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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-12-01 14:00:15 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-12-01 14:00:15 -0500
commit7fdcf13b292e8b2e38e42de24be2503e37b2cf97 (patch)
treebd043aea4267abd947a0c3768964533d0d118e85 /net/sunrpc
parentb930c26416c4ea6855726fd977145ccea9afbdda (diff)
downloadop-kernel-dev-7fdcf13b292e8b2e38e42de24be2503e37b2cf97.zip
op-kernel-dev-7fdcf13b292e8b2e38e42de24be2503e37b2cf97.tar.gz
SUNRPC: Fix the execution time statistics in the face of RPC restarts
If the rpc_task gets restarted, then we want to ensure that we don't double-count the execution time statistics, timeout data, etc. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/sched.c30
1 files changed, 23 insertions, 7 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index d12ffa5..00a1a2a 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -590,6 +590,27 @@ void rpc_prepare_task(struct rpc_task *task)
task->tk_ops->rpc_call_prepare(task, task->tk_calldata);
}
+static void
+rpc_init_task_statistics(struct rpc_task *task)
+{
+ /* Initialize retry counters */
+ task->tk_garb_retry = 2;
+ task->tk_cred_retry = 2;
+ task->tk_rebind_retry = 2;
+
+ /* starting timestamp */
+ task->tk_start = ktime_get();
+}
+
+static void
+rpc_reset_task_statistics(struct rpc_task *task)
+{
+ task->tk_timeouts = 0;
+ task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_KILLED|RPC_TASK_SENT);
+
+ rpc_init_task_statistics(task);
+}
+
/*
* Helper that calls task->tk_ops->rpc_call_done if it exists
*/
@@ -602,6 +623,7 @@ void rpc_exit_task(struct rpc_task *task)
WARN_ON(RPC_ASSASSINATED(task));
/* Always release the RPC slot and buffer memory */
xprt_release(task);
+ rpc_reset_task_statistics(task);
}
}
}
@@ -804,11 +826,6 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta
task->tk_calldata = task_setup_data->callback_data;
INIT_LIST_HEAD(&task->tk_task);
- /* Initialize retry counters */
- task->tk_garb_retry = 2;
- task->tk_cred_retry = 2;
- task->tk_rebind_retry = 2;
-
task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW;
task->tk_owner = current->tgid;
@@ -818,8 +835,7 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta
if (task->tk_ops->rpc_call_prepare != NULL)
task->tk_action = rpc_prepare_task;
- /* starting timestamp */
- task->tk_start = ktime_get();
+ rpc_init_task_statistics(task);
dprintk("RPC: new task initialized, procpid %u\n",
task_pid_nr(current));
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