> Ingo, the ksymoops patch adds these to linux/sched.h:
>
> extern void show_trace(unsigned long *stack);
> extern void show_stack(unsigned long *stack);
>
> This is not good. In general, it is not possible to do a reliable
> backtrace with just a stack pointer as a starting point (it is
> necessary to have access to the entire "preserved" machine state
> instead). I'd suggest to either change the argument to a task_struct
> pointer (and update half a dozen platforms or so accordingly), or to
> leave the declarations platform-specific like they were before.
Also the prototypes may differ, e.g. for MIPS/MIPS64 we have:
extern void show_trace(long *stack);
since MIPS addresses are signed and then, for consistency, we have:
extern void show_stack(long *stack);
as well.
-- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/