Re: Question regarding thread_struct

From: Robert Love
Date: Tue Mar 08 2005 - 12:22:02 EST

On Tue, 2005-03-08 at 22:34 +0530, Imanpreet Arora wrote:

> I am wondering if someone could provide information as to how
> thread_struct is kept in memory. Robert Love mentions that it is kept
> at the "lowest" kernel address in case of x86 based platform. Could
> anyone answer these questions.

Kernel _stack_ address for the given process.

> a) When a stack is resized, is the thread_struct structure copied onto
> a new place?

This is the kernel stack, not any potential user-space stack. Kernel
stacks are not resized.

> b) What is the advantage of this scheme as against a fixed "virtual-address"?

This is inside of the kernel, not in user-space.

> c) Also could you kindly point the relevant files which do all this
> stuff "shed.c"(?)

See kernel/fork.c and alloc_thread_info() and friends in

Robert Love

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