SUNRPC: Clean up tk_pid allocation and make it lockless
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index f56ebc5..0e9fbbd 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -25,7 +25,6 @@
#ifdef RPC_DEBUG
#define RPCDBG_FACILITY RPCDBG_SCHED
#define RPC_TASK_MAGIC_ID 0xf00baa
-static int rpc_task_id;
#endif
/*
@@ -268,17 +267,26 @@
return 0;
}
+#ifdef RPC_DEBUG
+static void rpc_task_set_debuginfo(struct rpc_task *task)
+{
+ static atomic_t rpc_pid;
+
+ task->tk_magic = RPC_TASK_MAGIC_ID;
+ task->tk_pid = atomic_inc_return(&rpc_pid);
+}
+#else
+static inline void rpc_task_set_debuginfo(struct rpc_task *task)
+{
+}
+#endif
+
static void rpc_set_active(struct rpc_task *task)
{
struct rpc_clnt *clnt;
if (test_and_set_bit(RPC_TASK_ACTIVE, &task->tk_runstate) != 0)
return;
-#ifdef RPC_DEBUG
- task->tk_magic = RPC_TASK_MAGIC_ID;
- spin_lock(&rpc_sched_lock);
- task->tk_pid = rpc_task_id++;
- spin_unlock(&rpc_sched_lock);
-#endif
+ rpc_task_set_debuginfo(task);
/* Add to global list of all tasks */
clnt = task->tk_client;
if (clnt != NULL) {