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Commit eafdae80 authored by Yong Ding's avatar Yong Ding
Browse files

soc: qcom: hab: add HAB runtime profiling support 



Add trace points with TRACE_EVENT() inside the HAB
message send and receive paths. These tracing events
could be switched on and off w/ the standard ways.
When they are on, the tracing events could include the
MPM physical timer's counter values(useful for performance
profiling) if the timer is available.

Change-Id: Ide02263f85a61c88bf1aa8f464512756ae17d7a9
Signed-off-by: default avatarYong Ding <yongding@codeaurora.org>
parent a1a010ce

drivers/soc/qcom/hab/Makefile

+2 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only

CFLAGS_hab.o := -I$(src)



msm_hab-objs = \

	hab.o \

	hab_msg.o \

drivers/soc/qcom/hab/hab.c

+13 −0
Original line number Diff line number Diff line
@@ -4,6 +4,9 @@ 
 */

#include "hab.h"



#define CREATE_TRACE_POINTS

#include "hab_trace_os.h"



#define HAB_DEVICE_CNSTR(__name__, __id__, __num__) { \

	.name = __name__,\

	.id = __id__,\
@@ -555,6 +558,9 @@ long hab_vchan_send(struct uhab_context *ctx, 
		goto err;

	}



	/* log msg send timestamp: enter hab_vchan_send */

	trace_hab_vchan_send_start(vchan);



	HAB_HEADER_SET_SIZE(header, sizebytes);

	if (flags & HABMM_SOCKET_SEND_FLAGS_XING_VM_STAT) {

		HAB_HEADER_SET_TYPE(header, HAB_PAYLOAD_TYPE_PROFILE);
@@ -595,6 +601,10 @@ long hab_vchan_send(struct uhab_context *ctx, 
	if (!ret)

		vchan->tx_cnt++;

err:



	/* log msg send timestamp: exit hab_vchan_send */

	trace_hab_vchan_send_done(vchan);



	if (vchan)

		hab_vchan_put(vchan);
@@ -638,6 +648,9 @@ int hab_vchan_recv(struct uhab_context *ctx, 
		else if (ret == -ERESTARTSYS)

			ret = -EINTR;

	} else if (!ret) {

		/* log msg recv timestamp: exit hab_vchan_recv */

		trace_hab_vchan_recv_done(vchan, *message);



		/*

		 * Here, it is for sure that a message was received from the

		 * hab_vchan_recv()'s view w/ the ret as 0 and *message as

drivers/soc/qcom/hab/hab.h

+1 −0
Original line number Diff line number Diff line
@@ -224,6 +224,7 @@ struct hab_export_ack_recvd { 
struct hab_message {

	struct list_head node;

	size_t sizebytes;

	uint32_t sequence_rx;

	uint32_t data[];

};

drivers/soc/qcom/hab/hab_msg.c

+3 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.

 */

#include "hab.h"
@@ -34,6 +34,8 @@ hab_msg_alloc(struct physical_channel *pchan, size_t sizebytes) 
	message->sizebytes =

		physical_channel_read(pchan, message->data, sizebytes);



	message->sequence_rx = pchan->sequence_rx;



	return message;

}

drivers/soc/qcom/hab/hab_os.h

+2 −2
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2019-2021, The Linux Foundation. All rights reserved.

 */

#ifndef __HAB_OS_H

#define __HAB_OS_H
@@ -41,7 +41,7 @@ 
#include <linux/version.h>

#include <linux/devcoredump.h>



#ifdef CONFIG_MSM_BOOT_STATS

#if IS_ENABLED(CONFIG_MSM_BOOT_TIME_MARKER)

#include <soc/qcom/boot_stats.h>

#else

static inline unsigned long long msm_timer_get_sclk_ticks(void)