On May 26, 2015, at 1:47 AM, Catalin Marinas wrote: > On 25 May 2015, at 13:01, Jungseok Lee <jungseokle...@gmail.com> wrote: > >>> Could the stack size be reduced to 8KB perhaps? >> >> I guess probably not. >> >> A commit, 845ad05e, says that 8KB is not enough to cover SpecWeb benchmark. > > We could go back to 8KB stacks if we implement support for separate IRQ > stack on arm64. It's not too complicated, we would have to use SP0 for > (kernel) threads > and SP1 for IRQ handlers.
Definitely interesting. It looks like there are two options based on discussion. 1) Reduce the stack size with separate IRQ stack scheme 2) Figure out a generic anti-fragmentation solution Do I miss anything? I am still not sure about the first scheme as reviewing Minchan's findings repeatedly, but I agree that the item should be worked actively. Best Regards Jungseok Lee-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
