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mm/memory_hotplug.c: change normal message to use pr_debug

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During early boot-up, iomem_resource is set up from the boot descriptor
table, such as EFI Memory Table and e820.  Later,
acpi_memory_device_add() calls add_memory() for each ACPI memory device
object as it enumerates ACPI namespace.  This add_memory() call is
expected to fail in register_memory_resource() at boot since
iomem_resource has been set up from EFI/e820.  As a result, add_memory()
returns -EEXIST, which acpi_memory_device_add() handles as the normal
case.

This scheme works fine, but the following error message is logged for
every ACPI memory device object during boot-up.

  "System RAM resource %pR cannot be added\n"

This patch changes register_memory_resource() to use pr_debug() for the
message as it shows up under the normal case.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Toshi Kani 2013-07-03 15:02:39 -07:00 committed by Linus Torvalds
parent f15bdfa802
commit 4996eed867
1 changed files with 1 additions and 1 deletions
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2
mm/memory_hotplug.c
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@ -75,7 +75,7 @@ static struct resource *register_memory_resource(u64 start, u64 size)
res->end = start + size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, res) < 0) {
printk("System RAM resource %pR cannot be added\n", res);
pr_debug("System RAM resource %pR cannot be added\n", res);
kfree(res);
res = NULL;
}