diff options
| author | Yury Norov <yury.norov@gmail.com> | 2022-02-10 14:49:03 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-02-11 15:07:30 -0400 |
| commit | 3c8bc3954d771fc4889508ad5d16f084adc4d64d (patch) | |
| tree | 86a79ff21b9779dc84d5b64549a1c78062ff248f /drivers | |
| parent | 2f1b2820b546c1eef07d15ed73db4177c0cf6d46 (diff) | |
| download | linux-3c8bc3954d771fc4889508ad5d16f084adc4d64d.tar.bz2 | |
RDMA/hfi: Replace cpumask_weight with cpumask_empty where appropriate
drivers/infiniband/hw/hfi1/affinity.c code calls cpumask_weight() to check
if any bit of a given cpumask is set. We can do it more efficiently with
cpumask_empty() because cpumask_empty() stops traversing the cpumask as
soon as it finds first set bit, while cpumask_weight() counts all bits
unconditionally.
Link: https://lore.kernel.org/r/20220210224933.379149-20-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/affinity.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 706b3b659713..877f8e84a672 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -666,7 +666,7 @@ int hfi1_dev_affinity_init(struct hfi1_devdata *dd) * engines, use the same CPU cores as general/control * context. */ - if (cpumask_weight(&entry->def_intr.mask) == 0) + if (cpumask_empty(&entry->def_intr.mask)) cpumask_copy(&entry->def_intr.mask, &entry->general_intr_mask); } @@ -686,7 +686,7 @@ int hfi1_dev_affinity_init(struct hfi1_devdata *dd) * vectors, use the same CPU core as the general/control * context. */ - if (cpumask_weight(&entry->comp_vect_mask) == 0) + if (cpumask_empty(&entry->comp_vect_mask)) cpumask_copy(&entry->comp_vect_mask, &entry->general_intr_mask); } |