Commit f254ba6a authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Jason Gunthorpe
Browse files

cxgb4: Convert hwtid_idr to XArray 



Signed-off-by: default avatarMatthew Wilcox <willy@infradead.org>
Acked-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 7a268a93

drivers/infiniband/hw/cxgb4/cm.c

+15 −12
Original line number Diff line number Diff line
@@ -331,20 +331,23 @@ static void remove_ep_tid(struct c4iw_ep *ep) 
{

	unsigned long flags;



	spin_lock_irqsave(&ep->com.dev->lock, flags);

	_remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0);

	if (idr_is_empty(&ep->com.dev->hwtid_idr))

	xa_lock_irqsave(&ep->com.dev->hwtids, flags);

	__xa_erase(&ep->com.dev->hwtids, ep->hwtid);

	if (xa_empty(&ep->com.dev->hwtids))

		wake_up(&ep->com.dev->wait);

	spin_unlock_irqrestore(&ep->com.dev->lock, flags);

	xa_unlock_irqrestore(&ep->com.dev->hwtids, flags);

}



static void insert_ep_tid(struct c4iw_ep *ep)

static int insert_ep_tid(struct c4iw_ep *ep)

{

	unsigned long flags;

	int err;



	xa_lock_irqsave(&ep->com.dev->hwtids, flags);

	err = __xa_insert(&ep->com.dev->hwtids, ep->hwtid, ep, GFP_KERNEL);

	xa_unlock_irqrestore(&ep->com.dev->hwtids, flags);



	spin_lock_irqsave(&ep->com.dev->lock, flags);

	_insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0);

	spin_unlock_irqrestore(&ep->com.dev->lock, flags);

	return err;

}



/*
@@ -355,11 +358,11 @@ static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid) 
	struct c4iw_ep *ep;

	unsigned long flags;



	spin_lock_irqsave(&dev->lock, flags);

	ep = idr_find(&dev->hwtid_idr, tid);

	xa_lock_irqsave(&dev->hwtids, flags);

	ep = xa_load(&dev->hwtids, tid);

	if (ep)

		c4iw_get_ep(&ep->com);

	spin_unlock_irqrestore(&dev->lock, flags);

	xa_unlock_irqrestore(&dev->hwtids, flags);

	return ep;

}
@@ -2947,7 +2950,7 @@ out: 
					(const u32 *)&sin6->sin6_addr.s6_addr,

					1);

		}

		remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);

		xa_erase_irq(&ep->com.dev->hwtids, ep->hwtid);

		cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid,

				 ep->com.local_addr.ss_family);

		dst_release(ep->dst);

drivers/infiniband/hw/cxgb4/device.c

+17 −9
Original line number Diff line number Diff line
@@ -560,10 +560,8 @@ static const struct file_operations stats_debugfs_fops = { 
	.write   = stats_clear,

};



static int dump_ep(int id, void *p, void *data)

static int dump_ep(struct c4iw_ep *ep, struct c4iw_debugfs_data *epd)

{

	struct c4iw_ep *ep = p;

	struct c4iw_debugfs_data *epd = data;

	int space;

	int cc;
@@ -619,6 +617,11 @@ static int dump_ep(int id, void *p, void *data) 
	return 0;

}



static int _dump_ep(int id, void *p, void *data)

{

	return dump_ep(p, data);

}



static int dump_listen_ep(int id, void *p, void *data)

{

	struct c4iw_listen_ep *ep = p;
@@ -676,6 +679,8 @@ static int ep_release(struct inode *inode, struct file *file) 


static int ep_open(struct inode *inode, struct file *file)

{

	struct c4iw_ep *ep;

	unsigned long index;

	struct c4iw_debugfs_data *epd;

	int ret = 0;

	int count = 1;
@@ -688,8 +693,9 @@ static int ep_open(struct inode *inode, struct file *file) 
	epd->devp = inode->i_private;

	epd->pos = 0;



	xa_for_each(&epd->devp->hwtids, index, ep)

		count++;

	spin_lock_irq(&epd->devp->lock);

	idr_for_each(&epd->devp->hwtid_idr, count_idrs, &count);

	idr_for_each(&epd->devp->atid_idr, count_idrs, &count);

	idr_for_each(&epd->devp->stid_idr, count_idrs, &count);

	spin_unlock_irq(&epd->devp->lock);
@@ -701,9 +707,12 @@ static int ep_open(struct inode *inode, struct file *file) 
		goto err1;

	}



	xa_lock_irq(&epd->devp->hwtids);

	xa_for_each(&epd->devp->hwtids, index, ep)

		dump_ep(ep, epd);

	xa_unlock_irq(&epd->devp->hwtids);

	spin_lock_irq(&epd->devp->lock);

	idr_for_each(&epd->devp->hwtid_idr, dump_ep, epd);

	idr_for_each(&epd->devp->atid_idr, dump_ep, epd);

	idr_for_each(&epd->devp->atid_idr, _dump_ep, epd);

	idr_for_each(&epd->devp->stid_idr, dump_listen_ep, epd);

	spin_unlock_irq(&epd->devp->lock);
@@ -936,8 +945,7 @@ void c4iw_dealloc(struct uld_ctx *ctx) 
	WARN_ON(!xa_empty(&ctx->dev->cqs));

	WARN_ON(!xa_empty(&ctx->dev->qps));

	WARN_ON(!xa_empty(&ctx->dev->mrs));

	wait_event(ctx->dev->wait, idr_is_empty(&ctx->dev->hwtid_idr));

	idr_destroy(&ctx->dev->hwtid_idr);

	wait_event(ctx->dev->wait, xa_empty(&ctx->dev->hwtids));

	idr_destroy(&ctx->dev->stid_idr);

	idr_destroy(&ctx->dev->atid_idr);

	if (ctx->dev->rdev.bar2_kva)
@@ -1046,7 +1054,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop) 
	xa_init_flags(&devp->cqs, XA_FLAGS_LOCK_IRQ);

	xa_init_flags(&devp->qps, XA_FLAGS_LOCK_IRQ);

	xa_init_flags(&devp->mrs, XA_FLAGS_LOCK_IRQ);

	idr_init(&devp->hwtid_idr);

	xa_init_flags(&devp->hwtids, XA_FLAGS_LOCK_IRQ);

	idr_init(&devp->stid_idr);

	idr_init(&devp->atid_idr);

	spin_lock_init(&devp->lock);

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

+1 −1
Original line number Diff line number Diff line
@@ -322,7 +322,7 @@ struct c4iw_dev { 
	struct mutex db_mutex;

	struct dentry *debugfs_root;

	enum db_state db_state;

	struct idr hwtid_idr;

	struct xarray hwtids;

	struct idr atid_idr;

	struct idr stid_idr;

	struct list_head db_fc_list;

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