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authorJeff Layton <jlayton@primarydata.com>2015-06-08 22:09:54 +0300
committerJ. Bruce Fields <bfields@redhat.com>2015-08-10 23:05:43 +0300
commitd70bc0c67c7aaf0d00084b2f91b44fe1a8ae4e15 (patch)
treea6542e7c8c30fe37b74b4f13af22c55d9c1dd224 /net/sunrpc/svc.c
parent598e2359090d393b01a8e10386dc3056ccfa47ae (diff)
downloadlinux-d70bc0c67c7aaf0d00084b2f91b44fe1a8ae4e15.tar.xz
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 <shirley.ma@oracle.com> Acked-by: Jeff Layton <jlayton@primarydata.com> Tested-by: Shirley Ma <shirley.ma@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/svc.c')
-rw-r--r--net/sunrpc/svc.c31
1 files changed, 7 insertions, 24 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 5a6be22a7904..486c14bf4e49 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -36,34 +36,17 @@ static void svc_unregister(const struct svc_serv *serv, struct net *net);
#define svc_serv_is_pooled(serv) ((serv)->sv_ops->svo_function)
-/*
- * 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 */
-};
#define SVC_POOL_DEFAULT SVC_POOL_GLOBAL
/*
* Structure for mapping cpus to pools and vice versa.
* Setup once during sunrpc initialisation.
*/
-static 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 */
-} svc_pool_map = {
- .count = 0,
+struct svc_pool_map svc_pool_map = {
.mode = SVC_POOL_DEFAULT
};
+EXPORT_SYMBOL_GPL(svc_pool_map);
+
static DEFINE_MUTEX(svc_pool_map_mutex);/* protects svc_pool_map.count only */
static int
@@ -236,7 +219,7 @@ svc_pool_map_init_pernode(struct svc_pool_map *m)
* vice versa). Initialise the map if we're the first user.
* Returns the number of pools.
*/
-static unsigned int
+unsigned int
svc_pool_map_get(void)
{
struct svc_pool_map *m = &svc_pool_map;
@@ -271,7 +254,7 @@ svc_pool_map_get(void)
mutex_unlock(&svc_pool_map_mutex);
return m->npools;
}
-
+EXPORT_SYMBOL_GPL(svc_pool_map_get);
/*
* Drop a reference to the global map of cpus to pools.
@@ -280,7 +263,7 @@ svc_pool_map_get(void)
* mode using the pool_mode module option without
* rebooting or re-loading sunrpc.ko.
*/
-static void
+void
svc_pool_map_put(void)
{
struct svc_pool_map *m = &svc_pool_map;
@@ -297,7 +280,7 @@ svc_pool_map_put(void)
mutex_unlock(&svc_pool_map_mutex);
}
-
+EXPORT_SYMBOL_GPL(svc_pool_map_put);
static int svc_pool_map_get_node(unsigned int pidx)
{