[PATCH v8 04/23] slab: add sheaf support for batching kfree_rcu() operations

[Jon Hunter]

On 27/11/2025 12:48, Harry Yoo wrote:

...

>>> I have been looking into a regression for Linux v6.18-rc where time taken to
>>> run some internal graphics tests on our Tegra234 device has increased from
>>> around 35% causing the tests to timeout. Bisect is pointing to this commit
>>> and I also see we have CONFIG_KVFREE_RCU_BATCHED=y.
>>
>> Thanks for reporting! Uh, this has been put aside while I was busy working
>> on other stuff... but now that we have two people complaining about this,
>> I'll allocate some time to investigate and improve it.
>>
>> It'll take some time though :)
> 
> By the way, how many CPUs do you have on your system, and does your
> kernel have CONFIG_CODE_TAGGING enabled?

For this device there are 12 CPUs. I don't see CONFIG_CODE_TAGGING enabled.

Thanks
Jon

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nvpublic