diff options
| author | Jeff Layton <jlayton@kernel.org> | 2026-01-06 13:59:46 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2026-01-28 10:15:42 -0500 |
| commit | 7ffc7ade2cb1138ea5d4ab55cb42c878d44165fb (patch) | |
| tree | c3465707433bd917b668a73cb3e59f55883a0e14 /include | |
| parent | 6cd60f4274b19327ebc5afa0c814b13379c34370 (diff) | |
sunrpc: introduce the concept of a minimum number of threads per pool
Add a new pool->sp_nrthrmin field to track the minimum number of threads
in a pool. Add min_threads parameters to both svc_set_num_threads() and
svc_set_pool_threads(). If min_threads is non-zero and less than the
max, svc_set_num_threads() will ensure that the number of running
threads is between the min and the max.
If the min is 0 or greater than the max, then it is ignored, and the
maximum number of threads will be started, and never spun down.
For now, the min_threads is always 0, but a later patch will pass the
proper value through from nfsd.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sunrpc/svc.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index ec2b6ef54823..8fd511d02f3b 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -36,6 +36,7 @@ struct svc_pool { unsigned int sp_id; /* pool id; also node id on NUMA */ unsigned int sp_nrthreads; /* # of threads currently running in pool */ + unsigned int sp_nrthrmin; /* Min number of threads to run per pool */ unsigned int sp_nrthrmax; /* Max requested number of threads in pool */ struct lwq sp_xprts; /* pending transports */ struct list_head sp_all_threads; /* all server threads */ @@ -72,7 +73,7 @@ struct svc_serv { struct svc_stat * sv_stats; /* RPC statistics */ spinlock_t sv_lock; unsigned int sv_nprogs; /* Number of sv_programs */ - unsigned int sv_nrthreads; /* # of server threads */ + unsigned int sv_nrthreads; /* # of running server threads */ unsigned int sv_max_payload; /* datagram payload size */ unsigned int sv_max_mesg; /* max_payload + 1 page for overheads */ unsigned int sv_xdrsize; /* XDR buffer size */ @@ -448,8 +449,9 @@ struct svc_serv * svc_create_pooled(struct svc_program *prog, unsigned int bufsize, int (*threadfn)(void *data)); int svc_set_pool_threads(struct svc_serv *serv, struct svc_pool *pool, - unsigned int nrservs); -int svc_set_num_threads(struct svc_serv *serv, unsigned int nrservs); + unsigned int min_threads, unsigned int max_threads); +int svc_set_num_threads(struct svc_serv *serv, unsigned int min_threads, + unsigned int nrservs); int svc_pool_stats_open(struct svc_info *si, struct file *file); void svc_process(struct svc_rqst *rqstp); void svc_process_bc(struct rpc_rqst *req, struct svc_rqst *rqstp); |