On Thu, 19 Aug 1999, liwei wrote:
> Who can tell me where is the kernel function 'idle()' in Linux 2.2.x ?
> Thanks a lot.
That's worse - hang on!
You are seeing idle() in init/main.c. This is actually a kernel call
defined as a macro in include/linux/unistd.h -> include/asm/unistd.h.
The call emerges in kernel space in (assuming i386 arch)
arch/i386/kernel/entry.S and is mapped to the name 'sys_idle' defined in
arch/i386/kernel/process.c.
This function calls 'cpu_idle' also defined in arch/i386/kernel/process.c.
The non SMP 'cpu_idle' is static so it should not be confused with the
other 'cpu_idle' function found in init/main.c which is global... Oh! It's
also SMP dependent!
You figure it out - I'm way too tired!
Robin.
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