From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
Matt Helsley <matthltc@us.ibm.com>,
xemul@parallels.com, containers@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, dave@linux.vnet.ibm.com,
mingo@elte.hu
Subject: Re: [PATCH 14/38] Remove struct mm_struct::exe_file et al
Date: Sun, 31 May 2009 16:15:50 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.01.0905311613260.3435@localhost.localdomain> (raw)
In-Reply-To: <20090531151953.8f8b14b5.akpm@linux-foundation.org>
On Sun, 31 May 2009, Andrew Morton wrote:
>
> What I always find a bit weird is that an MM container is used as the
> central point for a number of sched obects. But it's logical, given
> that the never-before-stated definition of a heavyweight process is
> "thing which share a VM".
It has nothing to do with "heavy-weight process" or anything else.
The thing is, from a scheduling standpoint, one of the primary performance
concerns in the TLB switch.
And there's a 1:1 relationship between TLB switch and MM container, modulo
the issue of kernel tasks (and those obviously "borrow" approproate MM
structs to avoid the switch).
So it's not weird at all. It's very direct, and a very straightforward and
obvious relationship.
Linus
next prev parent reply other threads:[~2009-05-31 23:16 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-26 11:36 Matt Helsley
2009-05-26 23:24 ` Andrew Morton
2009-05-31 21:54 ` Alexey Dobriyan
2009-05-31 22:19 ` Andrew Morton
2009-05-31 23:15 ` Linus Torvalds [this message]
2009-05-31 23:50 ` Andrew Morton
2009-06-01 0:02 ` Linus Torvalds
2009-06-03 23:04 ` [PATCH 1/9] exec_path 1/9: introduce ->exec_path and switch /proc/*/exe Alexey Dobriyan
2009-06-03 23:05 ` [PATCH 2/9] exec_path 2/9: switch audit to ->exec_path Alexey Dobriyan
2009-06-03 23:05 ` [PATCH 3/9] exec_path 3/9: switch TOMOYO " Alexey Dobriyan
2009-06-03 23:06 ` [PATCH 4/9] exec_path 4/9: switch oprofile " Alexey Dobriyan
2009-06-03 23:06 ` [PATCH 5/9] exec_path 5/9: make struct spu_context::owner task_struct Alexey Dobriyan
2009-06-03 23:06 ` [PATCH 6/9] exec_path 6/9: add struct spu::tsk Alexey Dobriyan
2009-06-03 23:07 ` [PATCH 7/9] exec_path 7/9: switch cell SPU thing to ->exec_path Alexey Dobriyan
2009-06-03 23:07 ` [PATCH 8/9] exec_path 8/9: remove ->exe_file et al Alexey Dobriyan
2009-06-03 23:08 ` [PATCH 9/9] exec_path 9/9: remove VM_EXECUTABLE Alexey Dobriyan
2009-06-04 7:24 ` Matt Helsley
2009-06-03 23:36 ` [PATCH 1/9] exec_path 1/9: introduce ->exec_path and switch /proc/*/exe Linus Torvalds
2009-06-04 7:55 ` Matt Helsley
2009-06-04 8:10 ` Matt Helsley
2009-06-04 15:07 ` Linus Torvalds
2009-06-04 21:30 ` Matt Helsley
2009-06-04 22:42 ` Alexey Dobriyan
2009-06-05 3:49 ` Matt Helsley
2009-06-05 10:45 ` Christoph Hellwig
2009-06-05 15:10 ` Linus Torvalds
2009-06-05 15:41 ` Alexey Dobriyan
2009-06-05 15:49 ` Linus Torvalds
2009-06-05 16:09 ` Alexey Dobriyan
2009-06-05 16:48 ` Linus Torvalds
2009-06-05 17:46 ` Alexey Dobriyan
2009-06-06 7:22 ` Al Viro
2009-06-15 22:10 ` Alexey Dobriyan
2009-06-01 17:30 ` [PATCH 14/38] Remove struct mm_struct::exe_file et al Matt Helsley
-- strict thread matches above, loose matches on Subject: below --
2009-05-22 4:54 [PATCH 01/38] cred: #include init.h in cred.h Alexey Dobriyan
2009-05-22 4:55 ` [PATCH 14/38] Remove struct mm_struct::exe_file et al Alexey Dobriyan
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