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

[Evgeniy Didin]

Hi Adrian,

> On 14/03/18 14:32, Evgeniy Didin wrote:
> > Hi Adrian,
> > > > 
> > > > Was the performance affected? i.e. the results from bonnie++
> > > 
> > > I have run bonnie++ several times before and after mentioned commit. Here is output:
> > > --------------------------------------------------<8-------------------------------------------------------------------------
> > > Before commit:
> > > ARCLinux,512M,6442,50,7211,0,5333,0,12954,99,345638,100,+++++,+++,16,22322,100,+++++,+++,32735,99,22921,100,+++++,+++,32211,100
> > > ARCLinux,512M,6611,51,7248,0,5162,0,12951,99,344763,99,+++++,+++,16,22649,99,+++++,+++,32723,99,22572,100,+++++,+++,31697,100
> > > ARCLinux,512M,6597,52,7307,0,5368,0,12934,99,343987,99,+++++,+++,16,22775,100,+++++,+++,32713,99,22832,100,+++++,+++,31899,99
> > > After commit:
> > > ARCLinux,512M,4453,36,6474,1,5852,0,12940,99,344329,100,+++++,+++,16,22168,98,+++++,+++,32760,99,22755,100,+++++,+++,32205,100
> > > ARCLinux,512M,5159,42,6944,1,5658,0,12945,99,344290,100,+++++,+++,16,22295,100,+++++,+++,32715,99,22888,99,+++++,+++,32007,99
> > > ARCLinux,512M,5170,42,6840,2,5315,0,12946,99,343889,100,+++++,+++,16,22445,100,+++++,+++,32681,99,22967,100,+++++,+++,32117,99
> > > --------------------------------------------------<8------------------------------------------------------------------------
> > >               ^^^^ 
> > > If i understand correctly, in third column is shown "sequential output" per character speed (K/sec), which decreased.
> > > 
> > > > What mount options did you use?
> > > 
> > > I didn't use any options. Simply:
> > > # mount /dev/mmcblk0p1 /mnt
> > 
> > Note that the file system on SDcard was ext4. 
> 
> 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.
> 

I have applied the patch below and collected perf.data using command above, hung message also appeared. Is this the information you needed?
(perf.data is in attachments to this
message).
 
> You may want to add this patch first:
> 
> 	https://urldefense.proofpoint.com/v2/url?u=https-3A__marc.info_-3Fl-3Dlinux-2Dmmc-26m-3D152110580324200&d=DwIDaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=vQk-RIbjwN0zvlwiMSpq3LYUTNf7Gqc4
> ujhosYITtAw&m=LeVFmgzU0ydw-qHaAVh-kZI-v4mldnCycYxIGxqDexU&s=SyGvsVJBOzegO2Mz3hQ5j6CY8KrjLWJERVHfosSmKSs&e=

Best regards,
Evgeniy Didin
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