Messages in this thread | | | From | (Richard Henderson) | Subject | Re: Jiffies Wraparound (was Re: interrupt counts) | Date | Wed, 21 Aug 1996 13:49:48 -0500 (CDT) |
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> IMHO, we either should forget about it and wait for Merced or anything > else to move us out of the 32 bit world ... or we should completely avoid > comparing "jiffies" to variables. We could do this the following way: > > #define IS_TIMED_OUT(timeout) (jiffies>timeout) || \ > (timeout-jiffies>MAX_JIFFIES/2)
Just rewriting tests from
timeout = jiffies + delay; while (jifies < timeout) continue;
to
start = jiffies; while (jiffies - start < delay) continue;
solves the problem, and is much faster.
r~
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