lkml.org 
[lkml]   [2004]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: MSEC_TO_JIFFIES is messed up...
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



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:03    [W:0.059 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site