Richard Henderson <rth@twiddle.net> writes:
> > OTOH, the value is used only by Alt-SysRq-T, so... Hell knows.
>
> No, it's also used by 'ps -l'. See wchan.
ps -l uses get_wchan() (an architecture specific function from
arch/*/kernel/process.c) to get the return address from
schedule(). And now thread_saved_pc() seems to do the same (at least
on x86). Is there any reason to have two architecture specific
functions doing the same or do I miss something?
Jean
PS: Architectures other then x86 use thread_saved_pc() to implement
get_wchan(). If the debug output of Alt-SysRq-T is supposed to show
the waiting channel we should use get_wchan() instead of thread_saved_pc().
-- I get up each morning, gather my wits. Pick up the paper, read the obits. if I'm not there I know I'm not dead. So I eat a good breakfast and go back to bed. Peete Seeger - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Nov 15 2000 - 21:00:25 EST