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

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

[akpm]

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@linux.ibm.com>
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@linux.ibm.com
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Nathan Lynch <nathanl@linux.ibm.com>
Cc: Scott Cheloha <cheloha@linux.ibm.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@linux.ibm.com are

mm-memory_hotplug-quieting-offline-operation.patch

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

[David Hildenbrand]

> Am 11.12.2020 um 20:26 schrieb akpm@linux-foundation.org:
> 
> 
> 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@linux.ibm.com>
> 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@linux.ibm.com
> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
> Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
> Cc: Nathan Lynch <nathanl@linux.ibm.com>
> Cc: Scott Cheloha <cheloha@linux.ibm.com>
> Cc: David Hildenbrand <david@redhat.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> ---
> 

Useful for virtio-mem as well.

Reviewed-by: David Hildenbrand <david@redhat.com>

> 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@linux.ibm.com are
> 
> mm-memory_hotplug-quieting-offline-operation.patch
>