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RDMA/core: Simplify restrack interface 

In the current implementation, we have one restrack root per-device and
all users are simply providing it directly. Let's simplify the interface
and have callers provide the ib_device and internally access the
restrack_root.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2019-01-30 12:48:58 +02:00 committed by Jason Gunthorpe
parent 659067b0b5
commit 0ad699c0ed
4 changed files with 29 additions and 28 deletions
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4
drivers/infiniband/core/device.c
View File

@ -287,7 +287,7 @@ struct ib_device *_ib_alloc_device(size_t size)
if (!device)
return NULL;
rdma_restrack_init(&device->res);
rdma_restrack_init(device);
device->dev.class = &ib_class;
device_initialize(&device->dev);
@ -315,7 +315,7 @@ void ib_dealloc_device(struct ib_device *device)
WARN_ON(!list_empty(&device->client_data_list));
WARN_ON(device->reg_state != IB_DEV_UNREGISTERED &&
device->reg_state != IB_DEV_UNINITIALIZED);
rdma_restrack_clean(&device->res);
rdma_restrack_clean(device);
put_device(&device->dev);
}
EXPORT_SYMBOL(ib_dealloc_device);

4
drivers/infiniband/core/nldev.c
View File

@ -314,7 +314,6 @@ static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
[RDMA_RESTRACK_CTX] = "ctx",
};
struct rdma_restrack_root *res = &device->res;
struct nlattr *table_attr;
int ret, i, curr;
@ -328,7 +327,8 @@ static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
if (!names[i])
continue;
curr = rdma_restrack_count(res, i, task_active_pid_ns(current));
curr = rdma_restrack_count(device, i,
task_active_pid_ns(current));
ret = fill_res_info_entry(msg, names[i], curr);
if (ret)
goto err;

26
drivers/infiniband/core/restrack.c
View File

@ -18,8 +18,14 @@ static int fill_res_noop(struct sk_buff *msg,
return 0;
}
void rdma_restrack_init(struct rdma_restrack_root *res)
/**
* rdma_restrack_init() - initialize resource tracking
* @dev: IB device
*/
void rdma_restrack_init(struct ib_device *dev)
{
struct rdma_restrack_root *res = &dev->res;
init_rwsem(&res->rwsem);
res->fill_res_entry = fill_res_noop;
}
@ -38,11 +44,15 @@ static const char *type2str(enum rdma_restrack_type type)
return names[type];
};
void rdma_restrack_clean(struct rdma_restrack_root *res)
/**
* rdma_restrack_clean() - clean resource tracking
* @dev: IB device
*/
void rdma_restrack_clean(struct ib_device *dev)
{
struct rdma_restrack_root *res = &dev->res;
struct rdma_restrack_entry *e;
char buf[TASK_COMM_LEN];
struct ib_device *dev;
const char *owner;
int bkt;
@ -72,10 +82,16 @@ void rdma_restrack_clean(struct rdma_restrack_root *res)
pr_err("restrack: %s", CUT_HERE);
}
int rdma_restrack_count(struct rdma_restrack_root *res,
enum rdma_restrack_type type,
/**
* rdma_restrack_count() - the current usage of specific object
* @dev: IB device
* @type: actual type of object to operate
* @ns: PID namespace
*/
int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
struct pid_namespace *ns)
{
struct rdma_restrack_root *res = &dev->res;
struct rdma_restrack_entry *e;
u32 cnt = 0;

23
include/rdma/restrack.h
View File

@ -49,6 +49,7 @@ enum rdma_restrack_type {
};
#define RDMA_RESTRACK_HASH_BITS 8
struct ib_device;
struct rdma_restrack_entry;
/**
@ -122,25 +123,9 @@ struct rdma_restrack_entry {
bool user;
};
/**
* rdma_restrack_init() - initialize resource tracking
* @res: resource tracking root
*/
void rdma_restrack_init(struct rdma_restrack_root *res);
/**
* rdma_restrack_clean() - clean resource tracking
* @res: resource tracking root
*/
void rdma_restrack_clean(struct rdma_restrack_root *res);
/**
* rdma_restrack_count() - the current usage of specific object
* @res: resource entry
* @type: actual type of object to operate
* @ns: PID namespace
*/
int rdma_restrack_count(struct rdma_restrack_root *res,
void rdma_restrack_init(struct ib_device *dev);
void rdma_restrack_clean(struct ib_device *dev);
int rdma_restrack_count(struct ib_device *dev,
enum rdma_restrack_type type,
struct pid_namespace *ns);