Re: sparc - generic clock event support

[Konrad Eisele <konrad@gaisler.com>]

Sam Ravnborg wrote:
> On Thu, Apr 05, 2012 at 08:55:21AM +0200, Konrad Eisele wrote:
>> Sam Ravnborg wrote:
>>> I have now finised revising the patch to
>>> provide support for generic clock event support
>>> on sparc32.
>>>
>>> The main focus has been to extend the core functionality
>>> (within sparc32) to allow us to share a lot of code between
>>> leon and the other platfroms.
>>>
>>> I have in this process updated a few bits here and there.
>>> The patch set is build tested for leon, and
>>> runtime tested on my ss5 (sun4m).
>>
>> I'll test it today on Leon.
>
> Thanks Konrad!
> I hope I did not broke it beyond repair :-)
>
> 	Sam
>
>

I runtime tested your patch. For single-CPU the patch works
fine. For SMP I cannot test because Leon-SMP for 3.x doesnt
work right now, also without your patch. The last version
that I could verify LEON-SMP was 2.6.36, 3.0 should also work,
however there your patches dont apply. I'll have to make
Leon-SMP work with 3.4 first , then I can test the SMP part
of the patch. However I'll write this on my todo list for
after easter. As for Leon-SMP is broken right now I would
vote for that your patches are applied now and after that to
try to fix Leon-SMP.
-- Konrad

------ single cpu -------------
# cd /proc
# cat cpuinfo
cpu             : LEON
fpu             : GRFPU-Lite
promlib         : Version 0 Revision 0
prom            : 0.0
type            : leon
ncpus probed    : 1
ncpus active    : 1
CPU0Bogo        : 201.11
CPU0ClkTck      : 202000
MMU type        : LEON
contexts        : 256
nocache total   : 3145728
nocache used    : 114432
# cat timer_list
Timer List Version: v0.6
HRTIMER_MAX_CLOCK_BASES: 3
now at 21370769625 nsecs

cpu: 0
  clock 0:
   .base:       f03c1750
   .index:      0
   .resolution: 10000000 nsecs
   .get_time:   ktime_get
active timers:
  clock 1:
   .base:       f03c1788
   .index:      1
   .resolution: 10000000 nsecs
   .get_time:   ktime_get_real
active timers:
  clock 2:
   .base:       f03c17c0
   .index:      2
   .resolution: 10000000 nsecs
   .get_time:   ktime_get_boottime
active timers:


Tick Device: mode:     0
Per CPU device: 0
Clock Event Device: timer_ce
  max_delta_ns:   0
  min_delta_ns:   0
  mult:           4294967
  shift:          32
  mode:           2
  next_event:     2147483646999999999 nsecs
  set_next_event: <00000000>
  set_mode:       timer_ce_set_mode
  event_handler:  tick_handle_periodic
  retries:        0

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