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staging: lustre: lnet: Replace semaphore ln_rc_signal with completion

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The semaphore ln_rc_signal is used as completion, so convert it to
struct completion.  Semaphores are going away in the future.

Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Binoy Jayan 2016-06-08 13:20:42 +05:30 committed by Greg Kroah-Hartman
parent 67b1a24e88
commit 21ca52bb74
2 changed files with 7 additions and 5 deletions
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3
drivers/staging/lustre/include/linux/lnet/lib-types.h
View File

@ -38,6 +38,7 @@
#include <linux/kthread.h>
#include <linux/uio.h>
#include <linux/types.h>
#include <linux/completion.h>
#include "types.h"
#include "lnetctl.h"
@ -610,7 +611,7 @@ typedef struct {
/* rcd ready for free */
struct list_head ln_rcd_zombie;
/* serialise startup/shutdown */
struct semaphore ln_rc_signal;
struct completion ln_rc_signal;
struct mutex ln_api_mutex;
struct mutex ln_lnd_mutex;

9
drivers/staging/lustre/lnet/lnet/router.c
View File

@ -18,6 +18,7 @@
*/
#define DEBUG_SUBSYSTEM S_LNET
#include <linux/completion.h>
#include "../../include/linux/lnet/lib-lnet.h"
#define LNET_NRB_TINY_MIN 512 /* min value for each CPT */
@ -1065,7 +1066,7 @@ lnet_router_checker_start(void)
return -EINVAL;
}
sema_init(&the_lnet.ln_rc_signal, 0);
init_completion(&the_lnet.ln_rc_signal);
rc = LNetEQAlloc(0, lnet_router_checker_event, &the_lnet.ln_rc_eqh);
if (rc) {
@ -1079,7 +1080,7 @@ lnet_router_checker_start(void)
rc = PTR_ERR(task);
CERROR("Can't start router checker thread: %d\n", rc);
/* block until event callback signals exit */
down(&the_lnet.ln_rc_signal);
wait_for_completion(&the_lnet.ln_rc_signal);
rc = LNetEQFree(the_lnet.ln_rc_eqh);
LASSERT(!rc);
the_lnet.ln_rc_state = LNET_RC_STATE_SHUTDOWN;
@ -1112,7 +1113,7 @@ lnet_router_checker_stop(void)
wake_up(&the_lnet.ln_rc_waitq);
/* block until event callback signals exit */
down(&the_lnet.ln_rc_signal);
wait_for_completion(&the_lnet.ln_rc_signal);
LASSERT(the_lnet.ln_rc_state == LNET_RC_STATE_SHUTDOWN);
rc = LNetEQFree(the_lnet.ln_rc_eqh);
@ -1295,7 +1296,7 @@ lnet_router_checker(void *arg)
lnet_prune_rc_data(1); /* wait for UNLINK */
the_lnet.ln_rc_state = LNET_RC_STATE_SHUTDOWN;
up(&the_lnet.ln_rc_signal);
complete(&the_lnet.ln_rc_signal);
/* The unlink event callback will signal final completion */
return 0;
}