linux-kernel - Re: [PATCH] powerpc: use is

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Message-ID: <20061220074917.GA4038@APFDCB5C>
Date:	Wed, 20 Dec 2006 16:49:17 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	linux-kernel@...r.kernel.org, Anton Blanchard <anton@...ba.org>
Subject: Re: [PATCH] powerpc: use is_init()

On Wed, Dec 20, 2006 at 03:06:51PM +1100, Paul Mackerras wrote:
> Akinobu Mita writes:
> 
> > Use is_init() rather than hard coded pid comparison.
> 
> What's the context of this patch?  Why is this a good thing to do?
> 

This is just minor cleanup patch.
is_init() is available on 2.6.20-rc1 (include/linux/sched.h):

/**
 * is_init - check if a task structure is init
 * @tsk: Task structure to be checked.
 *
 * Check if a task structure is the first user space task the kernel created.
 */
static inline int is_init(struct task_struct *tsk)
{
        return tsk->pid == 1;
}

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