linux-kernel - How to walk through the tasklist ?

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Message-Id: <20070424145827.467595a6.skraw@ithnet.com>
Date:	Tue, 24 Apr 2007 14:58:27 +0200
From:	Stephan von Krawczynski <skraw@...net.com>
To:	linux-kernel@...r.kernel.org
Subject: How to walk through the tasklist ?

Hello all,

can anyone give me a short hint how walking through the tasklist in a device
driver can be achieved nowadays. In ancient pre-20 times you could simply:

    read_lock(&tasklist_lock);
    p=current; 
    do {
        if (p->pid==pid) {  
            read_unlock(&tasklist_lock);
            /* found */
        }
        p=p->next_task;
    } while (p!=current);
    read_unlock(&tasklist_lock);

But since tasklist_lock is gone this is not safe any longer. So, what can I do?

-- 
Regards,
Stephan

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