From: Timur Tabi <timur@freescale.com>
To: linuxppc-dev <linuxppc-dev@ozlabs.org>
Subject: Confused about CLOCK_TICK_RATE
Date: Thu, 12 Mar 2009 14:01:00 -0500 [thread overview]
Message-ID: <49B95BEC.2010404@freescale.com> (raw)
Can someone explain CLOCK_TICK_RATE to me? It's defined in
arch/powerpc/include/asm/timex.h as such:
#define CLOCK_TICK_RATE 1024000 /* Underlying HZ */
Every architecture defines this, but some use the better comment
"Underlying frequency of the HZ timer".
My question is: why is this a constant? Shouldn't it be a variable,
perhaps something that is based on tb_ticks_per_usec?
--
Timur Tabi
Linux kernel developer at Freescale
next reply other threads:[~2009-03-12 19:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 19:01 Timur Tabi [this message]
2009-03-18 18:34 ` Confused about CLOCK_TICK_RATE Scott Wood
2009-03-19 2:48 ` Paul Mackerras
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