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Date: Mon, 13 Dec 2004 08:25:52 -0500 (EST)
From: linux-os <linux-os@chaos.analogic.com>
Reply-To: linux-os@analogic.com
To: Zhenyu Wu <y030729@njupt.edu.cn>
cc: quade@hsnr.de, linux-kernel@vger.kernel.org
Subject: Re: about kernel_thread!
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On Mon, 13 Dec 2004, Zhenyu Wu wrote:

> Oh, my god. I find another problem, my linux kernel is 2.4.20, and i can't find
> the function allow_signal at all. BTW, whether there is such funcion in kernel
> 2.4.20?
>
> Thanks,
> Zhenyu Wu
>

Normally we do our own work... However, if you understand macros,
these might help you.


//
//  Copyright(c)  2004  Analogic Corporation
//
//
//  This program may be distributed under the GNU Public License
//  version 2, as published by the Free Software Foundation, Inc.,
//  59 Temple Place, Suite 330 Boston, MA, 02111.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

#ifndef _CONFIG_H_
#define _CONFIG_H_
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//
//  Below are macros to handle different kernel versions.
//
#ifndef IRQ_HANDLED
#define IRQ_HANDLED 
typedef void irqreturn_t;
#endif

#ifdef KVER6
#define REMAP(a,b,c,d,e) remap_page_range((a), (b), (c), (d), (e))
#define __io_virt(p) ((void *)(p))
#define DAEMONIZE             \
     daemonize("%s", devname); \
     allow_signal(SIGTERM)
#define PCI_FIND_DEVICE(a,b,c) pci_get_device((a),(b),(c))
#else
#define lock_kernel()
#define unlock_kernel()
#define REMAP(a,b,c,d,e) remap_page_range((b), (c), (d), (e))
#define DAEMONIZE                          \
     exit_files(current);                   \
     daemonize();                           \
     spin_lock_irq(&current->sigmask_lock); \
     sigemptyset(&current->blocked);        \
     recalc_sigpending(current);            \
     spin_unlock_irq(&current->sigmask_lock)
#define PCI_FIND_DEVICE(a,b,c) pci_find_device((a),(b),(c))
#endif
#endif


Cheers,
Dick Johnson
Penguin : Linux version 2.6.9 on an i686 machine (5537.79 BogoMips).
  Notice : All mail here is now cached for review by John Ashcroft.
                  98.36% of all statistics are fiction.