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Message-ID: <xhsmhilkdw9sj.mognet@vschneid.remote.csb> Date: Fri, 21 Oct 2022 15:06:36 +0100 From: Valentin Schneider <vschneid@...hat.com> To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Yury Norov <yury.norov@...il.com>, Rasmus Villemoes <linux@...musvillemoes.dk>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, Mel Gorman <mgorman@...e.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Heiko Carstens <hca@...ux.ibm.com>, Tony Luck <tony.luck@...el.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Gal Pressman <gal@...dia.com>, Tariq Toukan <tariqt@...dia.com>, Jesse Brandeburg <jesse.brandeburg@...el.com> Subject: Re: [PATCH v5 2/3] sched/topology: Introduce for_each_numa_hop_mask() On 21/10/22 16:34, Andy Shevchenko wrote: > On Fri, Oct 21, 2022 at 04:16:17PM +0300, Andy Shevchenko wrote: >> On Fri, Oct 21, 2022 at 01:19:26PM +0100, Valentin Schneider wrote: > > ... > >> > +#define for_each_numa_hop_mask(mask, node) \ >> > + for (unsigned int __hops = 0; \ >> > + /* \ >> > + * Unsightly trickery required as we can't both initialize \ >> > + * @mask and declare __hops in for()'s first clause \ >> > + */ \ >> > + mask = __hops > 0 ? mask : \ >> > + node == NUMA_NO_NODE ? \ >> > + cpu_online_mask : sched_numa_hop_mask(node, 0), \ >> > + !IS_ERR_OR_NULL(mask); \ >> >> > + __hops++, \ >> > + mask = sched_numa_hop_mask(node, __hops)) >> >> This can be unified with conditional, see for_each_gpio_desc_with_flag() as >> example how. > > Something like > > mask = (__hops || node != NUMA_NO_NODE) ? sched_numa_hop_mask(node, __hops) : cpu_online_mask > That does simplify things somewhat, thanks! > -- > With Best Regards, > Andy Shevchenko
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