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Message-Id: <20171205142300.67489b1a90605e1089c5aaa9@linux-foundation.org> Date: Tue, 5 Dec 2017 14:23:00 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Daniel Jordan <daniel.m.jordan@...cle.com> Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, aaron.lu@...el.com, dave.hansen@...ux.intel.com, mgorman@...hsingularity.net, mhocko@...nel.org, mike.kravetz@...cle.com, pasha.tatashin@...cle.com, steven.sistare@...cle.com, tim.c.chen@...el.com Subject: Re: [RFC PATCH v3 0/7] ktask: multithread CPU-intensive kernel work On Tue, 5 Dec 2017 14:52:13 -0500 Daniel Jordan <daniel.m.jordan@...cle.com> wrote: > This patchset is based on 4.15-rc2 plus one mmots fix[*] and contains three > ktask users: > - deferred struct page initialization at boot time > - clearing gigantic pages > - fallocate for HugeTLB pages Performance improvements are nice. How much overall impact is there in real-world worklaods? > Work in progress: > - Parallelizing page freeing in the exit/munmap paths Also sounds interesting. Have you identified any other parallelizable operations? vfs object teardown at umount time may be one... > - CPU hotplug support Of what? The ktask infrastructure itself?
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