Commit 1020e1ef authored by Karsten Graul's avatar Karsten Graul Committed by David S. Miller
Browse files

net/smc: move testlink work to system work queue 



The testlink work waits for a response to the testlink request and
blocks the single threaded llc_wq. This type of work does not have to be
serialized and can be moved to the system work queue.

Signed-off-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
Reviewed-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d854fcbf

net/smc/smc_llc.c

+6 −5
Original line number Diff line number Diff line
@@ -613,14 +613,15 @@ static void smc_llc_testlink_work(struct work_struct *work) 
	/* receive TEST LINK response over RoCE fabric */

	rc = wait_for_completion_interruptible_timeout(&link->llc_testlink_resp,

						       SMC_LLC_WAIT_TIME);

	if (link->state != SMC_LNK_ACTIVE)

		return;		/* link state changed */

	if (rc <= 0) {

		smc_lgr_terminate_sched(smc_get_lgr(link));

		return;

	}

	next_interval = link->llc_testlink_time;

out:

	queue_delayed_work(link->llc_wq, &link->llc_testlink_wrk,

			   next_interval);

	schedule_delayed_work(&link->llc_testlink_wrk, next_interval);

}



int smc_llc_link_init(struct smc_link *link)
@@ -648,7 +649,7 @@ void smc_llc_link_active(struct smc_link *link, int testlink_time) 
	link->state = SMC_LNK_ACTIVE;

	if (testlink_time) {

		link->llc_testlink_time = testlink_time * HZ;

		queue_delayed_work(link->llc_wq, &link->llc_testlink_wrk,

		schedule_delayed_work(&link->llc_testlink_wrk,

				      link->llc_testlink_time);

	}

}
@@ -665,7 +666,7 @@ void smc_llc_link_inactive(struct smc_link *link) 
	if (link->state == SMC_LNK_INACTIVE)

		return;

	link->state = SMC_LNK_INACTIVE;

	cancel_delayed_work(&link->llc_testlink_wrk);

	cancel_delayed_work_sync(&link->llc_testlink_wrk);

	smc_wr_wakeup_reg_wait(link);

	smc_wr_wakeup_tx_wait(link);

}

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