Messages in this thread | | | Date | Wed, 05 Mar 2008 14:09:04 +0100 | From | Eric Dumazet <> | Subject | [RFC] is CONFIG_DEBUG_STACK_USAGE supported on STACK_GROWSUP arches ? |
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Hi Kyle
I was wondering how following code could work on PARISC :
kernel/sched.c
#ifdef CONFIG_DEBUG_STACK_USAGE { unsigned long *n = end_of_stack(p); while (!*n) n++; free = (unsigned long)n - (unsigned long)end_of_stack(p); } #endif
I am trying to define a bytes_free_in_stack() function, and was about to code something like :
/* * Only called in process context */ static inline unsigned long bytes_free_in_stack() { #ifdef CONFIG_STACK_GROWSUP unsigned long free = (unsigned long)end_of_stack(current) - (unsigned long)&free; #else unsigned long free = (unsigned long)&free - (unsigned long)end_of_stack(current); #endif return free; }
but I realize it wont work on PARISC (and more generally on STACK_GROWSUP arches)
Thank you Eric
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