Re: [patch v2] lib: test_vmstat: add synthetic benchmark for vm stats

On Sun, 2 Aug 2026, David Rientjes wrote:

> From: Christoph Lameter <[email protected]>
> 
> Add a synthetic benchmark that can be used to measure performance of VM
> statistics.  This is used to analyze any improvements or regressions in
> functions that are frequently used in hot code paths.
> 
> The test is run by inserting the module: modprobe test_vmstat
> The module insertion will always fail so that it is automatically
> unloaded; the results are in the kernel log.
> 
> Signed-off-by: Christoph Lameter <[email protected]>
> Signed-off-by: David Rientjes <[email protected]>
> ---
>  v2:
>   - added bash wrapper to ksft per David
>   - integrated into ksft
>   - added MAINTAINERS entry per David
>   - fixed alloc_page() error code per Usama
> 
>  Adding single test for now to solicit feedback before updating the other
>  two.
> 

Any feedback for this one?  If this one looks good then I can also apply 
the same treatment for test_pagealloc and test_slab.