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[PATCH] knfsd: add svc_set_num_threads

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Currently knfsd keeps its own list of all nfsd threads in nfssvc.c; add a new
way of managing the list of all threads in a svc_serv.  Add
svc_create_pooled() to allow creation of a svc_serv whose threads are managed
by the sunrpc code.  Add svc_set_num_threads() to manage the number of threads
in a service, either per-pool or globally across the service.

Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Greg Banks
2006-10-02 02:17:59 -07:00
committed by Linus Torvalds
parent 9a24ab5749
commit a74554429e
3 changed files with 154 additions and 8 deletions
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21
include/linux/sunrpc/svc.h
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@@ -17,6 +17,10 @@
#include <linux/wait.h>
#include <linux/mm.h>
/*
* This is the RPC server thread function prototype
*/
typedef void (*svc_thread_fn)(struct svc_rqst *);
/*
*
@@ -34,6 +38,7 @@ struct svc_pool {
struct list_head sp_threads; /* idle server threads */
struct list_head sp_sockets; /* pending sockets */
unsigned int sp_nrthreads; /* # of threads in pool */
struct list_head sp_all_threads; /* all server threads */
} ____cacheline_aligned_in_smp;
/*
@@ -68,6 +73,11 @@ struct svc_serv {
/* Callback to use when last thread
* exits.
*/
struct module * sv_module; /* optional module to count when
* adding threads */
svc_thread_fn sv_function; /* main function for threads */
int sv_kill_signal; /* signal to kill threads */
};
/*
@@ -164,6 +174,7 @@ static inline void svc_putu32(struct kvec *iov, __be32 val)
*/
struct svc_rqst {
struct list_head rq_list; /* idle list */
struct list_head rq_all; /* all threads list */
struct svc_sock * rq_sock; /* socket */
struct sockaddr_in rq_addr; /* peer address */
int rq_addrlen;
@@ -218,6 +229,7 @@ struct svc_rqst {
* to prevent encrypting page
* cache pages */
wait_queue_head_t rq_wait; /* synchronization */
struct task_struct *rq_task; /* service thread */
};
/*
@@ -358,11 +370,6 @@ struct svc_procedure {
unsigned int pc_xdrressize; /* maximum size of XDR reply */
};
/*
* This is the RPC server thread function prototype
*/
typedef void (*svc_thread_fn)(struct svc_rqst *);
/*
* Function prototypes.
*/
@@ -370,6 +377,10 @@ struct svc_serv * svc_create(struct svc_program *, unsigned int,
void (*shutdown)(struct svc_serv*));
int svc_create_thread(svc_thread_fn, struct svc_serv *);
void svc_exit_thread(struct svc_rqst *);
struct svc_serv * svc_create_pooled(struct svc_program *, unsigned int,
void (*shutdown)(struct svc_serv*),
svc_thread_fn, int sig, struct module *);
int svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
void svc_destroy(struct svc_serv *);
int svc_process(struct svc_rqst *);
int svc_register(struct svc_serv *, int, unsigned short);