Re: [RFC] mm/damon/damo: saving damon sysfs configuration

[SJ Park <sj@kernel.org>]

Hi Liew,

On Fri,  9 Oct 2026 20:08:33 +0800 Liew Rui Yan <aethernet65535@gmail.com> wrote:

[...]
> Yes.  My expected behavior is to completely save and restore the DAMON
> SYSFS configuration, including DAMOS Schemes.  But it cannot done by
> 'damo args damon'.
> 
> In the script I provided, it first apply lru.json and then uses
> 'damo args damon' to export the current configuration file.

'damo args damon' does not export the running DAMON parameters.  Why do you
expect so?  Has some document confused you?

> I expected
> that reapplying this exported configuration (via 'damo start --kdamonds')
> would fully restore the previous DAMON SYSFS setup.

So this expectation is wrong.

> 
> However, the current/unexpected behavior is that it drops the DAMOS
> Schemes configuration entirely.  In other words, I cannot fully save
> and restore the DAMON SYSFS configuration using 'damo args damon'.

So it looks like there is not problem.  Please let me know if I'm missing
something.


Thanks,
SJ

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