lkml.org 
[lkml]   [2007]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

* Michael K. Edwards <medwards.linux@gmail.com> wrote:

> 1) Documentation of what you can and can't do safely from a threadlet,
> given that it runs in an unknown thread context;

you can do just about anything from a threadlet, using bog standard
procedural programming. (Certain system-calls are excluded at the moment
out of caution - but i'll probably lift restrictions like sys_clone()
use because sys_clone() can be done safely from a threadlet.)

The code must be thread-safe, because the kernel can move execution to a
new thread anytime and then it will execute in parallel with the main
thread. There's no other requirement.

Wrt. performance, one good model is to run request-alike functionality
from a threadlet, to maximize parallelism.

ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-02-22 00:11    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site