian.koenig@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210913131707.45639-1-christian.koenig@amd.com> References: <20210913131707.45639-1-christian.koenig@amd.com> MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 13 Sep 2021 13:52:14 +0000 Subject: [Intel-gfx] [PATCH 05/26] dma-buf: use new iterator in dma_resv_wait_timeout 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This makes the function much simpler since the complex retry logic is now handled elsewhere. Signed-off-by: Christian König --- drivers/dma-buf/dma-resv.c | 64 +++++--------------------------------- 1 file changed, 7 insertions(+), 57 deletions(-) diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c index 0a0e3ee62648..3ce929b770ea 100644 --- a/drivers/dma-buf/dma-resv.c +++ b/drivers/dma-buf/dma-resv.c @@ -571,74 +571,24 @@ long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr, unsigned long timeout) { long ret = timeout ? timeout : 1; - unsigned int seq, shared_count; + struct dma_resv_cursor cursor; struct dma_fence *fence; - int i; -retry: - shared_count = 0; - seq = read_seqcount_begin(&obj->seq); rcu_read_lock(); - i = -1; - - fence = dma_resv_excl_fence(obj); - if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) { - if (!dma_fence_get_rcu(fence)) - goto unlock_retry; + dma_resv_for_each_fence_unlocked(obj, &cursor, wait_all, fence) { + rcu_read_unlock(); - if (dma_fence_is_signaled(fence)) { + ret = dma_fence_wait_timeout(fence, intr, ret); + if (ret <= 0) { dma_fence_put(fence); - fence = NULL; + return ret; } - } else { - fence = NULL; - } - - if (wait_all) { - struct dma_resv_list *fobj = dma_resv_shared_list(obj); - - if (fobj) - shared_count = fobj->shared_count; - - for (i = 0; !fence && i < shared_count; ++i) { - struct dma_fence *lfence; - - lfence = rcu_dereference(fobj->shared[i]); - if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, - &lfence->flags)) - continue; - - if (!dma_fence_get_rcu(lfence)) - goto unlock_retry; - - if (dma_fence_is_signaled(lfence)) { - dma_fence_put(lfence); - continue; - } - - fence = lfence; - break; - } + rcu_read_lock(); } - rcu_read_unlock(); - if (fence) { - if (read_seqcount_retry(&obj->seq, seq)) { - dma_fence_put(fence); - goto retry; - } - ret = dma_fence_wait_timeout(fence, intr, ret); - dma_fence_put(fence); - if (ret > 0 && wait_all && (i + 1 < shared_count)) - goto retry; - } return ret; - -unlock_retry: - rcu_read_unlock(); - goto retry; } EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);