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Commit a2efefe1 authored by Deva Ramasubramanian's avatar Deva Ramasubramanian
Browse files

msm: wfd: Modify enc_avg_latency to only measure the encode latency 



Previously enc_avg_latency measured the time Video code took took to
encode a frame and the latency of the userspace client in picking up the
buffer.  Change the meaning just to measure encoder busy time.

CRs-Fixed: 647538
Change-Id: Ib7c30e51a267a0a2926096f13a933cdc94656453
Signed-off-by: default avatarDeva Ramasubramanian <dramasub@codeaurora.org>
parent 718daa02

drivers/media/platform/msm/wfd/wfd-util.c

+26 −23
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -135,31 +135,10 @@ int wfd_stats_update(struct wfd_stats *stats, enum wfd_stats_event event) 
	case WFD_STAT_EVENT_CLIENT_QUEUE:

		stats->v4l2_buf_count++;

		break;

	case WFD_STAT_EVENT_CLIENT_DEQUEUE: {

		struct wfd_stats_encode_sample *sample = NULL;



	case WFD_STAT_EVENT_CLIENT_DEQUEUE:

		stats->v4l2_buf_count--;



		if (!list_empty(&stats->enc_queue))

			sample = list_first_entry(&stats->enc_queue,

					struct wfd_stats_encode_sample,

					list);

		if (sample) {

			ktime_t kdiff = ktime_sub(ktime_get(),

						sample->encode_start_ts);

			uint32_t diff = ktime_to_ms(kdiff);



			stats->enc_cumulative_latency += diff;

			stats->enc_latency_samples++;

			stats->enc_avg_latency = stats->enc_cumulative_latency /

				stats->enc_latency_samples;



			list_del(&sample->list);

			kfree(sample);

			sample = NULL;

		}

		break;

	}

	case WFD_STAT_EVENT_MDP_QUEUE:

		stats->mdp_buf_count++;

		break;
@@ -184,8 +163,32 @@ int wfd_stats_update(struct wfd_stats *stats, enum wfd_stats_event event) 
		break;

	}

	case WFD_STAT_EVENT_ENC_DEQUEUE:

	{

		struct wfd_stats_encode_sample *sample = NULL;



		stats->enc_buf_count--;



		if (!list_empty(&stats->enc_queue))

			sample = list_first_entry(&stats->enc_queue,

					struct wfd_stats_encode_sample,

					list);



		if (sample) {

			ktime_t kdiff = ktime_sub(ktime_get(),

						sample->encode_start_ts);

			uint32_t diff = ktime_to_ms(kdiff);



			stats->enc_cumulative_latency += diff;

			stats->enc_latency_samples++;

			stats->enc_avg_latency = stats->enc_cumulative_latency /

				stats->enc_latency_samples;



			list_del(&sample->list);

			kfree(sample);

			sample = NULL;

		}

		break;

	}

	case WFD_STAT_EVENT_VSG_QUEUE:

		stats->vsg_buf_count++;

		break;