linux-ext4 - Re: mmc: block: bonnie++ runs with errors on arc/hsdk board

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Date:   Fri, 16 Mar 2018 09:20:35 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Vineet Gupta <Vineet.Gupta1@...opsys.com>
Cc:     "jh80.chung@...sung.com" <jh80.chung@...sung.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>,
        "Eugeniy.Paltsev@...opsys.com" <Eugeniy.Paltsev@...opsys.com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "vincent.weaver@...ne.edu" <vincent.weaver@...ne.edu>,
        "Evgeniy.Didin@...opsys.com" <Evgeniy.Didin@...opsys.com>,
        "ulf.hansson@...aro.org" <ulf.hansson@...aro.org>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        "tytso@....edu" <tytso@....edu>
Subject: Re: mmc: block: bonnie++ runs with errors on arc/hsdk board

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.