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HID: Trace events for external sensor driver

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

Change-Id: Iba00ef71010a6a07809a23f631afba557c5dd822
Signed-off-by: Rohit Bandi <rohitbandi@codeaurora.org>
This commit is contained in:
rbandi 2018-10-18 11:31:32 -07:00
commit 32f19a6cd2
4 changed files with 78 additions and 1 deletions
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2
drivers/hid/Makefile
View file

@ -78,7 +78,7 @@ hid-picolcd-$(CONFIG_DEBUG_FS) += hid-picolcd_debugfs.o
obj-$(CONFIG_HID_PLANTRONICS) += hid-plantronics.o
obj-$(CONFIG_HID_PRIMAX) += hid-primax.o
obj-$(CONFIG_HID_QVR) += hid-qvr.o
obj-$(CONFIG_HID_QVR) += hid-qvr.o hid-trace.o
obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \
hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \
hid-roccat-koneplus.o hid-roccat-konepure.o hid-roccat-kovaplus.o \

4
drivers/hid/hid-qvr.c
View file

@ -36,6 +36,7 @@
#include "../soc/qcom/smp2p_private.h"
#include "hid-ids.h"
#include "hid-qvr.h"
#include "hid-trace.h"
static struct ion_handle *handle;
static struct ion_client *client;
@ -142,6 +143,9 @@ 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);
pr_debug("%s: gts= %llu, gx= %d, gy=%d, gz=%d", __func__,
data->gts, data->gx, data->gy, data->gz);
pr_debug("%s: ats= %llu, ax= %d, ay=%d, az=%d", __func__,

17
drivers/hid/hid-trace.c Normal file
View file

@ -0,0 +1,17 @@
/* Copyright (c) 2018, 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"

56
drivers/hid/hid-trace.h Normal file
View file

@ -0,0 +1,56 @@
/* Copyright (c) 2018, 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>