linux-toradex.git/include/linux/sunrpc/sched.h, branch v2.6.27.20

rpc: minor cleanup of scheduler callback code

2008-07-09T16:09:14+00:00

Try to make the comment here a little more clear and concise.

Also, this macro definition seems unnecessary.

Signed-off-by: J. Bruce Fields 
Signed-off-by: Trond Myklebust

SUNRPC: Remove now-redundant RCU-safe rpc_task free path

2008-02-29T07:26:28+00:00

Now that we've tightened up the locking rules for RPC queue wakeups, we can
remove the RCU-safe kfree calls...

Signed-off-by: Trond Myklebust

SUNRPC: Eliminate the now-redundant rpc_start_wakeup()

2008-02-29T07:26:25+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Switch tasks to using the rpc_waitqueue's timer function

2008-02-29T07:26:21+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Add a timer function to wait queues.

2008-02-29T07:21:59+00:00

This is designed to replace the timeout timer in the individual rpc_tasks.
By putting the timer function in the wait queue, we will eventually be able
to reduce the total number of timers in use by the RPC subsystem.

Signed-off-by: Trond Myklebust

SUNRPC: Add a (empty for the moment) destructor for rpc_wait_queues

2008-02-29T07:17:27+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Run rpc timeout functions as callbacks instead of in softirqs

2008-02-26T05:40:44+00:00

An audit of the current RPC timeout functions shows that they don't really
ever need to run in the softirq context. As long as the softirq is
able to signal that the wakeup is due to a timeout (which it can do by
setting task->tk_status to -ETIMEDOUT) then the callback functions can just
run as standard task->tk_callback functions (in the rpciod/process
context).

The only possible border-line case would be xprt_timer() for the case of
UDP, when the callback is used to reduce the size of the transport
congestion window. In testing, however, the effect of moving that update
to a callback would appear to be minor.

Signed-off-by: Trond Myklebust

SUNRPC: Convert users of rpc_wake_up_task to use rpc_wake_up_queued_task

2008-02-26T05:40:42+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Add a new helper rpc_wake_up_queued_task()

2008-02-26T05:40:40+00:00

In all cases where we currently use rpc_wake_up_task(), we almost always
know on which waitqueue the rpc_task is actually sleeping. This will allows
us to simplify the queue locking in a future patch.

Signed-off-by: Trond Myklebust

SUNRPC: Allow the rpc_release() callback to be run on another workqueue

2008-02-26T05:40:34+00:00

A lot of the work done by the rpc_release() callback is inappropriate for
rpciod as it will often involve things like starting a new rpc call in
order to clean up state after an interrupted NFSv4 open() call, or
calls to mntput(), etc.

This patch allows the caller of rpc_run_task() to specify that the
rpc_release callback should run on a different workqueue than the default
rpciod_workqueue.

Signed-off-by: Trond Myklebust