[PATCH 2/3] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane.

[Michael Ellerman]

On Wed, 2007-07-04 at 14:04 +1000, Tony Breeds wrote:
> When booting a current kernel with CONFIG_PRINTK_TIME enabled you'll
> see messages like:
> 
> [    0.000000] time_init: decrementer frequency = 188.044000 MHz
> [    0.000000] time_init: processor frequency   = 1504.352000 MHz
> [3712914.436297] Console: colour dummy device 80x25
> 
> This cause by the initialisation of tb_to_ns_scale in time_init(), suddenly the
> multiplication in sched_clock() now does something :).  This patch modifies
> sched_clock() to report the offset since the machine booted so the same
> printk's now look like:
> 
> [    0.000000] time_init: decrementer frequency = 188.044000 MHz
> [    0.000000] time_init: processor frequency   = 1504.352000 MHz
> [    0.000135] Console: colour dummy device 80x25
> 
> Effectivly including the uptime in printk()s.

Is this what other archs do?

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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