From: Yury Norov Date: Thu, 10 Feb 2022 22:49:03 +0000 (-0800) Subject: RDMA/hfi: Replace cpumask_weight with cpumask_empty where appropriate X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3c8bc3954d771fc4889508ad5d16f084adc4d64d;p=linux.git 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 Reviewed-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 706b3b6597131..877f8e84a672a 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); }