diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2021-11-24 22:40:26 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-11-25 13:29:06 -0400 |
| commit | 223b4d5c8702a92fb18d14e3f32953e474313e5b (patch) | |
| tree | 4d1051dc79a19d2265bfa90b7b7375b615a634bc | |
| parent | 967a578af0c6d0c6c50ee5f9c48216cd2eebe4ef (diff) | |
| download | linux-223b4d5c8702a92fb18d14e3f32953e474313e5b.tar.bz2 | |
RDMA/cxgb4: Use non-atomic bitmap functions when possible
The accesses to the 'alloc->table' bitmap are protected by the
'alloc->lock' spinlock, so no concurrent accesses can happen.
So prefer the non-atomic '__[set|clear]_bit()' functions to save a few
cycles.
Link: https://lore.kernel.org/r/0c1c4505ca32f5ba4126e3e324041da191513ef2.1637789139.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/id_table.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c index e09faa659d68..f64e7e02b129 100644 --- a/drivers/infiniband/hw/cxgb4/id_table.c +++ b/drivers/infiniband/hw/cxgb4/id_table.c @@ -59,7 +59,7 @@ u32 c4iw_id_alloc(struct c4iw_id_table *alloc) alloc->last = obj + 1; if (alloc->last >= alloc->max) alloc->last = 0; - set_bit(obj, alloc->table); + __set_bit(obj, alloc->table); obj += alloc->start; } else obj = -1; @@ -75,7 +75,7 @@ void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj) obj -= alloc->start; spin_lock_irqsave(&alloc->lock, flags); - clear_bit(obj, alloc->table); + __clear_bit(obj, alloc->table); spin_unlock_irqrestore(&alloc->lock, flags); } |