Re: [PATCH v4 bpf-next 1/3] bpf: Add kmem_cache iterator

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On 10/2/24 20:09, Namhyung Kim wrote:
> The new "kmem_cache" iterator will traverse the list of slab caches
> and call attached BPF programs for each entry.  It should check the
> argument (ctx.s) if it's NULL before using it.
> 
> Now the iteration grabs the slab_mutex only if it traverse the list and
> releases the mutex when it runs the BPF program.  The kmem_cache entry
> is protected by a refcount during the execution.
> 
> It includes the internal "mm/slab.h" header to access kmem_cache,
> slab_caches and slab_mutex.  Hope it's ok to mm folks.
> 
> Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx> #mm/slab





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