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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>
This commit is contained in:
Vasily Gorbik 2018-09-24 15:27:30 +02:00 committed by Martin Schwidefsky
parent 54c57795e8
commit f01b8bca08
1 changed files with 17 additions and 0 deletions
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17
arch/s390/kernel/setup.c
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@ -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)