diff options
| author | Yury Norov [NVIDIA] <yury.norov@gmail.com> | 2025-06-04 15:39:40 -0400 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2025-06-26 05:19:39 -0400 |
| commit | 59ae2e3c6ad798072adbe9429534092fd471592c (patch) | |
| tree | 23d5b57da167d20762ed73fee7442d2ee8d9cb5d | |
| parent | 15b0536313045c3fdd374b99f747b15278ac8895 (diff) | |
RDMA: hfi1: simplify init_real_cpu_mask()
The function opencodes cpumask_nth() and cpumask_clear_cpus(). The
dedicated helpers are easier to use and usually much faster than
opencoded for-loops.
While there, drop useless clear of real_cpu_mask.
Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
Link: https://patch.msgid.link/20250604193947.11834-5-yury.norov@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/hw/hfi1/affinity.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 9ea80b777061..b2884226827a 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -92,9 +92,7 @@ static void cpu_mask_set_put(struct cpu_mask_set *set, int cpu) /* Initialize non-HT cpu cores mask */ void init_real_cpu_mask(void) { - int possible, curr_cpu, i, ht; - - cpumask_clear(&node_affinity.real_cpu_mask); + int possible, curr_cpu, ht; /* Start with cpu online mask as the real cpu mask */ cpumask_copy(&node_affinity.real_cpu_mask, cpu_online_mask); @@ -110,17 +108,10 @@ void init_real_cpu_mask(void) * "real" cores. Assumes that HT cores are not enumerated in * succession (except in the single core case). */ - curr_cpu = cpumask_first(&node_affinity.real_cpu_mask); - for (i = 0; i < possible / ht; i++) - curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask); - /* - * Step 2. Remove the remaining HT siblings. Use cpumask_next() to - * skip any gaps. - */ - for (; i < possible; i++) { - cpumask_clear_cpu(curr_cpu, &node_affinity.real_cpu_mask); - curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask); - } + curr_cpu = cpumask_nth(possible / ht, &node_affinity.real_cpu_mask) + 1; + + /* Step 2. Remove the remaining HT siblings. */ + cpumask_clear_cpus(&node_affinity.real_cpu_mask, curr_cpu, nr_cpu_ids - curr_cpu); } int node_affinity_init(void) |