linux-kernel - Create proc entry under /proc/sys/kernel

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Message-ID: <484B91B9.5060204@gmail.com>
Date:	Sun, 08 Jun 2008 16:00:57 +0800
From:	RuoMu Hu <huruomu@...il.com>
To:	linux-kernel@...r.kernel.org
CC:	linux-serial@...r.kernel.org, linux-net@...r.kernel.org
Subject: Create proc entry under /proc/sys/kernel

Hi!

Is it possible to create a proc entry under /proc/sys/kernel directly by 
create_proc_read_entry in the way shown below?

test_pde = create_proc_read_entry("/proc/sys/kernel/test", 0, NULL,
                                    test_read_proc, NULL);
if (test_pde == NULL) {
    printk(KERN_ERR "Failed to create the test proc file.\n");
    return -ENOMEM;
}

I'm using this in my kernel module but create_proc_read_entry always 
returns fail, while there's no problem creating proc entries directly 
under /proc.  The kernel source I'm building my kernel module against is 
2.6.25.4.

Any idea?

Thanks
Romu
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