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Commit 55d6c3af authored by rbandi's avatar rbandi
Browse files

HID: Trace events for external sensor driver 



These trace events are used to profile performance
of VR use cases.

Change-Id: Iba00ef71010a6a07809a23f631afba557c5dd822
Signed-off-by: default avatarrbandi <rohitbandi@codeaurora.org>
parent 3d43fd37

drivers/hid/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -139,4 +139,4 @@ obj-$(CONFIG_I2C_HID) += i2c-hid/ 
obj-$(CONFIG_INTEL_ISH_HID)	+= intel-ish-hid/

obj-$(INTEL_ISH_FIRMWARE_DOWNLOADER)	+= intel-ish-hid/



obj-$(CONFIG_HID_QVR)		+= hid-qvr.o
 
obj-$(CONFIG_HID_QVR)		+= hid-qvr.o hid-trace.o

drivers/hid/hid-qvr.c

+4 −0
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ 
#include <linux/soc/qcom/smem_state.h>

#include "hid-ids.h"

#include "hid-qvr.h"

#include "hid-trace.h"



static struct dma_buf *qvr_buf;

static void *vaddr;
@@ -124,6 +125,9 @@ int qvr_send_package_wrap(u8 *message, int msize, struct hid_device *hid) 
	data->my = imuData.my0;

	data->mz = -imuData.mz0;



	trace_qvr_recv_sensor("gyro", data->gts, data->gx, data->gy, data->gz);

	trace_qvr_recv_sensor("accel", data->ats, data->ax, data->ay, data->az);



	index_buf->most_recent_index = buf_index;

	buf_index = (buf_index == (8 - 1)) ? 0 : buf_index + 1;

	return 0;

drivers/hid/hid-trace.c

0 → 100644
+19 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2020, 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

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */





/* Instantiate tracepoints */

#define CREATE_TRACE_POINTS

#include "hid-trace.h"

drivers/hid/hid-trace.h

0 → 100644
+58 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2018-2020, 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

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */



#if !defined(_HID_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)

#define _HID_TRACE_H



#undef TRACE_SYSTEM

#define TRACE_SYSTEM hid

#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH .

#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_FILE hid-trace



#include <linux/tracepoint.h>



TRACE_EVENT(qvr_recv_sensor,

	TP_PROTO(char *sensor, uint64_t ts, s32 x, s32 y, s32 z),

	TP_ARGS(sensor, ts, x, y, z),

	TP_STRUCT__entry(

		__field(char *, sensor)

		__field(uint64_t, ts)

		__field(int, x)

		__field(int, y)

		__field(int, z)

		),

	TP_fast_assign(

		__entry->sensor = sensor;

		__entry->ts = ts;

		__entry->x = x;

		__entry->y = y;

		__entry->z = z;

		),

	TP_printk(

		"%s - ts=%llu x=%d y=%d z=%d",

		__entry->sensor,

		__entry->ts,

		__entry->x,

		__entry->y,

		__entry->z

		)

	);



#endif /* _HID_TRACE_H */



/* This part must be outside protection */

#include <trace/define_trace.h>