Messages in this thread | | | Date | Wed, 12 May 2004 16:44:41 -0400 | From | Jeff Garzik <> | Subject | Re: MSEC_TO_JIFFIES is messed up... |
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Andrew Morton wrote: > Jeff Garzik <jgarzik@pobox.com> wrote: > >>>How about we do: >> >> > >> > #if HZ=1000 >> > #define MSEC_TO_JIFFIES(msec) (msec) >> > #define JIFFIES_TO_MESC(jiffies) (jiffies) >> > #elif HZ=100 >> > #define MSEC_TO_JIFFIES(msec) (msec * 10) >> > #define JIFFIES_TO_MESC(jiffies) (jiffies / 10) >> > #else >> > #define MSEC_TO_JIFFIES(msec) ((HZ * (msec) + 999) / 1000) >> > #define JIFFIES_TO_MSEC(jiffies) ... >> > #endif >> > >> > in some kernel-wide header then kill off all the private implementations? >> >> >> include/linux/time.h. One of the SCTP people already did this, but I >> suppose it's straightforward to reproduce. > > > OK, I'll do it.
Thanks. 'grep -i msec.*jif' and 'grep -i jif.*msec' should catch most, there are occurences in both upper and lower case.
Note that a few oddball drivers include an addition to the kernel-wide 'jiffies' variable, rather than just doing a calculation scaling against HZ.
Jeff
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