From c1e13f25674ed564948ecb7dfe5f83e578892896 Mon Sep 17 00:00:00 2001 From: Stefani Seibold Date: Mon, 21 Dec 2009 14:37:27 -0800 Subject: kfifo: move out spinlock Move the pointer to the spinlock out of struct kfifo. Most users in tree do not actually use a spinlock, so the few exceptions now have to call kfifo_{get,put}_locked, which takes an extra argument to a spinlock. Signed-off-by: Stefani Seibold Acked-by: Greg Kroah-Hartman Acked-by: Mauro Carvalho Chehab Acked-by: Andi Kleen Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/hw/cxgb3/cxio_resource.c | 36 ++++++++++++++++------------- 1 file changed, 20 insertions(+), 16 deletions(-) (limited to 'drivers/infiniband') diff --git a/drivers/infiniband/hw/cxgb3/cxio_resource.c b/drivers/infiniband/hw/cxgb3/cxio_resource.c index 65072bd..98f24e6 100644 --- a/drivers/infiniband/hw/cxgb3/cxio_resource.c +++ b/drivers/infiniband/hw/cxgb3/cxio_resource.c @@ -55,7 +55,7 @@ static int __cxio_init_resource_fifo(struct kfifo *fifo, u32 rarray[16]; spin_lock_init(fifo_lock); - if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL, fifo_lock)) + if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL)) return -ENOMEM; for (i = 0; i < skip_low + skip_high; i++) @@ -86,7 +86,8 @@ static int __cxio_init_resource_fifo(struct kfifo *fifo, __kfifo_put(fifo, (unsigned char *) &i, sizeof(u32)); for (i = 0; i < skip_low + skip_high; i++) - kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32)); + kfifo_get_locked(fifo, (unsigned char *) &entry, + sizeof(u32), fifo_lock); return 0; } @@ -113,8 +114,7 @@ static int cxio_init_qpid_fifo(struct cxio_rdev *rdev_p) spin_lock_init(&rdev_p->rscp->qpid_fifo_lock); if (kfifo_alloc(&rdev_p->rscp->qpid_fifo, T3_MAX_NUM_QP * sizeof(u32), - GFP_KERNEL, - &rdev_p->rscp->qpid_fifo_lock)) + GFP_KERNEL)) return -ENOMEM; for (i = 16; i < T3_MAX_NUM_QP; i++) @@ -177,33 +177,37 @@ tpt_err: /* * returns 0 if no resource available */ -static u32 cxio_hal_get_resource(struct kfifo *fifo) +static u32 cxio_hal_get_resource(struct kfifo *fifo, spinlock_t * lock) { u32 entry; - if (kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32))) + if (kfifo_get_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock)) return entry; else return 0; /* fifo emptry */ } -static void cxio_hal_put_resource(struct kfifo *fifo, u32 entry) +static void cxio_hal_put_resource(struct kfifo *fifo, spinlock_t * lock, + u32 entry) { - BUG_ON(kfifo_put(fifo, (unsigned char *) &entry, sizeof(u32)) == 0); + BUG_ON( + kfifo_put_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock) + == 0); } u32 cxio_hal_get_stag(struct cxio_hal_resource *rscp) { - return cxio_hal_get_resource(&rscp->tpt_fifo); + return cxio_hal_get_resource(&rscp->tpt_fifo, &rscp->tpt_fifo_lock); } void cxio_hal_put_stag(struct cxio_hal_resource *rscp, u32 stag) { - cxio_hal_put_resource(&rscp->tpt_fifo, stag); + cxio_hal_put_resource(&rscp->tpt_fifo, &rscp->tpt_fifo_lock, stag); } u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp) { - u32 qpid = cxio_hal_get_resource(&rscp->qpid_fifo); + u32 qpid = cxio_hal_get_resource(&rscp->qpid_fifo, + &rscp->qpid_fifo_lock); PDBG("%s qpid 0x%x\n", __func__, qpid); return qpid; } @@ -211,27 +215,27 @@ u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp) void cxio_hal_put_qpid(struct cxio_hal_resource *rscp, u32 qpid) { PDBG("%s qpid 0x%x\n", __func__, qpid); - cxio_hal_put_resource(&rscp->qpid_fifo, qpid); + cxio_hal_put_resource(&rscp->qpid_fifo, &rscp->qpid_fifo_lock, qpid); } u32 cxio_hal_get_cqid(struct cxio_hal_resource *rscp) { - return cxio_hal_get_resource(&rscp->cqid_fifo); + return cxio_hal_get_resource(&rscp->cqid_fifo, &rscp->cqid_fifo_lock); } void cxio_hal_put_cqid(struct cxio_hal_resource *rscp, u32 cqid) { - cxio_hal_put_resource(&rscp->cqid_fifo, cqid); + cxio_hal_put_resource(&rscp->cqid_fifo, &rscp->cqid_fifo_lock, cqid); } u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp) { - return cxio_hal_get_resource(&rscp->pdid_fifo); + return cxio_hal_get_resource(&rscp->pdid_fifo, &rscp->pdid_fifo_lock); } void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid) { - cxio_hal_put_resource(&rscp->pdid_fifo, pdid); + cxio_hal_put_resource(&rscp->pdid_fifo, &rscp->pdid_fifo_lock, pdid); } void cxio_hal_destroy_resource(struct cxio_hal_resource *rscp) -- cgit v1.1