> FWIW, slab.c has a "struct array_cache *new[NR_CPUS]" on the > stack. I don't think so. That line is part of the "struct ccupdate_struct" definition. We only declare a pointer to one of those on the stack. > Also, net/core/utils.c has "unsigned long seed[NR_CPUS]". I don't see this one either (in Linus 2.6.21-rc5). Looking at the history Suresh Siddha zapped it last August specifically because of worries about stack overflow on 1024 cpu systems. I do see: kernel/sched.c: int ints[NR_CPUS], i; > I'm only adding 1/4 as much space. Can I get away with it or > should I allocate a node-local chunk of memory & keep a pointer to > it in per-cpu data? Debugging kernel stack overflow is no fun at all, so you might want to take the better-safe-than-sorry approach here. -Tony - 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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