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From: Yury Norov <yury.norov@gmail.com>
To: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
	Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,
	Yury Norov <yury.norov@gmail.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 6/7] RDMA: hfi1: simplify hfi1_get_proc_affinity()
Date: Wed,  4 Jun 2025 15:39:42 -0400	[thread overview]
Message-ID: <20250604193947.11834-7-yury.norov@gmail.com> (raw)
In-Reply-To: <20250604193947.11834-1-yury.norov@gmail.com>

From: "Yury Norov [NVIDIA]" <yury.norov@gmail.com>

The function protects the for loop with affinity->num_core_siblings > 0
condition, which is redundant because the loop will break immediately in
that case.

Drop it and save one indentation level.

Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
---
 drivers/infiniband/hw/hfi1/affinity.c | 28 +++++++++++++--------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c
index 7fa894c23fea..8974aa1e63d1 100644
--- a/drivers/infiniband/hw/hfi1/affinity.c
+++ b/drivers/infiniband/hw/hfi1/affinity.c
@@ -1069,22 +1069,20 @@ int hfi1_get_proc_affinity(int node)
 	 * If HT cores are enabled, identify which HW threads within the
 	 * physical cores should be used.
 	 */
-	if (affinity->num_core_siblings > 0) {
-		for (i = 0; i < affinity->num_core_siblings; i++) {
-			find_hw_thread_mask(i, hw_thread_mask, affinity);
+	for (i = 0; i < affinity->num_core_siblings; i++) {
+		find_hw_thread_mask(i, hw_thread_mask, affinity);
 
-			/*
-			 * If there's at least one available core for this HW
-			 * thread number, stop looking for a core.
-			 *
-			 * diff will always be not empty at least once in this
-			 * loop as the used mask gets reset when
-			 * (set->mask == set->used) before this loop.
-			 */
-			cpumask_andnot(diff, hw_thread_mask, &set->used);
-			if (!cpumask_empty(diff))
-				break;
-		}
+		/*
+		 * If there's at least one available core for this HW
+		 * thread number, stop looking for a core.
+		 *
+		 * diff will always be not empty at least once in this
+		 * loop as the used mask gets reset when
+		 * (set->mask == set->used) before this loop.
+		 */
+		cpumask_andnot(diff, hw_thread_mask, &set->used);
+		if (!cpumask_empty(diff))
+			break;
 	}
 	hfi1_cdbg(PROC, "Same available HW thread on all physical CPUs: %*pbl",
 		  cpumask_pr_args(hw_thread_mask));
-- 
2.43.0


  parent reply	other threads:[~2025-06-04 19:40 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-04 19:39 [PATCH 0/7] RDMA: hfi1: cpumasks usage fixes Yury Norov
2025-06-04 19:39 ` [PATCH 1/7] cpumask: add cpumask_clear_cpus() Yury Norov
2025-06-04 19:39 ` [PATCH 2/7] RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() Yury Norov
2025-06-04 19:39 ` [PATCH 3/7] RDMA: hfi1: simplify find_hw_thread_mask() Yury Norov
2025-06-04 19:39 ` [PATCH 4/7] RDMA: hfi1: simplify init_real_cpu_mask() Yury Norov
2025-06-04 19:39 ` [PATCH 5/7] RDMA: hfi1: use rounddown in find_hw_thread_mask() Yury Norov
2025-06-04 19:39 ` Yury Norov [this message]
2025-06-04 19:39 ` [PATCH 7/7] RDMI: hfi1: drop cpumask_empty() call in hfi1/affinity.c Yury Norov
2025-06-12  8:12 ` [PATCH 0/7] RDMA: hfi1: cpumasks usage fixes Leon Romanovsky
2025-06-21 15:03   ` Yury Norov
2025-06-23 16:23     ` Dennis Dalessandro
2025-06-25 10:41       ` Leon Romanovsky
2025-06-25 10:41 ` Leon Romanovsky

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