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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-01-10 10:32:00 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 09:20:32 -0500 |
| commit | ccf08bed6e7a80519569456edd2ea21b7b1701c6 (patch) | |
| tree | 5895f6b9e423350291c32b02a990a9b8d1b988ac /net/sunrpc/svc.c | |
| parent | 65ba3d2425bf51165b6e88509c632bd15d12883d (diff) | |
| download | linux-ccf08bed6e7a80519569456edd2ea21b7b1701c6.tar.gz linux-ccf08bed6e7a80519569456edd2ea21b7b1701c6.tar.bz2 linux-ccf08bed6e7a80519569456edd2ea21b7b1701c6.zip | |
SUNRPC: Replace pool stats with per-CPU variables
Eliminate the use of bus-locked operations in svc_xprt_enqueue(),
which is a hot path. Replace them with per-cpu variables to reduce
cross-CPU memory bus traffic.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/svc.c')
| -rw-r--r-- | net/sunrpc/svc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 5dc298c30ea8..1fd3f5e57285 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -512,6 +512,10 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools, INIT_LIST_HEAD(&pool->sp_sockets); INIT_LIST_HEAD(&pool->sp_all_threads); spin_lock_init(&pool->sp_lock); + + percpu_counter_init(&pool->sp_sockets_queued, 0, GFP_KERNEL); + percpu_counter_init(&pool->sp_threads_woken, 0, GFP_KERNEL); + percpu_counter_init(&pool->sp_threads_timedout, 0, GFP_KERNEL); } return serv; @@ -565,6 +569,7 @@ void svc_destroy(struct kref *ref) { struct svc_serv *serv = container_of(ref, struct svc_serv, sv_refcnt); + unsigned int i; dprintk("svc: svc_destroy(%s)\n", serv->sv_program->pg_name); timer_shutdown_sync(&serv->sv_temptimer); @@ -580,6 +585,13 @@ svc_destroy(struct kref *ref) svc_pool_map_put(serv->sv_nrpools); + for (i = 0; i < serv->sv_nrpools; i++) { + struct svc_pool *pool = &serv->sv_pools[i]; + + percpu_counter_destroy(&pool->sp_sockets_queued); + percpu_counter_destroy(&pool->sp_threads_woken); + percpu_counter_destroy(&pool->sp_threads_timedout); + } kfree(serv->sv_pools); kfree(serv); } |