linux-kernel - Re: find_task_by

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Message-ID: <AANLkTinKnLoJUBX5884QkRrDcYiKT=bYJ1zN=a8VSAWy@mail.gmail.com>
Date:	Tue, 10 Aug 2010 10:39:21 +0200
From:	Pistis Valentino <vale.pistis@...il.com>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: find_task_by_pid() problem

2010/8/10 Namhyung Kim <namhyung@...il.com>:
>> I'm using the routine find_task_by_vpid () linux / sched.h (the oldest
>> find_task_by_pid() don't exist), but when I try to compile the file I
>> hello_world.c returns an error:
>
> You can only use kernel's EXPORTed symbol, ie. EXPORT_SYMBOL*(), when you
> write a module program because kernel links it on its own way.
> Try this instead.
>
> pid_task(find_vpid(...), PIDTYPE_PID)
>
Great!
It works!

pid_task(find_vpid(pid), PIDTYPE_PID);

> --
> Regards,
> Namhyung Kim
>
>
>

Thank you!
Ciao
Valentino from Sardegna!
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