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RDMA/mlx5: Move xlt_emergency_page_mutex into mr.c 

This is the only user, so remove the wrappers.

Link: https://lore.kernel.org/r/20201026132314.1336717-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2020-10-26 15:23:11 +02:00
parent aab8d3966d
commit f22c30aa6d
3 changed files with 19 additions and 22 deletions
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20
drivers/infiniband/hw/mlx5/main.c
View File

@ -75,12 +75,6 @@ static LIST_HEAD(mlx5_ib_dev_list);
*/
static DEFINE_MUTEX(mlx5_ib_multiport_mutex);
/* We can't use an array for xlt_emergency_page because dma_map_single
* doesn't work on kernel modules memory
*/
static unsigned long xlt_emergency_page;
static struct mutex xlt_emergency_page_mutex;
struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi)
{
struct mlx5_ib_dev *dev;
@ -4804,17 +4798,6 @@ static struct mlx5_interface mlx5_ib_interface = {
.protocol = MLX5_INTERFACE_PROTOCOL_IB,
};
unsigned long mlx5_ib_get_xlt_emergency_page(void)
{
mutex_lock(&xlt_emergency_page_mutex);
return xlt_emergency_page;
}
void mlx5_ib_put_xlt_emergency_page(void)
{
mutex_unlock(&xlt_emergency_page_mutex);
}
static int __init mlx5_ib_init(void)
{
int err;
@ -4823,8 +4806,6 @@ static int __init mlx5_ib_init(void)
if (!xlt_emergency_page)
return -ENOMEM;
mutex_init(&xlt_emergency_page_mutex);
mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0);
if (!mlx5_ib_event_wq) {
free_page(xlt_emergency_page);
@ -4842,7 +4823,6 @@ static void __exit mlx5_ib_cleanup(void)
{
mlx5_unregister_interface(&mlx5_ib_interface);
destroy_workqueue(mlx5_ib_event_wq);
mutex_destroy(&xlt_emergency_page_mutex);
free_page(xlt_emergency_page);
}

3
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -1454,8 +1454,7 @@ static inline int get_num_static_uars(struct mlx5_ib_dev *dev,
return get_uars_per_sys_page(dev, bfregi->lib_uar_4k) * bfregi->num_static_sys_pages;
}
unsigned long mlx5_ib_get_xlt_emergency_page(void);
void mlx5_ib_put_xlt_emergency_page(void);
extern unsigned long xlt_emergency_page;
int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi, u32 bfregn,

18
drivers/infiniband/hw/mlx5/mr.c
View File

@ -41,6 +41,13 @@
#include <rdma/ib_verbs.h>
#include "mlx5_ib.h"
/*
* We can't use an array for xlt_emergency_page because dma_map_single doesn't
* work on kernel modules memory
*/
unsigned long xlt_emergency_page;
static DEFINE_MUTEX(xlt_emergency_page_mutex);
enum {
MAX_PENDING_REG_MR = 8,
};
@ -992,6 +999,17 @@ static struct mlx5_ib_mr *alloc_mr_from_cache(struct ib_pd *pd,
MLX5_UMR_MTT_ALIGNMENT)
#define MLX5_SPARE_UMR_CHUNK 0x10000
static unsigned long mlx5_ib_get_xlt_emergency_page(void)
{
mutex_lock(&xlt_emergency_page_mutex);
return xlt_emergency_page;
}
static void mlx5_ib_put_xlt_emergency_page(void)
{
mutex_unlock(&xlt_emergency_page_mutex);
}
int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
int page_shift, int flags)
{