On 03/02/2012 06:31 AM, Robert Richter wrote:
On 23.02.12 17:25:11, Robert Richter wrote:
> On 23.02.12 10:12:35, Will Deacon wrote:
>> On Thu, Feb 23, 2012 at 04:08:23AM +0000, William Cohen wrote:
>>> I was looking to see why the arm kernel builds for fedora 17 were failing
with:
>>>
>>> arch/arm/oprofile/../../../drivers/oprofile/oprofile_perf.c:28:28: error:
variably modified 'perf_events' at file scope
>>>
>>> The error points to the following line in oprofile_perf.c:
>>>
>>> static struct perf_event **perf_events[nr_cpumask_bits];
>
>> That or use NR_CPUS instead (which will be the same as nr_cpu_ids on ARM).
>
> William,
>
> the patch below uses per-cpu macros and should probably fix the
> above. But it's *compile tested only*.
William,
could you give this patch a try? I would like to remove the cpu array
implementation and change the code to use the cpu framework.
Please, send me also your config for further testing.
Many thanks,
-Robert
Hi Robert,
The patch isn't going to work in its current state. kcalloc to kzalloc and have
different number of arguments.
static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
static inline void *kzalloc(size_t size, gfp_t flags)
I think I have an idea why the performance monitoring isn't working on the tegra based
trimslice I have. It looks like the pmu hardware is never registered.
https://bugzilla.redhat.com/show_bug.cgi?id=741325#c23
I am trying to get a kernel that has working pmu support then try testing the suggested
patch.
-Will