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Old 25th April 2013, 03:33
binpackcz binpackcz is offline
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Default atomic64 on i386 arch

This could be a basic question.
I am using an atomic64_t variable for a counter in a kernel module. This compiled fine on x86_64 machines but not on i386, so included the atomic64_32.h header :

if defined(__i386__)
#include <asm/atomic64_32.h>

This is helping to get the module compiled but fails to load the module saying the atomic64_* symbols are not found?
Unknown symbol atomic64_inc
Unknown symbol atomic64_set

What is the correct way to use atomic64_t types in a kernel module?

I tried looking up the exported kernel symbols and it does not list the atomic64* smbols both on i386 and x86_64 archs
cat /proc/kallsyms | grep atomic64_inc

I guess my basic understanding of kernel symbols and loading is poor. Please refer me to any good documentation if any.
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