Messages in this thread | | | Date | Wed, 31 Mar 1999 12:10:32 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: [patch] __volatile__ needed in get_cycles()? |
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On Wed, 31 Mar 1999, Ingo Molnar wrote:
>(and as i told you in the previous mail, even instruction prefetch and >page table access is properly synchronized in Linux, because we use invlpg >and iret)
I am not talking about bugs, I am simply talking about precise profiling of the asm between two get_cycles_serialized(). Note, I always thought from time zero that get_cycles_serialized() is not needed at all for production code, but Tigran asked for an additional get_cycles() that would take care of reordering issues and since it looked fun I implemented it :).
Andrea[s] Arcangeli
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