Re: [RFC patch 04/15] get_cycles() : powerpc64 HAVE_GET_CYCLES (update)

David Miller
2008-10-17T02:33:34Z

From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Thu, 16 Oct 2008 22:08:13 -0400

> * David Miller (davem@davemloft.net) wrote:
> > Date: Thu, 16 Oct 2008 20:43:28 -0400
> >
> > You'll need to make a similar fix on sparc64.
>
> I guess you are talking about using sparc64_get_clock_tick rather than
> CLOCK_TICK_RATE ? I assume sparc64_get_clock_tick() done on any CPU will
> return the same rate ?

You'll need to use tb_ticks_per_usec or similar.

The ->get_tick() thing you are using uses a TICK source which is
synchronized across the entire system and advances at a non-changing
rate.

sparc64_get_clock_tick() returns something different.