[PATCH] octeontx: add linux 5.10 testing kernel support

Daniel Danzberger daniel at dd-wrt.com
Fri Sep 3 06:08:24 PDT 2021


> 
> [snipped]
> 
> > +CONFIG_EXT4_FS=y
> > +CONFIG_EXT4_FS_POSIX_ACL=y
> > +CONFIG_F2FS_FS=y
> > +CONFIG_FANOTIFY=y
> > +CONFIG_FAT_FS=y
> 
> Do all of these filesystems have to be built-in? We have config
> options for them.

I don't think so.
I took the kernel 5.4 config as a template, because I didn't want to
break things for others when upgrading to 5.10.
But I agree, there is no reason for a default buil-in.
> 
> [snipped]
> 
> > +CONFIG_HZ=250
> 
> Why 250 Hz? Does the 100 Hz all other targets use cause any
> measurable
> increase in latency?
> [snipped]
I did not notice this changed. The config I made for 5.10 was before
your commit 3326b5e75c277b4fac21bffd2085df4aa40d2775 which changed the
default frequency to 100 Hz.
There should be no issue with 100 Hz on octecontx, but I will confirm
this with new builds on my test devices.

> 
> > +CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
> 
> CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y might not be a performance win,
> especially with only 1 GiB of RAM. Should be measured, otherwise
> MADVISE should be selected instead.
Same here, it was selected in the 5.4 kernel config and I have only run
tested with this option so far.
Let me do some benchmarking with MADVISE before we continue here ...
> 
> Best regards,
> Rui
> 

-- 
Regards

Daniel Danzberger
embeDD GmbH, Alter Postplatz 2, CH-6370 Stans




More information about the openwrt-devel mailing list