This is a note to let you know that I've just added the patch titled
powerpc/pseries/memhotplug: Quieten some DLPAR operations
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-pseries-memhotplug-quieten-some-dlpar-operat.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1a9f6aba6703acd13c932ee58944004135cfe986
Author: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
Date: Fri Dec 11 15:59:54 2020 +0100
powerpc/pseries/memhotplug: Quieten some DLPAR operations
[ Upstream commit 20e9de85edae3a5866f29b6cce87c9ec66d62a1b ]
When attempting to remove by index a set of LMBs a lot of messages are
displayed on the console, even when everything goes fine:
pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 8000002d
Offlined Pages 4096
pseries-hotplug-mem: Memory at 2d0000000 was hot-removed
The 2 messages prefixed by "pseries-hotplug-mem" are not really
helpful for the end user, they should be debug outputs.
In case of error, because some of the LMB's pages couldn't be
offlined, the following is displayed on the console:
pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 8000003e
pseries-hotplug-mem: Failed to hot-remove memory at 3e0000000
dlpar: Could not handle DLPAR request "memory remove index 0x8000003e"
Again, the 2 messages prefixed by "pseries-hotplug-mem" are useless,
and the generic DLPAR prefixed message should be enough.
These 2 first changes are mainly triggered by the changes introduced
in drmgr:
https://groups.google.com/g/powerpc-utils-devel/c/Y6ef4NB3EzM/m/9cu5JHRxAQAJ
Also, when adding a bunch of LMBs, a message is displayed in the console per LMB
like these ones:
pseries-hotplug-mem: Memory at 7e0000000 (drc index 8000007e) was hot-added
pseries-hotplug-mem: Memory at 7f0000000 (drc index 8000007f) was hot-added
pseries-hotplug-mem: Memory at 800000000 (drc index 80000080) was hot-added
pseries-hotplug-mem: Memory at 810000000 (drc index 80000081) was hot-added
When adding 1TB of memory and LMB size is 256MB, this leads to 4096
messages to be displayed on the console. These messages are not really
helpful for the end user, so moving them to the DEBUG level.
Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
[mpe: Tweak change log wording]
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201211145954.90143-1-ldufour@xxxxxxxxxxxxx
Stable-dep-of: bd68ffce69f6 ("powerpc/pseries/memhp: Fix access beyond end of drmem array")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index f364909d0c08..03fb4669a1f0 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -496,7 +496,7 @@ static int dlpar_memory_remove_by_index(u32 drc_index)
int lmb_found;
int rc;
- pr_info("Attempting to hot-remove LMB, drc index %x\n", drc_index);
+ pr_debug("Attempting to hot-remove LMB, drc index %x\n", drc_index);
lmb_found = 0;
for_each_drmem_lmb(lmb) {
@@ -514,10 +514,10 @@ static int dlpar_memory_remove_by_index(u32 drc_index)
rc = -EINVAL;
if (rc)
- pr_info("Failed to hot-remove memory at %llx\n",
- lmb->base_addr);
+ pr_debug("Failed to hot-remove memory at %llx\n",
+ lmb->base_addr);
else
- pr_info("Memory at %llx was hot-removed\n", lmb->base_addr);
+ pr_debug("Memory at %llx was hot-removed\n", lmb->base_addr);
return rc;
}
@@ -770,8 +770,8 @@ static int dlpar_memory_add_by_count(u32 lmbs_to_add)
if (!drmem_lmb_reserved(lmb))
continue;
- pr_info("Memory at %llx (drc index %x) was hot-added\n",
- lmb->base_addr, lmb->drc_index);
+ pr_debug("Memory at %llx (drc index %x) was hot-added\n",
+ lmb->base_addr, lmb->drc_index);
drmem_remove_lmb_reservation(lmb);
}
rc = 0;
