From: cranium2003 <cranium2003@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: kmalloc usage question
Date: Sat, 8 Jan 2005 01:17:28 -0800 (PST) [thread overview]
Message-ID: <20050108091728.315.qmail@web41404.mail.yahoo.com> (raw)
Hello,
I read kmalloc kernel-api.pdf page and found that
* %GFP_USER - Allocate memory on behalf of user. May
sleep.
*
* %GFP_KERNEL - Allocate normal kernel ram. May
sleep.
*
* %GFP_ATOMIC - Allocation will not sleep. Use
inside interrupt handlers.
What i want to know if i write a Device driver that
has kmalloc statements require allocate some string
variable then which flag i should use?
As apis said GFP_USER. But if i want my kernel module
to be require to work in kernel always then can it be
ok to use GFP_KERNEL??
What are then disadvantages to that???
regards,
cranium
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reply other threads:[~2005-01-08 10:34 UTC|newest]
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