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| author | Anand Khoje <anand.a.khoje@oracle.com> | 2021-06-16 18:45:08 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-06-22 02:49:32 +0300 |
| commit | 84dcd8c7eab8bc29a6eb402b535651171a9a9d54 (patch) | |
| tree | 4369b068352b8d116e9846f0efc2680aa67a2057 /include/rdma | |
| parent | c5f8f2c5e5bfd4fd5fc5c413051ad14b7873b1fd (diff) | |
| download | linux-84dcd8c7eab8bc29a6eb402b535651171a9a9d54.tar.xz | |
IB/core: Shuffle locks in ib_port_data to save memory
pahole shows two 4-byte holes in struct ib_port_data after pkey_list_lock
and netdev_lock respectively.
Shuffling the netdev_lock to be after pkey_list_lock, this shaves off
eight bytes from the struct.
Link: https://lore.kernel.org/r/20210616154509.1047-3-anand.a.khoje@oracle.com
Suggested-by: Haakon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Anand Khoje <anand.a.khoje@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 34971c7b988f..371df1c80aeb 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2176,11 +2176,13 @@ struct ib_port_data { struct ib_port_immutable immutable; spinlock_t pkey_list_lock; + + spinlock_t netdev_lock; + struct list_head pkey_list; struct ib_port_cache cache; - spinlock_t netdev_lock; struct net_device __rcu *netdev; struct hlist_node ndev_hash_link; struct rdma_port_counter port_counter; |