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SUNRPC: Clean up the initialisation of priority queue scheduling info.

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We want the default scheduling priority (priority == 0) to remain
RPC_PRIORITY_NORMAL.

Also ensure that the priority wait queue scheduling is per process id
instead of sometimes being per thread, and sometimes being per inode.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-07-14 15:40:00 -04:00
parent c970aa85e7
commit 3ff7576dda
5 changed files with 29 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/linux/sunrpc/sched.h
View file

@ -56,8 +56,6 @@ struct rpc_task {
__u8 tk_garb_retry;
__u8 tk_cred_retry;
unsigned long tk_cookie; /* Cookie for batching tasks */
/*
* timeout_fn to be executed by timer bottom half
* callback to be executed after waking up
@ -78,7 +76,6 @@ struct rpc_task {
struct timer_list tk_timer; /* kernel timer */
unsigned long tk_timeout; /* timeout for rpc_sleep() */
unsigned short tk_flags; /* misc flags */
unsigned char tk_priority : 2;/* Task priority */
unsigned long tk_runstate; /* Task run status */
struct workqueue_struct *tk_workqueue; /* Normally rpciod, but could
* be any workqueue
@ -94,6 +91,9 @@ struct rpc_task {
unsigned long tk_start; /* RPC task init timestamp */
long tk_rtt; /* round-trip time (jiffies) */
pid_t tk_owner; /* Process id for batching tasks */
unsigned char tk_priority : 2;/* Task priority */
#ifdef RPC_DEBUG
unsigned short tk_pid; /* debugging aid */
#endif
@ -123,6 +123,7 @@ struct rpc_task_setup {
const struct rpc_call_ops *callback_ops;
void *callback_data;
unsigned short flags;
signed char priority;
};
/*
@ -187,10 +188,10 @@ struct rpc_task_setup {
* Note: if you change these, you must also change
* the task initialization definitions below.
*/
#define RPC_PRIORITY_LOW 0
#define RPC_PRIORITY_NORMAL 1
#define RPC_PRIORITY_HIGH 2
#define RPC_NR_PRIORITY (RPC_PRIORITY_HIGH+1)
#define RPC_PRIORITY_LOW (-1)
#define RPC_PRIORITY_NORMAL (0)
#define RPC_PRIORITY_HIGH (1)
#define RPC_NR_PRIORITY (1 + RPC_PRIORITY_HIGH - RPC_PRIORITY_LOW)
/*
* RPC synchronization objects
@ -198,7 +199,7 @@ struct rpc_task_setup {
struct rpc_wait_queue {
spinlock_t lock;
struct list_head tasks[RPC_NR_PRIORITY]; /* task queue for each priority level */
unsigned long cookie; /* cookie of last task serviced */
pid_t owner; /* process id of last task serviced */
unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */
unsigned char priority; /* current priority */
unsigned char count; /* # task groups remaining serviced so far */