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RDMA: hfi1: simplify find_hw_thread_mask()

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The function opencodes cpumask_nth() and cpumask_clear_cpus(). The
dedicated helpers are easier to use and usually much faster than
opencoded for-loops.

Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
Link: https://patch.msgid.link/20250604193947.11834-4-yury.norov@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Yury Norov [NVIDIA] 2025-06-04 15:39:39 -04:00 committed by Leon Romanovsky
parent 59f7d21385
commit 15b0536313
1 changed files with 4 additions and 12 deletions
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16
drivers/infiniband/hw/hfi1/affinity.c
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@ -963,7 +963,7 @@ void hfi1_put_irq_affinity(struct hfi1_devdata *dd,
static void find_hw_thread_mask(uint hw_thread_no, cpumask_var_t hw_thread_mask,
struct hfi1_affinity_node_list *affinity)
{
int possible, curr_cpu, i;
int curr_cpu;
uint num_cores_per_socket;
cpumask_copy(hw_thread_mask, &affinity->proc.mask);
@ -976,17 +976,9 @@ static void find_hw_thread_mask(uint hw_thread_no, cpumask_var_t hw_thread_mask,
node_affinity.num_online_nodes;
/* Removing other siblings not needed for now */
possible = cpumask_weight(hw_thread_mask);
curr_cpu = cpumask_first(hw_thread_mask);
for (i = 0;
i < num_cores_per_socket * node_affinity.num_online_nodes;
i++)
curr_cpu = cpumask_next(curr_cpu, hw_thread_mask);
for (; i < possible; i++) {
cpumask_clear_cpu(curr_cpu, hw_thread_mask);
curr_cpu = cpumask_next(curr_cpu, hw_thread_mask);
}
curr_cpu = cpumask_cpumask_nth(num_cores_per_socket *
node_affinity.num_online_nodes, hw_thread_mask) + 1;
cpumask_clear_cpus(hw_thread_mask, curr_cpu, nr_cpu_ids - curr_cpu);
/* Identifying correct HW threads within physical cores */
cpumask_shift_left(hw_thread_mask, hw_thread_mask,