Re: + mm-memory_hotplug-quieting-offline-operation.patch added to -mm tree

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> Am 11.12.2020 um 20:26 schrieb akpm@xxxxxxxxxxxxxxxxxxxx:
> 
> 
> The patch titled
>     Subject: mm/memory_hotplug: quieting offline operation
> has been added to the -mm tree.  Its filename is
>     mm-memory_hotplug-quieting-offline-operation.patch
> 
> This patch should soon appear at
>    https://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-quieting-offline-operation.patch
> and later at
>    https://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-quieting-offline-operation.patch
> 
> Before you just go and hit "reply", please:
>   a) Consider who else should be cc'ed
>   b) Prefer to cc a suitable mailing list as well
>   c) Ideally: find the original patch on the mailing list and do a
>      reply-to-all to that, adding suitable additional cc's
> 
> *** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
> 
> The -mm tree is included into linux-next and is updated
> there every 3-4 working days
> 
> ------------------------------------------------------
> From: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
> Subject: mm/memory_hotplug: quieting offline operation
> 
> On PowerPC, when dymically removing memory from a system we can see in the
> console a lot of messages like this:
> 
> [  186.575389] Offlined Pages 4096
> 
> This message is displayed on each LMB (256MB) removed, which means that we
> removing 1TB of memory, this message is displayed 4096 times.
> 
> Moving it to DEBUG to not flood the console.
> 
> Link: https://lkml.kernel.org/r/20201211150157.91399-1-ldufour@xxxxxxxxxxxxx
> Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Nathan Lynch <nathanl@xxxxxxxxxxxxx>
> Cc: Scott Cheloha <cheloha@xxxxxxxxxxxxx>
> Cc: David Hildenbrand <david@xxxxxxxxxx>
> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> ---
> 

Useful for virtio-mem as well.

Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

> mm/memory_hotplug.c |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/mm/memory_hotplug.c~mm-memory_hotplug-quieting-offline-operation
> +++ a/mm/memory_hotplug.c
> @@ -1569,7 +1569,7 @@ int __ref offline_pages(unsigned long st
> 
>    /* Mark all sections offline and remove free pages from the buddy. */
>    __offline_isolated_pages(start_pfn, end_pfn);
> -    pr_info("Offlined Pages %ld\n", nr_pages);
> +    pr_debug("Offlined Pages %ld\n", nr_pages);
> 
>    /*
>     * The memory sections are marked offline, and the pageblock flags
> _
> 
> Patches currently in -mm which might be from ldufour@xxxxxxxxxxxxx are
> 
> mm-memory_hotplug-quieting-offline-operation.patch
> 





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