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

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Date:   Thu, 15 Mar 2018 17:21:49 +0000
From:   Alexey Brodkin <Alexey.Brodkin@...opsys.com>
To:     Vineet Gupta <Vineet.Gupta1@...opsys.com>,
        "adrian.hunter@...el.com" <adrian.hunter@...el.com>
CC:     "jh80.chung@...sung.com" <jh80.chung@...sung.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Alexey.Brodkin@...opsys.com" <Alexey.Brodkin@...opsys.com>,
        "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

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?

-Alexey