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Commit d371440a authored by Ravi Aravamudhan's avatar Ravi Aravamudhan Committed by Matt Wagantall
Browse files

diag: Add flow control counts to diag-socket layer 



If the peripherals are slow in reading diag data from socket
channels, the channel will be flow controlled. Add counters to
track how many times a peripheral has flow controlled Apps Diag
driver.

Change-Id: I6907cc618d50f7343efe964eeb07668cdb6e4249
Signed-off-by: default avatarRavi Aravamudhan <aravamud@codeaurora.org>
parent b8629d9a

drivers/char/diag/diag_debugfs.c

+2 −0
Original line number Diff line number Diff line
@@ -617,6 +617,7 @@ static ssize_t diag_dbgfs_read_socketinfo(struct file *file, char __user *ubuf, 
				"opened\t\t:\t%d\n"

				"buf_1 busy\t:\t%d\n"

				"buf_2 busy\t:\t%d\n"

				"flow ctrl count\t:\t%d\n"

				"data_ready\t:\t%d\n"

				"init pending\t:\t%d\n"

				"read pending\t:\t%d\n"
@@ -633,6 +634,7 @@ static ssize_t diag_dbgfs_read_socketinfo(struct file *file, char __user *ubuf, 
				atomic_read(&fwd_ctxt->buf_1->in_busy) : -1,

				(fwd_ctxt && fwd_ctxt->buf_2) ?

				atomic_read(&fwd_ctxt->buf_2->in_busy) : -1,

				atomic_read(&info->flow_cnt),

				info->data_ready,

				work_pending(&info->init_work),

				work_pending(&info->read_work),

drivers/char/diag/diagfwd_socket.c

+2 −0
Original line number Diff line number Diff line
@@ -232,6 +232,7 @@ static void socket_flow_cntl(struct sock *sk_ptr) 
		return;

	}



	atomic_inc(&info->flow_cnt);

	DIAG_LOG(DIAG_DEBUG_PERIPHERALS, "%s flow controlled\n", info->name);

	pr_debug("diag: In %s, channel %s flow controlled\n",

		 __func__, info->name);
@@ -625,6 +626,7 @@ static void __diag_socket_init(struct diag_socket_info *info) 
	info->hdl = NULL;

	info->fwd_ctxt = NULL;

	info->data_ready = 0;

	atomic_set(&info->flow_cnt, 0);

	spin_lock_init(&info->lock);

	strlcpy(wq_name, "DIAG_SOCKET_", 10);

	strlcat(wq_name, info->name, sizeof(info->name));

drivers/char/diag/diagfwd_socket.h

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ struct diag_socket_info { 
	uint32_t svc_id;

	uint32_t ins_id;

	uint32_t data_ready;

	atomic_t flow_cnt;

	char name[DIAG_SOCKET_NAME_SZ];

	spinlock_t lock;

	wait_queue_head_t wait_q;