From patchwork Thu Oct 19 12:52:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 13429062 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 87F8CC41513 for ; Thu, 19 Oct 2023 12:56:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=K1zS+RIwol4Ylpy0w92Fc/eB3Nha5HmfVtn5A1AXcqo=; b=UNd8fQqsrsXUCSw/8ejzlBDJlY 8/Dm6quvQytCn9v+XBL0Oosc2jLRrJ3NrJzBK/6zLmu8tjVM0E6i8Bp3yQI7N3WKTdVjwaOloHkYn wVGHd8gZMimFyKxWZ+UJ10QYeW9Emmmzo/K+Z6ZIc8Goup/gyjdvwviv8ieKGhD94KMqJ983F+caN 4DEBlRvNS0dDHg1WLZ+x2VAWSZx4KmYtjvN6MowXlAaY/FAMFHiCxHM286OjPB3mGB/MlW4HFhUMx QnZSAu6HxCqPi2m4eEk6DDWDRPWoRUcSs3KGvEghstWpxD+AijfC13OqUHXJaWYZSFrol8DJ4V8s3 aYTwdorw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qtSa6-00HRbn-1w; Thu, 19 Oct 2023 12:56:54 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qtSWS-00HNuy-1x; Thu, 19 Oct 2023 12:53:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=K1zS+RIwol4Ylpy0w92Fc/eB3Nha5HmfVtn5A1AXcqo=; b=CWc/ZysDhm15EYVAdSyF3BKTnx 4khhn0C0RiMMAwyoDern5LBfYm4U0/0CO9UuBubqe5L1odqiE43ryR1Izl4xrYKYGb2/Uw5zr4jFQ HChPRzlosXCy0WzO7qBnOJP/bdZIUJF6FaUSk1FQQzIltxrwWq8kJuQK4l9D7dsZEKjcEavN2lZrc HMXbPi4imW76ib1QalAj3d/x26oBo8vs2IBWCgldT8q8v8ZI4h5OO52J9RL4GK1s218o22TyFSMC0 TH/oxdXL+PT8Tw2jj7HbvDNIGSzvykeN5Ni+zXe9shgL2rIaTNjSxRd7XzG0TDnRWPf8Jht5gaFyz xSJlxCBA==; Received: from madras.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e5ab]) by desiato.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qtSWJ-009rZt-2y; Thu, 19 Oct 2023 12:53:07 +0000 Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:ccea:1fb5:34eb:239b]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 0E6496607398; Thu, 19 Oct 2023 13:52:58 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1697719978; bh=u0Q5LhMlMmzDnDRMmnfWjZ04KVEnwRGQKtzWOZE3C0U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a4EFl/ZScsZ1tgRMBSEXHdwQTB+9Eq6SIiml1p7uNEgjK8eB4h4/XMW9RU0uJiAu2 OrIKd31eUFhKb+Y8oKf38XSBBuFkTlSXb/9DsfcuM3XcvCtDa6DAoX50W1FqS7JQil tQRgGOUQkikBRgmKNzRAqTKwWDMkIBkEjXeP7sj6prJVE2rEPlLFyTyN7CFXvi1A3P RLknuIVKnhtI8puYiZO8OSvL8/SY/4ffxmTwQARM3TlhEZCR7RUXUtgpU6pXL51w/5 ROdxwaQUCjp/0Bn4rCK5zfmbKVOuNIT29WlWra9WKREHG2VLO01Je5KD9OsCqhjsob 7hAzGjeSpvfPg== From: Benjamin Gaignard To: mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com, ming.qian@nxp.com, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, hverkuil-cisco@xs4all.nl, nicolas.dufresne@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v13 53/56] media: core: Free range of buffers Date: Thu, 19 Oct 2023 14:52:19 +0200 Message-Id: <20231019125222.21370-54-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231019125222.21370-1-benjamin.gaignard@collabora.com> References: <20231019125222.21370-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231019_135300_435557_AF336A0D X-CRM114-Status: GOOD ( 21.18 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Improve __vb2_queue_free() and __vb2_free_mem() to free range of buffers and not only the last few buffers. Intoduce starting index to be flexible on range and change the loops according to this parameters. Signed-off-by: Benjamin Gaignard --- .../media/common/videobuf2/videobuf2-core.c | 59 +++++++++---------- 1 file changed, 28 insertions(+), 31 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 6e88406fcae9..010a8bca0240 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory, /* * __vb2_free_mem() - release all video buffer memory for a given queue */ -static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers) +static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count) { - unsigned int buffer; + unsigned int i; struct vb2_buffer *vb; - unsigned int q_num_buffers = vb2_get_num_buffers(q); - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers; - ++buffer) { - vb = vb2_get_buffer(q, buffer); + for (i = start; i < q->max_num_buffers && i < start + count; i++) { + vb = vb2_get_buffer(q, i); if (!vb) continue; @@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers) } /* - * __vb2_queue_free() - free buffers at the end of the queue - video memory and + * __vb2_queue_free() - free count buffers from start index of the queue - video memory and * related information, if no buffers are left return the queue to an * uninitialized state. Might be called even if the queue has already been freed. */ -static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) +static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count) { - unsigned int buffer; - unsigned int q_num_buffers = vb2_get_num_buffers(q); + unsigned int i; lockdep_assert_held(&q->mmap_lock); /* Call driver-provided cleanup function for each buffer, if provided */ - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers; - ++buffer) { - struct vb2_buffer *vb = vb2_get_buffer(q, buffer); + for (i = start; i < q->max_num_buffers && i < start + count; i++) { + struct vb2_buffer *vb = vb2_get_buffer(q, i); - if (vb && vb->planes[0].mem_priv) + if (!vb) + continue; + if (vb->planes[0].mem_priv) call_void_vb_qop(vb, buf_cleanup, vb); } /* Release video buffer memory */ - __vb2_free_mem(q, buffers); + __vb2_free_mem(q, start, count); #ifdef CONFIG_VIDEO_ADV_DEBUG /* * Check that all the calls were balanced during the life-time of this * queue. If not then dump the counters to the kernel log. */ - if (q_num_buffers) { + if (vb2_get_num_buffers(q)) { bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming || q->cnt_prepare_streaming != q->cnt_unprepare_streaming || q->cnt_wait_prepare != q->cnt_wait_finish; @@ -596,8 +594,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) q->cnt_stop_streaming = 0; q->cnt_unprepare_streaming = 0; } - for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) { - struct vb2_buffer *vb = vb2_get_buffer(q, buffer); + for (i = start; i < q->max_num_buffers && i < start + count; i++) { + struct vb2_buffer *vb = vb2_get_buffer(q, i); bool unbalanced; if (!vb) @@ -614,7 +612,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) if (unbalanced) { pr_info("unbalanced counters for queue %p, buffer %d:\n", - q, buffer); + q, i); if (vb->cnt_buf_init != vb->cnt_buf_cleanup) pr_info(" buf_init: %u buf_cleanup: %u\n", vb->cnt_buf_init, vb->cnt_buf_cleanup); @@ -648,9 +646,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) #endif /* Free vb2 buffers */ - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers; - ++buffer) { - struct vb2_buffer *vb = vb2_get_buffer(q, buffer); + for (i = start; i < q->max_num_buffers && i < start + count; i++) { + struct vb2_buffer *vb = vb2_get_buffer(q, i); if (!vb) continue; @@ -690,7 +687,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use); static bool __buffers_in_use(struct vb2_queue *q) { unsigned int buffer; - for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) { + for (buffer = 0; buffer < q->max_num_buffers; ++buffer) { struct vb2_buffer *vb = vb2_get_buffer(q, buffer); if (!vb) @@ -850,7 +847,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, * queued without ever calling STREAMON. */ __vb2_queue_cancel(q); - __vb2_queue_free(q, q_num_bufs); + __vb2_queue_free(q, 0, q->max_num_buffers); mutex_unlock(&q->mmap_lock); /* @@ -960,7 +957,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, * from already queued buffers and it will reset q->memory to * VB2_MEMORY_UNKNOWN. */ - __vb2_queue_free(q, allocated_buffers); + __vb2_queue_free(q, first_index, allocated_buffers); mutex_unlock(&q->mmap_lock); return ret; } @@ -1000,7 +997,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, bool no_previous_buffers = !q_num_bufs; int ret = 0; - if (q->num_buffers == q->max_num_buffers) { + if (q_num_bufs == q->max_num_buffers) { dprintk(q, 1, "maximum number of buffers already allocated\n"); return -ENOBUFS; } @@ -1100,7 +1097,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, * from already queued buffers and it will reset q->memory to * VB2_MEMORY_UNKNOWN. */ - __vb2_queue_free(q, allocated_buffers); + __vb2_queue_free(q, *first_index, allocated_buffers); mutex_unlock(&q->mmap_lock); return -ENOMEM; } @@ -1714,7 +1711,7 @@ static int vb2_start_streaming(struct vb2_queue *q) * Forcefully reclaim buffers if the driver did not * correctly return them to vb2. */ - for (i = 0; i < vb2_get_num_buffers(q); ++i) { + for (i = 0; i < q->max_num_buffers; ++i) { vb = vb2_get_buffer(q, i); if (!vb) @@ -2120,7 +2117,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q) * to vb2 in stop_streaming(). */ if (WARN_ON(atomic_read(&q->owned_by_drv_count))) { - for (i = 0; i < vb2_get_num_buffers(q); i++) { + for (i = 0; i < q->max_num_buffers; i++) { struct vb2_buffer *vb = vb2_get_buffer(q, i); if (!vb) @@ -2164,7 +2161,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q) * call to __fill_user_buffer() after buf_finish(). That order can't * be changed, so we can't move the buf_finish() to __vb2_dqbuf(). */ - for (i = 0; i < vb2_get_num_buffers(q); i++) { + for (i = 0; i < q->max_num_buffers; i++) { struct vb2_buffer *vb; struct media_request *req; @@ -2568,7 +2565,7 @@ void vb2_core_queue_release(struct vb2_queue *q) __vb2_cleanup_fileio(q); __vb2_queue_cancel(q); mutex_lock(&q->mmap_lock); - __vb2_queue_free(q, q->max_num_buffers); + __vb2_queue_free(q, 0, q->max_num_buffers); kfree(q->bufs); q->bufs = NULL; bitmap_free(q->bufs_bitmap);