Messages in this thread | | | Date | Thu, 22 Feb 2007 00:03:51 +0100 | From | Ingo Molnar <> | Subject | Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 |
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* 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.
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