kvm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Randy Dunlap <rdunlap@infradead.org>
To: Daniel Jordan <daniel.m.jordan@oracle.com>,
	linux-mm@kvack.org, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: aarcange@redhat.com, aaron.lu@intel.com,
	akpm@linux-foundation.org, alex.williamson@redhat.com,
	bsd@redhat.com, darrick.wong@oracle.com,
	dave.hansen@linux.intel.com, jgg@mellanox.com,
	jwadams@google.com, jiangshanlai@gmail.com, mhocko@kernel.org,
	mike.kravetz@oracle.com, Pavel.Tatashin@microsoft.com,
	prasad.singamsetty@oracle.com, steven.sistare@oracle.com,
	tim.c.chen@intel.com, tj@kernel.org, vbabka@suse.cz
Subject: Re: [RFC PATCH v4 02/13] ktask: multithread CPU-intensive kernel work
Date: Mon, 5 Nov 2018 12:51:33 -0800	[thread overview]
Message-ID: <736b23a4-cb32-7926-101a-9b6555e59b5e@infradead.org> (raw)
In-Reply-To: <20181105165558.11698-3-daniel.m.jordan@oracle.com>

On 11/5/18 8:55 AM, Daniel Jordan wrote:
> diff --git a/init/Kconfig b/init/Kconfig
> index 41583f468cb4..ed82f76ed0b7 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -346,6 +346,17 @@ config AUDIT_TREE
>  	depends on AUDITSYSCALL
>  	select FSNOTIFY
>  
> +config KTASK
> +	bool "Multithread CPU-intensive kernel work"
> +	depends on SMP
> +	default y
> +	help
> +	  Parallelize CPU-intensive kernel work.  This feature is designed for
> +          big machines that can take advantage of their extra CPUs to speed up
> +	  large kernel tasks.  When enabled, kworker threads may occupy more
> +          CPU time during these kernel tasks, but these threads are throttled
> +          when other tasks on the system need CPU time.

Use tab + 2 spaces consistently for help text indentation, please.

> +
>  source "kernel/irq/Kconfig"
>  source "kernel/time/Kconfig"
>  source "kernel/Kconfig.preempt"


-- 
~Randy

  reply	other threads:[~2018-11-05 20:51 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-05 16:55 [RFC PATCH v4 00/13] ktask: multithread CPU-intensive kernel work Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 01/13] ktask: add documentation Daniel Jordan
2018-11-05 21:19   ` Randy Dunlap
2018-11-06  2:27     ` Daniel Jordan
2018-11-06  8:49   ` Peter Zijlstra
2018-11-06 20:34     ` Daniel Jordan
2018-11-06 20:51       ` Jason Gunthorpe
2018-11-07 10:27         ` Peter Zijlstra
2018-11-07 20:21           ` Daniel Jordan
2018-11-07 10:35       ` Peter Zijlstra
2018-11-07 21:20         ` Daniel Jordan
2018-11-08 17:26   ` Jonathan Corbet
2018-11-08 19:15     ` Daniel Jordan
2018-11-08 19:24       ` Jonathan Corbet
2018-11-27 19:50   ` Pavel Machek
2018-11-28 16:56     ` Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 02/13] ktask: multithread CPU-intensive kernel work Daniel Jordan
2018-11-05 20:51   ` Randy Dunlap [this message]
2018-11-06  2:24     ` Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 03/13] ktask: add undo support Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 04/13] ktask: run helper threads at MAX_NICE Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 05/13] workqueue, ktask: renice helper threads to prevent starvation Daniel Jordan
2018-11-13 16:34   ` Tejun Heo
2018-11-19 16:45     ` Daniel Jordan
2018-11-20 16:33       ` Tejun Heo
2018-11-20 17:03         ` Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 06/13] vfio: parallelize vfio_pin_map_dma Daniel Jordan
2018-11-05 21:51   ` Alex Williamson
2018-11-06  2:42     ` Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 07/13] mm: change locked_vm's type from unsigned long to atomic_long_t Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 08/13] vfio: remove unnecessary mmap_sem writer acquisition around locked_vm Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 09/13] vfio: relieve mmap_sem reader cacheline bouncing by holding it longer Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 10/13] mm: enlarge type of offset argument in mem_map_offset and mem_map_next Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 11/13] mm: parallelize deferred struct page initialization within each node Daniel Jordan
2018-11-10  3:48   ` Elliott, Robert (Persistent Memory)
2018-11-12 16:54     ` Daniel Jordan
2018-11-12 22:15       ` Elliott, Robert (Persistent Memory)
2018-11-19 16:01         ` Daniel Jordan
2018-11-27  0:12           ` Elliott, Robert (Persistent Memory)
2018-11-27 20:23             ` Daniel Jordan
2018-11-19 16:29       ` Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 12/13] mm: parallelize clear_gigantic_page Daniel Jordan
2018-11-05 16:55 ` [RFC PATCH v4 13/13] hugetlbfs: parallelize hugetlbfs_fallocate with ktask Daniel Jordan
2018-11-05 17:29 ` [RFC PATCH v4 00/13] ktask: multithread CPU-intensive kernel work Michal Hocko
2018-11-06  1:29   ` Daniel Jordan
2018-11-06  9:21     ` Michal Hocko
2018-11-07 20:17       ` Daniel Jordan
2018-11-05 18:49 ` Zi Yan
2018-11-06  2:20   ` Daniel Jordan
2018-11-06  2:48     ` Zi Yan
2018-11-06 19:00       ` Daniel Jordan
2018-11-30 19:18 ` Tejun Heo
2018-12-01  0:13   ` Daniel Jordan
2018-12-03 16:16     ` Tejun Heo

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=736b23a4-cb32-7926-101a-9b6555e59b5e@infradead.org \
    --to=rdunlap@infradead.org \
    --cc=Pavel.Tatashin@microsoft.com \
    --cc=aarcange@redhat.com \
    --cc=aaron.lu@intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=alex.williamson@redhat.com \
    --cc=bsd@redhat.com \
    --cc=daniel.m.jordan@oracle.com \
    --cc=darrick.wong@oracle.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=jgg@mellanox.com \
    --cc=jiangshanlai@gmail.com \
    --cc=jwadams@google.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mhocko@kernel.org \
    --cc=mike.kravetz@oracle.com \
    --cc=prasad.singamsetty@oracle.com \
    --cc=steven.sistare@oracle.com \
    --cc=tim.c.chen@intel.com \
    --cc=tj@kernel.org \
    --cc=vbabka@suse.cz \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).