From: Steven Smith <sos22@cam.ac.uk>
To: "Joseph D. Wagner" <wagnerjd@prodigy.net>
Cc: Linux Newbie <linux-newbie@vger.kernel.org>
Subject: Re: INFO REQ: Clarification of Memory Management
Date: Sat, 7 Dec 2002 12:41:47 +0000 [thread overview]
Message-ID: <20021207124147.GA577@cam.ac.uk> (raw)
In-Reply-To: <000101c29d67$f50ce310$670b3941@joe>
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> Does the __get_free_pages() function eventually call the kmalloc() function?
> Or does the kmalloc() function eventually call the __get_free_pages()
> function? Or are these two totally separate functions for different
> purposes?
kmalloc() will eventually call get_free_pages(), but you really
shouldn't ever need to know that, unless you're fiddling with the
implementations of either function.
Note that, even though kmalloc() uses get_free_pages() to allocate
memory, it performs various other bookkeeping tasks, and so the two
types of memory allocations really can't be mixed.
> Which of these functions can be called by user process for the purpose of
> allocating memory for that user process?
Neither; use malloc() in userspace. (Or the new operator if you're using
C++)
Steven Smith,
sos22@cam.ac.uk.
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next prev parent reply other threads:[~2002-12-07 12:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-06 20:42 INFO REQ: Clarification of Memory Management Joseph D. Wagner
2002-12-07 12:41 ` Steven Smith [this message]
2002-12-07 12:58 ` Ken Moffat
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