Why doesn't memchr appear in ksyms?

Why doesn't memchr appear in ksyms?

[Tom Dickson]

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According to
http://kernelnewbies.org/documents/kdoc/kernel-api/r1708.html I should
be able to use memchr in a module, however, when I try to load the
module insmod complains that memchr is not available; a grep memchr
/proc/ksyms shows that it doesn't exist.

Is there some special kernel option I have to set to enable it? memcpy
and other mem* externs are there.

Thank you (for answering a simple question)

Kernel 2.4.26 on a Pentium 3 system

- -Tom
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Re: Why doesn't memchr appear in ksyms?

[Randy.Dunlap]

On Thu, 30 Sep 2004 08:54:13 -0700 Tom Dickson wrote:

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| Hash: SHA1
| 
| According to
| http://kernelnewbies.org/documents/kdoc/kernel-api/r1708.html I should
| be able to use memchr in a module, however, when I try to load the
| module insmod complains that memchr is not available; a grep memchr
| /proc/ksyms shows that it doesn't exist.
| 
| Is there some special kernel option I have to set to enable it? memcpy
| and other mem* externs are there.
| 
| Thank you (for answering a simple question)
| 
| Kernel 2.4.26 on a Pentium 3 system

memchr() is compiled/built inline, not as an exported function.

If it's not working for you, maybe you aren't building with "-O2"
(gcc optimization level 2), which is needed for kernel builds.


--
~Randy
MOTD:  Always include version info.
(Again.  Sometimes I think ln -s /usr/src/linux/.config .signature)