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Commit 49a88c6f authored by AnilKumar Chimata's avatar AnilKumar Chimata Committed by Anmolpreet Kaur
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SMCInvoke: Process requests for active clients 



Wake up request pool only when there are active
clients.

Change-Id: Ie884532c4b0459259bdf5b6cf2be456bb4c855c5
Signed-off-by: default avatarAnilKumar Chimata <anilc@codeaurora.org>
parent 04ac388e

drivers/soc/qcom/smcinvoke.c

+11 −12
Original line number Diff line number Diff line
@@ -959,10 +959,12 @@ static void process_tzcb_req(void *buf, size_t buf_len, struct file **arr_filp) 
	 * we need not worry that server_info will be deleted because as long

	 * as this CBObj is served by this server, srvr_info will be valid.

	 */

	wake_up_interruptible(&srvr_info->req_wait_q);

	if (wq_has_sleeper(&srvr_info->req_wait_q)) {

		wake_up_interruptible_all(&srvr_info->req_wait_q);

		ret = wait_event_interruptible(srvr_info->rsp_wait_q,

			(cb_txn->state == SMCINVOKE_REQ_PROCESSED) ||

			(srvr_info->state == SMCINVOKE_SERVER_STATE_DEFUNCT));

	}

out:

	/*

	 * we could be here because of either: a. Req is PROCESSED
@@ -1497,7 +1499,6 @@ static long process_accept_req(struct file *filp, unsigned int cmd, 
						unsigned long arg)

{

	int ret = -1;

	sigset_t pending_sig;

	struct smcinvoke_file_data *server_obj = filp->private_data;

	struct smcinvoke_accept user_args = {0};

	struct smcinvoke_cb_txn *cb_txn = NULL;
@@ -1523,6 +1524,9 @@ static long process_accept_req(struct file *filp, unsigned int cmd, 
	if (!server_info)

		return -EINVAL;



	if (server_info->state == SMCINVOKE_SERVER_STATE_DEFUNCT)

		server_info->state = 0;



	/* First check if it has response otherwise wait for req */

	if (user_args.has_resp) {

		mutex_lock(&g_smcinvoke_lock);
@@ -1576,17 +1580,12 @@ static long process_accept_req(struct file *filp, unsigned int cmd, 
			 * server_info invalid. Other accept/invoke threads are

			 * using server_info and would crash. So dont do that.

			 */

			pending_sig = (&current->pending)->signal;

			if (sigismember(&pending_sig, SIGKILL)) {

			mutex_lock(&g_smcinvoke_lock);

				server_info->state =

					SMCINVOKE_SERVER_STATE_DEFUNCT;

				wake_up_interruptible(&server_info->rsp_wait_q);

			server_info->state = SMCINVOKE_SERVER_STATE_DEFUNCT;

			mutex_unlock(&g_smcinvoke_lock);

			}

			wake_up_interruptible(&server_info->rsp_wait_q);

			goto out;

		}



		mutex_lock(&g_smcinvoke_lock);

		cb_txn = find_cbtxn_locked(server_info,

						SMCINVOKE_NEXT_AVAILABLE_TXN,