[RFC 1/2] eal: add llc aware functions

[Bruce Richardson]

On Tue, Sep 03, 2024 at 05:54:22PM +0000, Wathsala Wathawana Vithanage wrote:
> > 	 Some SOCs may only show upper-level caches here, therefore cannot
> > be use blindly without knowing the SOC.
> > 
> > Can you please help us understand
> > 
> 
> For instance, in Neoverse N1 can disable the use of SLC as LLC (a BIOS setting)
> If SLC is not used as LLC, then your script would report the unified L2 as an LLC.
> I don't think that's what you are interested in.
> 
> > 1. if there are specific SoC which do not populate the information at all? If yes
> > are they in DTS?
> 
> This information is populated correctly for all SOCs, comment was on the script.
> 
Given all the complexities around topologies, do we want this covered by
DPDK at all? Are we better to just recommend, to any applications that
need it, that they get the info straight from the kernel via sysfs? Why
have DPDK play the middle-man here, proxying the info from sysfs to the
app?

/Bruce