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Date: Wed, 8 Jul 2015 01:32:26 +0200 From: Oleg Nesterov <oleg@...hat.com> To: akpm@...ux-foundation.org Cc: fweisbec@...il.com, cl@...ux.com, riel@...hat.com, rusty@...tcorp.com.au, tj@...nel.org, linux-kernel@...r.kernel.org Subject: Re: + kmod-remove-unecessary-explicit-wide-cpu-affinity-setting.patch added to -mm tree Well, sorry for noise. Let me repeat that I agree with this change, but... On 07/07, Andrew Morton wrote: > > From: Frederic Weisbecker <fweisbec@...il.com> > Subject: kmod: remove unecessary explicit wide CPU affinity setting > > Not only useless it even breaks nohz full. The housekeeping work (general > kernel internal code that user doesn't care much about) is handled by a > reduced set of CPUs in nohz full, precisely those that are not included by > nohz_full= kernel parameters. For example unbound workqueues are handled > by housekeeping CPUs. I still think this part of the changelog looks confusing and just wrong. It is not that it breaks nohz full, unbound workqueues have nothing to do with housekeeping_mask from the kernel pov. But yes, people can change ->cpumask and this can connect to housekeeping_mask. Frederic, may I ask you to update the changelog? Although perhaps it was just me who was confused... Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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