diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2016-10-24 14:40:04 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-27 16:16:09 -0400 |
| commit | 2ae0f17df1cd52aafd1ab0415ea1f1dd56dc0e2a (patch) | |
| tree | 492385624b87bc97c0ace5f8439606779de71802 /include/uapi/linux/genetlink.h | |
| parent | 489111e5c25b93be80340c3113d71903d7c82136 (diff) | |
genetlink: use idr to track families
Since generic netlink family IDs are small integers, allocated
densely, IDR is an ideal match for lookups. Replace the existing
hand-written hash-table with IDR for allocation and lookup.
This lets the families only be written to once, during register,
since the list_head can be removed and removal of a family won't
cause any writes.
It also slightly reduces the code size (by about 1.3k on x86-64).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/genetlink.h')
| -rw-r--r-- | include/uapi/linux/genetlink.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/genetlink.h b/include/uapi/linux/genetlink.h index d9b2db4a29c6..adc899381e0d 100644 --- a/include/uapi/linux/genetlink.h +++ b/include/uapi/linux/genetlink.h @@ -29,6 +29,8 @@ struct genlmsghdr { #define GENL_ID_CTRL NLMSG_MIN_TYPE #define GENL_ID_VFS_DQUOT (NLMSG_MIN_TYPE + 1) #define GENL_ID_PMCRAID (NLMSG_MIN_TYPE + 2) +/* must be last reserved + 1 */ +#define GENL_START_ALLOC (NLMSG_MIN_TYPE + 3) /************************************************************************** * Controller |