From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Yury Norov <yury.norov@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org, Saeed Mahameed <saeedm@nvidia.com>,
Pawel Chmielewski <pawel.chmielewski@intel.com>,
Leon Romanovsky <leon@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Valentin Schneider <vschneid@redhat.com>,
Tariq Toukan <tariqt@nvidia.com>, Gal Pressman <gal@nvidia.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Heiko Carstens <hca@linux.ibm.com>,
Barry Song <baohua@kernel.org>
Subject: Re: [PATCH 2/8] sched/topology: introduce sched_numa_find_next_cpu()
Date: Mon, 27 Mar 2023 13:28:12 +0300 [thread overview]
Message-ID: <ZCFvvHZXT/dqjOOb@smile.fi.intel.com> (raw)
In-Reply-To: <20230325185514.425745-3-yury.norov@gmail.com>
On Sat, Mar 25, 2023 at 11:55:08AM -0700, Yury Norov wrote:
> The function searches for the next CPU in a given cpumask according to
> NUMA topology, so that it traverses cpus per-hop.
>
> If the CPU is the last cpu in a given hop, sched_numa_find_next_cpu()
> switches to the next hop, and picks the first CPU from there, excluding
> those already traversed.
...
> +/*
Hmm... Is it deliberately not a kernel doc?
> + * sched_numa_find_next_cpu() - given the NUMA topology, find the next cpu
> + * cpumask: cpumask to find a cpu from
> + * cpu: current cpu
> + * node: local node
> + * hop: (in/out) indicates distance order of current CPU to a local node
> + *
> + * The function searches for next cpu at a given NUMA distance, indicated
> + * by hop, and if nothing found, tries to find CPUs at a greater distance,
> + * starting from the beginning.
> + *
> + * returns: cpu, or >= nr_cpu_ids when nothing found.
> + */
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-03-27 10:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-25 18:55 [PATCH 0/8] sched/topology: add for_each_numa_cpu() macro Yury Norov
2023-03-25 18:55 ` [PATCH 1/8] lib/find: add find_next_and_andnot_bit() Yury Norov
2023-03-27 10:26 ` Andy Shevchenko
2023-03-25 18:55 ` [PATCH 2/8] sched/topology: introduce sched_numa_find_next_cpu() Yury Norov
2023-03-27 10:28 ` Andy Shevchenko [this message]
2023-04-10 18:00 ` Yury Norov
2023-03-25 18:55 ` [PATCH 3/8] sched/topology: add for_each_numa_cpu() macro Yury Norov
2023-04-10 18:05 ` Yury Norov
2023-03-25 18:55 ` [PATCH 4/8] net: mlx5: switch comp_irqs_request() to using for_each_numa_cpu Yury Norov
2023-03-25 18:55 ` [PATCH 5/8] lib/cpumask: update comment to cpumask_local_spread() Yury Norov
2023-03-25 18:55 ` [PATCH 6/8] sched/topology: export sched_domains_numa_levels Yury Norov
2023-03-25 18:55 ` [PATCH 7/8] lib: add test for for_each_numa_{cpu,hop_mask}() Yury Norov
2023-03-25 18:55 ` [RFC PATCH 8/8] sched: drop for_each_numa_hop_mask() Yury Norov
2023-04-10 18:09 ` [PATCH 0/8] sched/topology: add for_each_numa_cpu() macro Yury Norov
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