linux-kernel - [PATCH 5/8] lib/cpumask: update comment to cpumask_local

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Message-Id: <20230325185514.425745-6-yury.norov@gmail.com>
Date:   Sat, 25 Mar 2023 11:55:11 -0700
From:   Yury Norov <yury.norov@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Yury Norov <yury.norov@...il.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Pawel Chmielewski <pawel.chmielewski@...el.com>,
        Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Gal Pressman <gal@...dia.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Barry Song <baohua@...nel.org>
Subject: [PATCH 5/8] lib/cpumask: update comment to cpumask_local_spread()

Now that we have a for_each_numa_cpu(), which is a more straightforward
replacement to the cpumask_local_spread() when it comes to enumeration
of CPUs with respect to NUMA topology, it's worth to update the comment.

Signed-off-by: Yury Norov <yury.norov@...il.com>
---
 lib/cpumask.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/cpumask.c b/lib/cpumask.c
index e7258836b60b..151d1dc5c593 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -127,11 +127,8 @@ void __init free_bootmem_cpumask_var(cpumask_var_t mask)
  *
  * There's a better alternative based on for_each()-like iterators:
  *
- *	for_each_numa_hop_mask(mask, node) {
- *		for_each_cpu_andnot(cpu, mask, prev)
- *			do_something(cpu);
- *		prev = mask;
- *	}
+ *	for_each_numa_cpu(cpu, hop, node, cpu_online_mask)
+ *		do_something(cpu);
  *
  * It's simpler and more verbose than above. Complexity of iterator-based
  * enumeration is O(sched_domains_numa_levels * nr_cpu_ids), while
-- 
2.34.1