s390/mem_detect: add info source debug print
Print mem_detect info source when memblock=debug is specified.
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index fdf9bd9..36fb37d 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -748,11 +748,28 @@ static void __init memblock_physmem_add(phys_addr_t start, phys_addr_t size)
memblock_add_range(&memblock.physmem, start, size, 0, 0);
}
+static const char * __init get_mem_info_source(void)
+{
+ switch (mem_detect.info_source) {
+ case MEM_DETECT_SCLP_STOR_INFO:
+ return "sclp storage info";
+ case MEM_DETECT_DIAG260:
+ return "diag260";
+ case MEM_DETECT_SCLP_READ_INFO:
+ return "sclp read info";
+ case MEM_DETECT_BIN_SEARCH:
+ return "binary search";
+ }
+ return "none";
+}
+
static void __init memblock_add_mem_detect_info(void)
{
unsigned long start, end;
int i;
+ memblock_dbg("physmem info source: %s (%hhd)\n",
+ get_mem_info_source(), mem_detect.info_source);
/* keep memblock lists close to the kernel */
memblock_set_bottom_up(true);
for_each_mem_detect_block(i, &start, &end)