mmc: block: bonnie++ runs with errors on arc/hsdk board

[Adrian Hunter]

On 15/03/18 19:21, Alexey Brodkin wrote:
> Hi Vineet,
> 
> On Thu, 2018-03-15 at 09:38 -0700, Vineet Gupta wrote:
>> On 03/15/2018 02:27 AM, Adrian Hunter wrote:
>>> Please try:
>>>
>>> 	perf record -a -e mmc:* -- bonnie++ -u root -r 256 -s 512 -x 1 -d /mnt
>>>
>>> and share the resulting perf.data file when you are able
>>> to reproduce the hung task message.
>>>
>>> You may want to add this patch first:
>>>
>>> 	https://marc.info/?l=linux-mmc&m=152110580324200
>>
>> While this SoC has perf counters, Unfortunately the overflow interrupts are not 
>> wired up. We can do perf stats but not sampling.
> 
> I guess here Adrian was asking for pure software MMC-related events which are
> orthogonal to CPU's perf interrupts.
> 
> Adrian?

Yes, these are mmc tracepoints which are software events.  The file is full
of them, so it certainly worked.