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cma: Convert portspace IDRs to XArray 

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Matthew Wilcox 2019-02-20 16:21:06 -08:00 committed by Jason Gunthorpe
parent 81cc440883
commit 638267537a
1 changed files with 21 additions and 20 deletions
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41
drivers/infiniband/core/cma.c
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@ -39,7 +39,7 @@
#include <linux/mutex.h>
#include <linux/random.h>
#include <linux/igmp.h>
#include <linux/idr.h>
#include <linux/xarray.h>
#include <linux/inetdevice.h>
#include <linux/slab.h>
#include <linux/module.h>
@ -191,10 +191,10 @@ static struct workqueue_struct *cma_wq;
static unsigned int cma_pernet_id;
struct cma_pernet {
struct idr tcp_ps;
struct idr udp_ps;
struct idr ipoib_ps;
struct idr ib_ps;
struct xarray tcp_ps;
struct xarray udp_ps;
struct xarray ipoib_ps;
struct xarray ib_ps;
};
static struct cma_pernet *cma_pernet(struct net *net)
@ -202,7 +202,8 @@ static struct cma_pernet *cma_pernet(struct net *net)
return net_generic(net, cma_pernet_id);
}
static struct idr *cma_pernet_idr(struct net *net, enum rdma_ucm_port_space ps)
static
struct xarray *cma_pernet_xa(struct net *net, enum rdma_ucm_port_space ps)
{
struct cma_pernet *pernet = cma_pernet(net);
@ -247,25 +248,25 @@ struct class_port_info_context {
static int cma_ps_alloc(struct net *net, enum rdma_ucm_port_space ps,
struct rdma_bind_list *bind_list, int snum)
{
struct idr *idr = cma_pernet_idr(net, ps);
struct xarray *xa = cma_pernet_xa(net, ps);
return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL);
return xa_insert(xa, snum, bind_list, GFP_KERNEL);
}
static struct rdma_bind_list *cma_ps_find(struct net *net,
enum rdma_ucm_port_space ps, int snum)
{
struct idr *idr = cma_pernet_idr(net, ps);
struct xarray *xa = cma_pernet_xa(net, ps);
return idr_find(idr, snum);
return xa_load(xa, snum);
}
static void cma_ps_remove(struct net *net, enum rdma_ucm_port_space ps,
int snum)
{
struct idr *idr = cma_pernet_idr(net, ps);
struct xarray *xa = cma_pernet_xa(net, ps);
idr_remove(idr, snum);
xa_erase(xa, snum);
}
enum {
@ -4655,10 +4656,10 @@ static int cma_init_net(struct net *net)
{
struct cma_pernet *pernet = cma_pernet(net);
idr_init(&pernet->tcp_ps);
idr_init(&pernet->udp_ps);
idr_init(&pernet->ipoib_ps);
idr_init(&pernet->ib_ps);
xa_init(&pernet->tcp_ps);
xa_init(&pernet->udp_ps);
xa_init(&pernet->ipoib_ps);
xa_init(&pernet->ib_ps);
return 0;
}
@ -4667,10 +4668,10 @@ static void cma_exit_net(struct net *net)
{
struct cma_pernet *pernet = cma_pernet(net);
idr_destroy(&pernet->tcp_ps);
idr_destroy(&pernet->udp_ps);
idr_destroy(&pernet->ipoib_ps);
idr_destroy(&pernet->ib_ps);
WARN_ON(!xa_empty(&pernet->tcp_ps));
WARN_ON(!xa_empty(&pernet->udp_ps));
WARN_ON(!xa_empty(&pernet->ipoib_ps));
WARN_ON(!xa_empty(&pernet->ib_ps));
}
static struct pernet_operations cma_pernet_operations = {