s390/numa: write kernel message when emu_size has been increased

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c
index 30b2698a28e2..828d0695d0d4 100644
--- a/arch/s390/numa/mode_emu.c
+++ b/arch/s390/numa/mode_emu.c
@@ -436,9 +436,15 @@ static void emu_update_cpu_topology(void)
  */
 static unsigned long emu_setup_size_adjust(unsigned long size)
 {
+        unsigned long size_new;
+
         size = size ? : CONFIG_EMU_SIZE;
-        size = roundup(size, memory_block_size_bytes());
-        return size;
+        size_new = roundup(size, memory_block_size_bytes());
+        if (size_new == size)
+                return size;
+        pr_warn("Increasing memory stripe size from %ld MB to %ld MB\n",
+                size >> 20, size_new >> 20);
+        return size_new;
 }
 
 /*