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UPSTREAM: mm: memblock: add more debug logs

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It is useful to know the exact caller of memblock_phys_alloc_range() to
track early memory reservations during development.

Currently, when memblock debugging is enabled, the allocations done with
memblock_phys_alloc_range() are only reported at memblock_reserve():

[    0.000000] memblock_reserve: [0x000000023fc6b000-0x000000023fc6bfff] memblock_alloc_range_nid+0xc0/0x188

Add memblock_dbg() to memblock_phys_alloc_range() to get details about
its usage.

For example:

[    0.000000] memblock_phys_alloc_range: 4096 bytes align=0x1000 from=0x0000000000000000 max_addr=0x0000000000000000 early_pgtable_alloc+0x24/0x178
[    0.000000] memblock_reserve: [0x000000023fc6b000-0x000000023fc6bfff] memblock_alloc_range_nid+0xc0/0x188

Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Bug: 187741816
(cherry picked from commit b5cf2d6c81
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git)

Change-Id: I7fb49411513a151f0c9dbb8774f489a59e776ac0
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
This commit is contained in:
Faiyaz Mohammed 2020-11-16 10:14:04 +05:30 • committed by Vijayanand Jitta
commit f2f8d7326a
1 changed files with 3 additions and 0 deletions
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3
mm/memblock.c
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@ -1385,6 +1385,9 @@ 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,
false);
}