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authorIlya Dryomov <ilya.dryomov@inktank.com>2014-03-21 19:05:30 +0200
committerSage Weil <sage@inktank.com>2014-04-04 21:08:02 -0700
commit2cfa34f2d67a36e292cbe6e4c1e60d212b7ba4d1 (patch)
tree63ab56e96104a41d950d97b3f6d18e248151325f /net/ceph/osdmap.c
parentd286de796aab9e306e674c6d23c4f3c1f55e394c (diff)
downloadlinux-2cfa34f2d67a36e292cbe6e4c1e60d212b7ba4d1.tar.bz2
libceph: primary_affinity infrastructure
Add primary_affinity infrastructure. primary_affinity values are stored in an max_osd-sized array, hanging off ceph_osdmap, similar to a osd_weight array. Introduce {get,set}_primary_affinity() helpers, primarily to return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY when no affinity has been set and to abstract out osd_primary_affinity array allocation and initialization. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
Diffstat (limited to 'net/ceph/osdmap.c')
-rw-r--r--net/ceph/osdmap.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index c2d793d3d98d..0ac129388e07 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -649,6 +649,7 @@ void ceph_osdmap_destroy(struct ceph_osdmap *map)
kfree(map->osd_state);
kfree(map->osd_weight);
kfree(map->osd_addr);
+ kfree(map->osd_primary_affinity);
kfree(map);
}
@@ -685,6 +686,20 @@ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max)
map->osd_weight = weight;
map->osd_addr = addr;
+ if (map->osd_primary_affinity) {
+ u32 *affinity;
+
+ affinity = krealloc(map->osd_primary_affinity,
+ max*sizeof(*affinity), GFP_NOFS);
+ if (!affinity)
+ return -ENOMEM;
+
+ for (i = map->max_osd; i < max; i++)
+ affinity[i] = CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+
+ map->osd_primary_affinity = affinity;
+ }
+
map->max_osd = max;
return 0;
@@ -912,6 +927,38 @@ static int decode_new_primary_temp(void **p, void *end,
return __decode_primary_temp(p, end, map, true);
}
+u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd)
+{
+ BUG_ON(osd >= map->max_osd);
+
+ if (!map->osd_primary_affinity)
+ return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+
+ return map->osd_primary_affinity[osd];
+}
+
+static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff)
+{
+ BUG_ON(osd >= map->max_osd);
+
+ if (!map->osd_primary_affinity) {
+ int i;
+
+ map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32),
+ GFP_NOFS);
+ if (!map->osd_primary_affinity)
+ return -ENOMEM;
+
+ for (i = 0; i < map->max_osd; i++)
+ map->osd_primary_affinity[i] =
+ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+ }
+
+ map->osd_primary_affinity[osd] = aff;
+
+ return 0;
+}
+
/*
* decode a full map.
*/