From: Peter Zijlstra <peterz@infradead.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Juri Lelli <juri.lelli@redhat.com>,
David Airlie <airlied@linux.ie>,
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Subject: Re: [patch RFC 00/15] mm/highmem: Provide a preemptible variant of kmap_atomic & friends
Date: Thu, 24 Sep 2020 15:58:05 +0200 [thread overview]
Message-ID: <20200924135805.GN2628@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200924095138.5318d242@oasis.local.home>
On Thu, Sep 24, 2020 at 09:51:38AM -0400, Steven Rostedt wrote:
> > It turns out, that getting selected for pull-balance is exactly that
> > condition, and clearly a migrate_disable() task cannot be pulled, but we
> > can use that signal to try and pull away the running task that's in the
> > way.
>
> Unless of course that running task is in a migrate disable section
> itself ;-)
See my ramblings here:
https://lkml.kernel.org/r/20200924082717.GA1362448@hirez.programming.kicks-ass.net
My plan was to have the migrate_enable() of the running task trigger the
migration in that case.
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next prev parent reply other threads:[~2020-09-24 13:59 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-19 9:17 [patch RFC 00/15] mm/highmem: Provide a preemptible variant of kmap_atomic & friends Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 01/15] mm/highmem: Un-EXPORT __kmap_atomic_idx() Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 02/15] highmem: Provide generic variant of kmap_atomic* Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 03/15] x86/mm/highmem: Use generic kmap atomic implementation Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 04/15] arc/mm/highmem: " Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 05/15] ARM: highmem: Switch to generic kmap atomic Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 06/15] csky/mm/highmem: " Thomas Gleixner
2020-09-23 0:05 ` Guo Ren
2020-09-19 9:17 ` [patch RFC 07/15] microblaze/mm/highmem: " Thomas Gleixner
2020-09-19 9:17 ` [patch RFC 08/15] mips/mm/highmem: " Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 09/15] nds32/mm/highmem: " Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 10/15] powerpc/mm/highmem: " Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 11/15] sparc/mm/highmem: " Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 12/15] xtensa/mm/highmem: " Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 13/15] mm/highmem: Remove the old kmap_atomic cruft Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 14/15] sched: highmem: Store temporary kmaps in task struct Thomas Gleixner
2020-09-19 9:18 ` [patch RFC 15/15] mm/highmem: Provide kmap_temporary* Thomas Gleixner
2020-09-19 10:35 ` [patch RFC 00/15] mm/highmem: Provide a preemptible variant of kmap_atomic & friends Daniel Vetter
2020-09-19 10:37 ` Daniel Vetter
2020-09-20 6:23 ` Thomas Gleixner
2020-09-20 8:23 ` Daniel Vetter
2020-09-20 17:24 ` Thomas Gleixner
2020-09-19 17:18 ` Linus Torvalds
2020-09-19 17:39 ` Matthew Wilcox
2020-09-19 19:13 ` Linus Torvalds
2020-09-21 19:58 ` Ira Weiny
2020-09-20 6:41 ` Thomas Gleixner
2020-09-20 8:49 ` Thomas Gleixner
2020-09-20 16:57 ` Linus Torvalds
2020-09-20 17:40 ` Thomas Gleixner
2020-09-20 17:42 ` Linus Torvalds
2020-09-20 17:58 ` Linus Torvalds
2020-09-21 7:39 ` Thomas Gleixner
2020-09-21 16:24 ` Linus Torvalds
2020-09-21 19:27 ` Thomas Gleixner
2020-09-23 8:40 ` peterz
2020-09-23 13:35 ` Thomas Gleixner
2020-09-23 15:52 ` Steven Rostedt
2020-09-23 20:55 ` Thomas Gleixner
2020-09-23 21:12 ` Steven Rostedt
2020-09-24 6:57 ` Thomas Gleixner
2020-09-24 12:32 ` Steven Rostedt
2020-09-24 12:42 ` Peter Zijlstra
2020-09-24 13:51 ` Steven Rostedt
2020-09-24 13:58 ` Peter Zijlstra [this message]
2020-09-24 17:55 ` Thomas Gleixner
2020-09-24 18:58 ` Steven Rostedt
2020-09-24 8:27 ` peterz
2020-09-24 19:36 ` Daniel Bristot de Oliveira
2020-09-23 10:19 ` peterz
2020-09-23 12:33 ` Thomas Gleixner
2020-09-23 14:33 ` Thomas Gleixner
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