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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38EE8C77B75 for ; Mon, 8 May 2023 10:31:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234686AbjEHKbM (ORCPT ); Mon, 8 May 2023 06:31:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234690AbjEHKbF (ORCPT ); Mon, 8 May 2023 06:31:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73D9A24A8E for ; Mon, 8 May 2023 03:31:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E430A626CC for ; Mon, 8 May 2023 10:30:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F09B0C433D2; Mon, 8 May 2023 10:30:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683541859; bh=QpZGSFcUEdxc4V4AwY/r1ackKvIgcNwFVumQaCxvIpk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q2JPEKgIdPJS9oPGcMhK2wtPurPP3DmwcfsbZ1iZMo/8yvCMXU/ghZ70giH4ndMnN Arg4dsalMgTxIEeii+bXEcqWpZFGZlTi9tq9WI4oHnQ6TQiz3l7ikE4pwVjGeRvEUI k5tyawPTlnr5tItWM8hVUJCE4mkfWwkIUPTIeFxg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yunfei Dong , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 6.2 242/663] media: mediatek: vcodec: making sure queue_work successfully Date: Mon, 8 May 2023 11:41:08 +0200 Message-Id: <20230508094436.132932694@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094428.384831245@linuxfoundation.org> References: <20230508094428.384831245@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yunfei Dong [ Upstream commit 2e0ef56d81cb2569624d288b7e95a8a2734a7c74 ] Putting core work to work queue using queue_work maybe fail, call queue_work again when the count of core work in work queue is less than core_list_cnt, making sure all the buffer in core list can be scheduled. Fixes: 365e4ba01df4 ("media: mtk-vcodec: Add work queue for core hardware decode") Signed-off-by: Yunfei Dong Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- .../platform/mediatek/vcodec/vdec_msg_queue.c | 31 ++++++++++++++----- .../platform/mediatek/vcodec/vdec_msg_queue.h | 2 ++ 2 files changed, 25 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c index cdc539a46cb95..f3073d1e7f420 100644 --- a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c +++ b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.c @@ -71,6 +71,7 @@ static void vdec_msg_queue_dec(struct vdec_msg_queue *msg_queue, int hardware_in int vdec_msg_queue_qbuf(struct vdec_msg_queue_ctx *msg_ctx, struct vdec_lat_buf *buf) { struct list_head *head; + int status; head = vdec_get_buf_list(msg_ctx->hardware_index, buf); if (!head) { @@ -83,11 +84,17 @@ int vdec_msg_queue_qbuf(struct vdec_msg_queue_ctx *msg_ctx, struct vdec_lat_buf msg_ctx->ready_num++; vdec_msg_queue_inc(&buf->ctx->msg_queue, msg_ctx->hardware_index); - if (msg_ctx->hardware_index != MTK_VDEC_CORE) + if (msg_ctx->hardware_index != MTK_VDEC_CORE) { wake_up_all(&msg_ctx->ready_to_use); - else - queue_work(buf->ctx->dev->core_workqueue, - &buf->ctx->msg_queue.core_work); + } else { + if (buf->ctx->msg_queue.core_work_cnt < + atomic_read(&buf->ctx->msg_queue.core_list_cnt)) { + status = queue_work(buf->ctx->dev->core_workqueue, + &buf->ctx->msg_queue.core_work); + if (status) + buf->ctx->msg_queue.core_work_cnt++; + } + } mtk_v4l2_debug(3, "enqueue buf type: %d addr: 0x%p num: %d", msg_ctx->hardware_index, buf, msg_ctx->ready_num); @@ -254,6 +261,7 @@ static void vdec_msg_queue_core_work(struct work_struct *work) container_of(msg_queue, struct mtk_vcodec_ctx, msg_queue); struct mtk_vcodec_dev *dev = ctx->dev; struct vdec_lat_buf *lat_buf; + int status; lat_buf = vdec_msg_queue_dqbuf(&dev->msg_queue_core_ctx); if (!lat_buf) @@ -270,11 +278,17 @@ static void vdec_msg_queue_core_work(struct work_struct *work) vdec_msg_queue_qbuf(&ctx->msg_queue.lat_ctx, lat_buf); wake_up_all(&ctx->msg_queue.core_dec_done); - if (atomic_read(&lat_buf->ctx->msg_queue.core_list_cnt)) { - mtk_v4l2_debug(3, "re-schedule to decode for core: %d", - dev->msg_queue_core_ctx.ready_num); - queue_work(dev->core_workqueue, &msg_queue->core_work); + spin_lock(&dev->msg_queue_core_ctx.ready_lock); + lat_buf->ctx->msg_queue.core_work_cnt--; + + if (lat_buf->ctx->msg_queue.core_work_cnt < + atomic_read(&lat_buf->ctx->msg_queue.core_list_cnt)) { + status = queue_work(lat_buf->ctx->dev->core_workqueue, + &lat_buf->ctx->msg_queue.core_work); + if (status) + lat_buf->ctx->msg_queue.core_work_cnt++; } + spin_unlock(&dev->msg_queue_core_ctx.ready_lock); } int vdec_msg_queue_init(struct vdec_msg_queue *msg_queue, @@ -289,6 +303,7 @@ int vdec_msg_queue_init(struct vdec_msg_queue *msg_queue, return 0; msg_queue->ctx = ctx; + msg_queue->core_work_cnt = 0; vdec_msg_queue_init_ctx(&msg_queue->lat_ctx, MTK_VDEC_LAT0); INIT_WORK(&msg_queue->core_work, vdec_msg_queue_core_work); diff --git a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.h b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.h index a75c04418f52e..a5d44bc97c16b 100644 --- a/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.h +++ b/drivers/media/platform/mediatek/vcodec/vdec_msg_queue.h @@ -77,6 +77,7 @@ struct vdec_lat_buf { * @lat_list_cnt: used to record each instance lat list count * @core_list_cnt: used to record each instance core list count * @core_dec_done: core work queue decode done event + * @core_work_cnt: the number of core work in work queue */ struct vdec_msg_queue { struct vdec_lat_buf lat_buf[NUM_BUFFER_COUNT]; @@ -92,6 +93,7 @@ struct vdec_msg_queue { atomic_t lat_list_cnt; atomic_t core_list_cnt; wait_queue_head_t core_dec_done; + int core_work_cnt; }; /** -- 2.39.2