It is defined in generic yes. From discussions on IRC, the issue may
be related to something else. I will do further testing to see whether
or not this is correct. Should take me another week or so...

I still have no idea why in 17.01 CONIG_SCHED_HRTICK is defined in
generic and in a bunch of architectures whereas it;'s only defined in
trunk in generic.

On Mon, Jan 15, 2018 at 1:20 PM, Mathias Kresin <d...@kresin.me> wrote:
> 15.01.2018 21:09, Rosen Penev:
>>
>> Fixes FS #1242.
>>
>> The way I figured this out was by using diff on config-4.4 from 17.01
>> and config-4.9 from trunk. First I removed CONFIG options. That did not
>> work.
>> Then I started adding. This one seems to do the trick.
>>
>> The issue is that anything in /dev/sdX starts returning bad data when
>> read.
>> PCIe or USB does not matter. I have not tested NVME since I lack the
>> hardware.
>> /dev/mtdblockX may or may not be impacted. No idea.
>>
>> Signed-off-by: Rosen Penev <ros...@gmail.com>
>> ---
>>   target/linux/ramips/mt7621/config-4.9 | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/target/linux/ramips/mt7621/config-4.9
>> b/target/linux/ramips/mt7621/config-4.9
>> index f9765ed..0ea6798 100644
>> --- a/target/linux/ramips/mt7621/config-4.9
>> +++ b/target/linux/ramips/mt7621/config-4.9
>> @@ -233,6 +233,7 @@ CONFIG_RTC_CLASS=y
>>   CONFIG_RTC_DRV_PCF8563=y
>>   CONFIG_RTC_I2C_AND_SPI=y
>>   CONFIG_RTC_MC146818_LIB=y
>> +CONFIG_SCHED_HRTICK=y
>>   # CONFIG_SCHED_INFO is not set
>>   CONFIG_SCHED_SMT=y
>>   # CONFIG_SCSI_DMA is not set
>
>
> What ever the root cause of your issue is, it isn't CONFIG_SCHED_HRTICK
> since it is already enabled for mt7621:
>
> $ git grep CONFIG_SCHED_HRTICK
> target/linux/gemini/config-4.4:# CONFIG_SCHED_HRTICK is not set
> target/linux/generic/config-4.14:CONFIG_SCHED_HRTICK=y
> target/linux/generic/config-4.4:CONFIG_SCHED_HRTICK=y
> target/linux/generic/config-4.9:CONFIG_SCHED_HRTICK=y
> target/linux/mcs814x/config-3.18:# CONFIG_SCHED_HRTICK is not set
> target/linux/omap24xx/config-4.1:CONFIG_SCHED_HRTICK=y
> target/linux/ppc40x/config-3.18:CONFIG_SCHED_HRTICK=y
> target/linux/ppc44x/config-3.18:CONFIG_SCHED_HRTICK=y
> target/linux/rb532/config-4.9:# CONFIG_SCHED_HRTICK is not set
>
> For further patches, please explain in the commit message why the change
> fixes the issue and move the not commit message related text below the tear
> line.
>
> Mathias

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