Commit 7b5c8878 authored Oct 09, 2019 by Faiyaz Mohammed

mm: memblock: Add more debug logs



memblock_alloc is not giving information of owner of the memblock_reserve,
when we pass through command line "memblock=debug".
Below information is not enough for memory statistics.
for example:
[    0.000000] memblock_reserve: [0x000000013fbf8000-0x000000013fbf8fff] memblock_alloc+0x50/0x60.

To enhance the memblokc_dbg information or to get the exact owner of the
memblock_reserve added debug logs in different memblock alloc functions,
which is helpful for memory statistics.
After adding logs:
[    0.000000] memblock_alloc: size: 4096 align: 4096 early_pgtable_alloc+0x18/0x98.
[    0.000000] memblock_reserve: [0x000000013fbf9000-0x000000013fbf9fff] memblock_alloc+0x50/0x60.

Change-Id: Ibc9603f71fe3150af67398658d04c34f824b47e1
Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org>

parent 1fa28c49

include/linux/memblock.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -367,6 +367,9 @@ void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,

		static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align)
		{

		memblock_dbg("%s: %llu bytes align=0x%llx %pS\n",
		__func__, (u64)size, (u64)align, (void *)_RET_IP_);
		return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
		MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
		}

mm/memblock.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1413,6 +1413,10 @@ phys_addr_t __init memblock_phys_alloc_range(phys_addr_t size,
		phys_addr_t start,
		phys_addr_t end)
		{
		memblock_dbg("%s: %llu bytes align=0x%llx from=%pa max_addr=%pa %pS\n",
		__func__, (u64)size, (u64)align, &start, &end,
		(void *)_RET_IP_);

		return memblock_alloc_range_nid(size, align, start, end, NUMA_NO_NODE);
		}