diff options
| author | Oleg Nesterov | 2013-11-12 15:10:01 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2013-11-13 12:09:23 +0900 |
| commit | 008208c6b26f21c2648c250a09c55e737c02c5f8 (patch) | |
| tree | 14710b8640457d3377b8ddc5d9ed5e41234ed561 | |
| parent | 92a2e1cb53ba649e620b7f02a15ad1fb949c6355 (diff) | |
list: introduce list_next_entry() and list_prev_entry()
Add two trivial helpers list_next_entry() and list_prev_entry(), they
can have a lot of users including list.h itself. In fact the 1st one is
already defined in events/core.c and bnx2x_sp.c, so the patch simply
moves the definition to list.h.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c | 3 | ||||
| -rw-r--r-- | include/linux/list.h | 16 | ||||
| -rw-r--r-- | kernel/events/core.c | 3 |
3 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c index 9fbeee522d2c..32c92abf5094 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c @@ -1217,9 +1217,6 @@ static void bnx2x_set_one_vlan_mac_e1h(struct bnx2x *bp, ETH_VLAN_FILTER_CLASSIFY, config); } -#define list_next_entry(pos, member) \ - list_entry((pos)->member.next, typeof(*(pos)), member) - /** * bnx2x_vlan_mac_restore - reconfigure next MAC/VLAN/VLAN-MAC element * diff --git a/include/linux/list.h b/include/linux/list.h index f4d8a2f12a33..2ece63847001 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -373,6 +373,22 @@ static inline void list_splice_tail_init(struct list_head *list, (!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL) /** + * list_next_entry - get the next element in list + * @pos: the type * to cursor + * @member: the name of the list_struct within the struct. + */ +#define list_next_entry(pos, member) \ + list_entry((pos)->member.next, typeof(*(pos)), member) + +/** + * list_prev_entry - get the prev element in list + * @pos: the type * to cursor + * @member: the name of the list_struct within the struct. + */ +#define list_prev_entry(pos, member) \ + list_entry((pos)->member.prev, typeof(*(pos)), member) + +/** * list_for_each - iterate over a list * @pos: the &struct list_head to use as a loop cursor. * @head: the head for your list. diff --git a/kernel/events/core.c b/kernel/events/core.c index 8c875ef6e120..d724e7757cd1 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -2234,9 +2234,6 @@ static void __perf_event_sync_stat(struct perf_event *event, perf_event_update_userpage(next_event); } -#define list_next_entry(pos, member) \ - list_entry(pos->member.next, typeof(*pos), member) - static void perf_event_sync_stat(struct perf_event_context *ctx, struct perf_event_context *next_ctx) { |