Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4201acd0 authored by Rahul Sharma's avatar Rahul Sharma Committed by Yong Ding
Browse files

soc: qcom: hab: add send/recv total msg count 



This stat can be used to determine if there is any
message lost between hab_vchan_send and hab_vchan_recv.

Change-Id: I37be3e0a1359315e213399b9f91b18158006cd3e
Signed-off-by: default avatarRahul Sharma <rahsha@codeaurora.org>
Signed-off-by: default avatarYong Ding <yongding@codeaurora.org>
parent e2ae22f9

drivers/soc/qcom/hab/hab.c

+18 −0
Original line number Diff line number Diff line
@@ -587,6 +587,13 @@ long hab_vchan_send(struct uhab_context *ctx, 


		schedule();

	}



	/*

	 * The ret here as 0 indicates the message was already sent out

	 * from the hab_vchan_send()'s perspective.

	 */

	if (!ret)

		vchan->tx_cnt++;

err:

	if (vchan)

		hab_vchan_put(vchan);
@@ -611,6 +618,8 @@ int hab_vchan_recv(struct uhab_context *ctx, 
		return -ENODEV;

	}



	vchan->rx_inflight = 1;



	if (nonblocking_flag) {

		/*

		 * Try to pull data from the ring in this context instead of
@@ -628,8 +637,17 @@ int hab_vchan_recv(struct uhab_context *ctx, 
			ret = -ENODEV;

		else if (ret == -ERESTARTSYS)

			ret = -EINTR;

	} else if (!ret) {

		/*

		 * 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

		 * non-zero.

		 */

		vchan->rx_cnt++;

	}



	vchan->rx_inflight = 0;



	hab_vchan_put(vchan);

	return ret;

}

drivers/soc/qcom/hab/hab.h

+5 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

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

 */

#ifndef __HAB_H

#define __HAB_H
@@ -341,6 +341,10 @@ struct virtual_channel { 
	 */

	int closed;

	int forked; /* if fork is detected and assume only once */

	/* stats */

	uint64_t tx_cnt; /* total succeeded tx */

	uint64_t rx_cnt; /* total succeeded rx */

	int rx_inflight; /* rx in progress/blocking */

};



/*

drivers/soc/qcom/hab/hab_stat.c

+6 −3
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.

 */

#include "hab.h"

#include "hab_grantable.h"
@@ -61,9 +61,12 @@ int hab_stat_show_vchan(struct hab_driver *driver, 
			read_lock(&pchan->vchans_lock);

			list_for_each_entry(vc, &pchan->vchannels, pnode) {

				ret = hab_stat_buffer_print(buf, size,

					"%08X(%d:%d) ", vc->id,

					"%08X(%d:%d:%lu:%lu:%d) ", vc->id,

					get_refcnt(vc->refcount),

					vc->otherend_closed);

					vc->otherend_closed,

					(unsigned long)vc->tx_cnt,

					(unsigned long)vc->rx_cnt,

					vc->rx_inflight);

			}

			ret = hab_stat_buffer_print(buf, size, "\n");

			read_unlock(&pchan->vchans_lock);