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SUNRPC: Add an identifier for struct rpc_clnt

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Add an identifier in order to aid debugging.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-09-04 21:51:44 -04:00
parent 8d1018c774
commit 2f048db468
2 changed files with 26 additions and 0 deletions
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1
include/linux/sunrpc/clnt.h
View File

@ -33,6 +33,7 @@ struct rpc_inode;
*/
struct rpc_clnt {
atomic_t cl_count; /* Number of references */
unsigned int cl_clid; /* client id */
struct list_head cl_clients; /* Global list of clients */
struct list_head cl_tasks; /* List of tasks */
spinlock_t cl_lock; /* spinlock */

25
net/sunrpc/clnt.c
View File

@ -313,6 +313,24 @@ out:
return err;
}
static DEFINE_IDA(rpc_clids);
static int rpc_alloc_clid(struct rpc_clnt *clnt)
{
int clid;
clid = ida_simple_get(&rpc_clids, 0, 0, GFP_KERNEL);
if (clid < 0)
return clid;
clnt->cl_clid = clid;
return 0;
}
static void rpc_free_clid(struct rpc_clnt *clnt)
{
ida_simple_remove(&rpc_clids, clnt->cl_clid);
}
static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
struct rpc_xprt *xprt,
struct rpc_clnt *parent)
@ -343,6 +361,10 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
goto out_err;
clnt->cl_parent = parent ? : clnt;
err = rpc_alloc_clid(clnt);
if (err)
goto out_no_clid;
rcu_assign_pointer(clnt->cl_xprt, xprt);
clnt->cl_procinfo = version->procs;
clnt->cl_maxproc = version->nrprocs;
@ -386,6 +408,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
out_no_path:
rpc_free_iostats(clnt->cl_metrics);
out_no_stats:
rpc_free_clid(clnt);
out_no_clid:
kfree(clnt);
out_err:
rpciod_down();
@ -646,6 +670,7 @@ rpc_free_client(struct rpc_clnt *clnt)
clnt->cl_metrics = NULL;
xprt_put(rcu_dereference_raw(clnt->cl_xprt));
rpciod_down();
rpc_free_clid(clnt);
kfree(clnt);
}