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Subject[RFC 07/23] mm/memblock: debug: correct displaying of upper memory boundary
Date
From: Grygorii Strashko <grygorii.strashko@ti.com>

When debugging is enabled (cmdline has "memblock=debug") the memblock
will display upper memory boundary per each allocated/freed memory range
wrongly. For example:
memblock_reserve: [0x0000009e7e8000-0x0000009e7ed000] _memblock_early_alloc_try_nid_nopanic+0xfc/0x12c

The 0x0000009e7ed000 is displayed instead of 0x0000009e7ecfff

Hence, correct this by changing formula used to calculate upper memory
boundary to (u64)base + size - 1 instead of (u64)base + size everywhere
in the debug messages.

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
---
mm/memblock.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index c67f4bb..d903138 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -547,7 +547,7 @@ int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size)
{
memblock_dbg(" memblock_free: [%#016llx-%#016llx] %pF\n",
(unsigned long long)base,
- (unsigned long long)base + size,
+ (unsigned long long)base + size - 1,
(void *)_RET_IP_);

return __memblock_remove(&memblock.reserved, base, size);
@@ -559,7 +559,7 @@ int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)

memblock_dbg("memblock_reserve: [%#016llx-%#016llx] %pF\n",
(unsigned long long)base,
- (unsigned long long)base + size,
+ (unsigned long long)base + size - 1,
(void *)_RET_IP_);

return memblock_add_region(_rgn, base, size, MAX_NUMNODES);
@@ -914,7 +914,7 @@ void * __init memblock_early_alloc_try_nid(int nid,
void __init __memblock_free_early(phys_addr_t base, phys_addr_t size)
{
memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
- __func__, (u64)base, (u64)base + size,
+ __func__, (u64)base, (u64)base + size - 1,
(void *)_RET_IP_);
kmemleak_free_part(__va(base), size);
__memblock_remove(&memblock.reserved, base, size);
@@ -925,7 +925,7 @@ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size)
u64 cursor, end;

memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
- __func__, (u64)base, (u64)base + size,
+ __func__, (u64)base, (u64)base + size - 1,
(void *)_RET_IP_);
kmemleak_free_part(__va(base), size);
cursor = PFN_UP(base);
--
1.7.9.5


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