From: Russell King <rmk+lkml@arm.linux.org.uk>
To: linux-kernel@vger.kernel.org,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Subject: Re: 2.4.23 *_task_struct() observations ...
Date: Mon, 1 Dec 2003 17:51:28 +0000 [thread overview]
Message-ID: <20031201175128.B13621@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20031201172620.GA312@MAIL.13thfloor.at>; from herbert@13thfloor.at on Mon, Dec 01, 2003 at 06:26:20PM +0100
On Mon, Dec 01, 2003 at 06:26:20PM +0100, Herbert Poetzl wrote:
> just wanted to get an opinion on the following ...
>
> include/asm-i386/processor.h defines ...
>
> #define alloc_task_struct() ((struct task_struct *) \
> __get_free_pages(GFP_KERNEL,1))
> #define free_task_struct(p) free_pages((unsigned long) (p), 1)
> #define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count)
>
> now there seems to be no put_task_struct(), but
> there are some examples where get/free is used
> where I would expect a put_* ...
put_* is free_*. The reference count for the task struct is the page
count (virt_to_page(tsk)->count).
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/
2.6 Serial core
prev parent reply other threads:[~2003-12-01 17:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-01 17:26 2.4.23 *_task_struct() observations Herbert Poetzl
2003-12-01 17:51 ` Russell King [this message]
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