* Tony Luck <tony.luck@xxxxxxxxx> wrote: > The stack_not_used() function in <linux/sched.h> assumes that stacks > grow downwards. This is not true on IA64 or PARISC, so this function > would walk off in the wrong direction and into the weeds. > > Found on IA64 because of a compilation failure with recursive dependencies > on IA64_TASKSIZE and IA64_THREAD_INFO_SIZE. > > Fixing the code is possible, but should be combined with other > infrastructure additions to set up the "canary" at the end of the stack. > > Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx> (failed allmodconfig build) > Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx> > --- > lib/Kconfig.debug | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index ff5bdee..4a18650 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -714,7 +714,7 @@ config STACKTRACE > > config DEBUG_STACK_USAGE > bool "Stack utilization instrumentation" > - depends on DEBUG_KERNEL > + depends on DEBUG_KERNEL && !IA64 && !PARISC The modern way of doing this is by adding an ARCH_SUPPORTS_ flag. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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