From mboxrd@z Thu Jan 1 00:00:00 1970 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 1ED77D2ED12 for ; Tue, 20 Jan 2026 10:57:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CB13C10E5B7; Tue, 20 Jan 2026 10:57:13 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="kqsHKQNG"; dkim-atps=neutral Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) by gabe.freedesktop.org (Postfix) with ESMTPS id 78B1710E5B7 for ; Tue, 20 Jan 2026 10:57:07 +0000 (UTC) Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-4801eb2c0a5so33193985e9.3 for ; Tue, 20 Jan 2026 02:57:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768906626; x=1769511426; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=GLWyZeyXsbIZSumeJDMiBvdpxO3idF+WenF3yOzVdKw=; b=kqsHKQNGumDOyGtcw5bDYPuiMQyV7Fh/nzfw6G4n5enwPiNOnC49glGhcRNSTYPpCZ KEcdVq59f1x10UqtccD9nAIi1GvaHVp5TmC547ST9k1fGkRUD8WfGLIGD3mlAsMJU2xx MtfJiNSpuroopHqPI4XFq4OF6y6gP2JBC0Hzdd5miUW6zfXXig9tnmU1fBsWHw+JWTE3 clsGV+KAJzgAaK9XuacqqSJVaUP5GhDgCqkMnnNbwoKrGp/XgXPnXgfLZm/CkNhTXiqJ sGYjOdMml6pttFrjzbPqYj8z+qqQ0+OUDCOnjeZqVsvVWJafu5uJ/YOcWbgHfxls3ONd ro7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768906626; x=1769511426; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=GLWyZeyXsbIZSumeJDMiBvdpxO3idF+WenF3yOzVdKw=; b=Tdr1/EdFO+TSsxXDGcyazyBUkARGR1y3FBsOuArevuJuQEgbCqeohT7g9bn0HjsxBF iWdyfGTOmhyIJ+U+/iRfcJWQWAHa+cPrK9jVQrtV9PJzjzqVnYsUhb2dB/52pZV8L2gW mQeKf2nvyjix9/SwlKurY4QqfJDd79xogTn5o5keuh22NIRDXFewkytMwKstcpRohF0X cFAC8dxND6Wu/sqh0fK5TtwY46OtAuUghA1rL3axNQ8NyMWeqOX+xFkY5KMHuj8e02p5 B7d5ln4FLg0ww24LAuYv59jd8p8KfTtT3shw02itVAHo4HAIeoZF8JPAtTqGcxyK+av0 MF5Q== X-Gm-Message-State: AOJu0YxD+05Ek3jhwsqkY5/7SyGIZpNkG60JGaHolXkVwHl0arQIZIy3 LIFx/aTmvDV7DATixcx6UdJryaTwUxLV/94rWjJ7/P00brT3rBUox24Q X-Gm-Gg: AY/fxX64D4GzUvzKSOzgxRX7yo0CMe31L7/7H8aJoIgUmOg5+yS31p6NmK27Mst6Yy4 2uprC8Ruzo1JBRzjfZUqgliINoo0QR+cAu2YswGkDTRwDkJZi4C8rIZx5DUpc/6hQRetIfr/y69 GbcGHaGf8ucLhSydYsR+TGiYo3wWrXrAJDYFh/SK3trqW09I42TOHOAwYsDCIa2gxvDUNjBQDbq RxDLG2LnJIZgYpKJVR2bx0coVLI1DgLgMxCIwNGnF2HqjH5kmcfM23CZymLz1YH9Xd1fnJVI4Fr extZ82O3xz8h9rIAUqEVdVf8E7oU/XkHmFDz0ZD8c4a4ELhKTe5x79xxlUCyi1nbPDaw8M+JO+z 99UQHZ7uuPZwh4gfb6RDk3R9MLW3R6RAPlrQ8OygomCk2+HdWprlBDm6lr4ruhqG5RleZokoQgb N7VW2zu57q10AnwXQxwlZubUbD X-Received: by 2002:a05:600d:644f:10b0:47b:da85:b9ef with SMTP id 5b1f17b1804b1-4801e2fef40mr157647125e9.16.1768906625921; Tue, 20 Jan 2026 02:57:05 -0800 (PST) Received: from able.fritz.box ([2a00:e180:1563:d000:1067:f6c4:3bf8:ea8a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4801fe67780sm99418105e9.16.2026.01.20.02.57.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 02:57:05 -0800 (PST) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=C3=B6nig?= To: phasta@mailbox.org, tursulin@ursulin.net, matthew.brost@intel.com, sumit.semwal@linaro.org Cc: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Subject: [PATCH 9/9] dma-buf: use inline lock for the dma-fence-chain Date: Tue, 20 Jan 2026 11:54:48 +0100 Message-ID: <20260120105655.7134-10-christian.koenig@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260120105655.7134-1-christian.koenig@amd.com> References: <20260120105655.7134-1-christian.koenig@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Using the inline lock is now the recommended way for dma_fence implementations. So use this approach for the framework's internal fences as well. Also saves about 4 bytes for the external spinlock. Signed-off-by: Christian König Reviewed-by: Tvrtko Ursulin Reviewed-by: Philipp Stanner --- drivers/dma-buf/dma-fence-chain.c | 3 +-- include/linux/dma-fence-chain.h | 1 - 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c index a8a90acf4f34..a707792b6025 100644 --- a/drivers/dma-buf/dma-fence-chain.c +++ b/drivers/dma-buf/dma-fence-chain.c @@ -245,7 +245,6 @@ void dma_fence_chain_init(struct dma_fence_chain *chain, struct dma_fence_chain *prev_chain = to_dma_fence_chain(prev); uint64_t context; - spin_lock_init(&chain->lock); rcu_assign_pointer(chain->prev, prev); chain->fence = fence; chain->prev_seqno = 0; @@ -261,7 +260,7 @@ void dma_fence_chain_init(struct dma_fence_chain *chain, seqno = max(prev->seqno, seqno); } - dma_fence_init64(&chain->base, &dma_fence_chain_ops, &chain->lock, + dma_fence_init64(&chain->base, &dma_fence_chain_ops, NULL, context, seqno); /* diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h index 68c3c1e41014..d39ce7a2e599 100644 --- a/include/linux/dma-fence-chain.h +++ b/include/linux/dma-fence-chain.h @@ -46,7 +46,6 @@ struct dma_fence_chain { */ struct irq_work work; }; - spinlock_t lock; }; -- 2.43.0