From patchwork Fri Jul 17 03:39:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 11668921 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 77B13618 for ; Fri, 17 Jul 2020 03:43:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6701820672 for ; Fri, 17 Jul 2020 03:43:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726665AbgGQDnX (ORCPT ); Thu, 16 Jul 2020 23:43:23 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:52114 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726489AbgGQDnX (ORCPT ); Thu, 16 Jul 2020 23:43:23 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: ezequiel) with ESMTPSA id C88642A4FA6 From: Ezequiel Garcia To: linux-media@vger.kernel.org Cc: Hans Verkuil , Ezequiel Garcia , kernel@collabora.com, Nicolas Dufresne Subject: [PATCH v4] media: videobuf2: Print videobuf2 buffer state by name Date: Fri, 17 Jul 2020 00:39:57 -0300 Message-Id: <20200717033957.218056-1-ezequiel@collabora.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200710130010.160712-1-ezequiel@collabora.com> References: <20200710130010.160712-1-ezequiel@collabora.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org For debugging purposes, seeing the state integer representation is really inconvenient. Improve this and be developer-friendly by printing the state name instead. Suggested-by: Nicolas Dufresne Signed-off-by: Ezequiel Garcia --- v4: * Drop inline modifier. * Add back static modifier from the now local name array. v3: * Drop static modifier from the now local name array. v2: * Use a proper function instead of a C macro. .../media/common/videobuf2/videobuf2-core.c | 35 ++++++++++++++----- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index abaf28e057eb..f544d3393e9d 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -191,6 +191,23 @@ module_param(debug, int, 0644); static void __vb2_queue_cancel(struct vb2_queue *q); static void __enqueue_in_driver(struct vb2_buffer *vb); +static const char *vb2_state_name(enum vb2_buffer_state s) +{ + static const char * const state_names[] = { + [VB2_BUF_STATE_DEQUEUED] = "dequeued", + [VB2_BUF_STATE_IN_REQUEST] = "in request", + [VB2_BUF_STATE_PREPARING] = "preparing", + [VB2_BUF_STATE_QUEUED] = "queued", + [VB2_BUF_STATE_ACTIVE] = "active", + [VB2_BUF_STATE_DONE] = "done", + [VB2_BUF_STATE_ERROR] = "error", + }; + + if ((unsigned int)(s) < ARRAY_SIZE(state_names)) + return state_names[s]; + return "unknown"; +} + /* * __vb2_buf_mem_alloc() - allocate video memory for the given buffer */ @@ -1015,8 +1032,8 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) */ vb->cnt_buf_done++; #endif - dprintk(q, 4, "done processing on buffer %d, state: %d\n", - vb->index, state); + dprintk(q, 4, "done processing on buffer %d, state: %s\n", + vb->index, vb2_state_name(state)); if (state != VB2_BUF_STATE_QUEUED) __vb2_buf_mem_finish(vb); @@ -1490,8 +1507,8 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb) vb = q->bufs[index]; if (vb->state != VB2_BUF_STATE_DEQUEUED) { - dprintk(q, 1, "invalid buffer state %d\n", - vb->state); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } if (vb->prepared) { @@ -1670,7 +1687,8 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb, dprintk(q, 1, "buffer still being prepared\n"); return -EINVAL; default: - dprintk(q, 1, "invalid buffer state %d\n", vb->state); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } @@ -1884,7 +1902,8 @@ int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb, dprintk(q, 3, "returning done buffer with errors\n"); break; default: - dprintk(q, 1, "invalid buffer state\n"); + dprintk(q, 1, "invalid buffer state %s\n", + vb2_state_name(vb->state)); return -EINVAL; } @@ -1915,8 +1934,8 @@ int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb, media_request_put(vb->request); vb->request = NULL; - dprintk(q, 2, "dqbuf of buffer %d, with state %d\n", - vb->index, vb->state); + dprintk(q, 2, "dqbuf of buffer %d, state: %s\n", + vb->index, vb2_state_name(vb->state)); return 0;