From d70bc0c67c7aaf0d00084b2f91b44fe1a8ae4e15 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 8 Jun 2015 12:09:54 -0700 Subject: nfsd/sunrpc: move pool_mode definitions into svc.h In later patches, we're going to need to allow code external to svc.c to figure out what pool_mode is in use. Move these definitions into svc.h to prepare for that. Also, make the svc_pool_map object available and exported so that other modules can peek in there to get insight into what pool mode is in use. Likewise, export svc_pool_map_get/put function to make it safe to do so. Signed-off-by: Shirley Ma Acked-by: Jeff Layton Tested-by: Shirley Ma Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index fd5bb9922545..3a9baead5c3e 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -427,6 +427,29 @@ struct svc_procedure { unsigned int pc_xdrressize; /* maximum size of XDR reply */ }; +/* + * Mode for mapping cpus to pools. + */ +enum { + SVC_POOL_AUTO = -1, /* choose one of the others */ + SVC_POOL_GLOBAL, /* no mapping, just a single global pool + * (legacy & UP mode) */ + SVC_POOL_PERCPU, /* one pool per cpu */ + SVC_POOL_PERNODE /* one pool per numa node */ +}; + +struct svc_pool_map { + int count; /* How many svc_servs use us */ + int mode; /* Note: int not enum to avoid + * warnings about "enumeration value + * not handled in switch" */ + unsigned int npools; + unsigned int *pool_to; /* maps pool id to cpu or node */ + unsigned int *to_pool; /* maps cpu or node to pool id */ +}; + +extern struct svc_pool_map svc_pool_map; + /* * Function prototypes. */ @@ -438,6 +461,8 @@ struct svc_serv *svc_create(struct svc_program *, unsigned int, struct svc_rqst *svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool, int node); void svc_exit_thread(struct svc_rqst *); +unsigned int svc_pool_map_get(void); +void svc_pool_map_put(void); struct svc_serv * svc_create_pooled(struct svc_program *, unsigned int, struct svc_serv_ops *); int svc_set_num_threads(struct svc_serv *, struct svc_pool *, int); -- cgit v1.2.1