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mm/memblock: use WARN_ONCE when MAX_NUMNODES passed as input parameter 

Check nid parameter and produce warning if it has deprecated
MAX_NUMNODES value.  Also re-assign NUMA_NO_NODE value to the nid
parameter in this case.

These will help to identify the wrong API usage (the caller) and make
code simpler.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Grygorii Strashko 2014-01-21 15:50:55 -08:00 committed by Linus Torvalds
parent 9a28f9dc8d
commit 560dca27a6
1 changed files with 8 additions and 13 deletions
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21
mm/memblock.c
View File

@ -785,11 +785,9 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid,
struct memblock_type *rsv = &memblock.reserved;
int mi = *idx & 0xffffffff;
int ri = *idx >> 32;
bool check_node = (nid != NUMA_NO_NODE) && (nid != MAX_NUMNODES);
if (nid == MAX_NUMNODES)
pr_warn_once("%s: Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n",
__func__);
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n"))
nid = NUMA_NO_NODE;
for ( ; mi < mem->cnt; mi++) {
struct memblock_region *m = &mem->regions[mi];
@ -797,7 +795,7 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid,
phys_addr_t m_end = m->base + m->size;
/* only memory regions are associated with nodes, check it */
if (check_node && nid != memblock_get_region_node(m))
if (nid != NUMA_NO_NODE && nid != memblock_get_region_node(m))
continue;
/* scan areas before each reservation for intersection */
@ -858,11 +856,9 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid,
struct memblock_type *rsv = &memblock.reserved;
int mi = *idx & 0xffffffff;
int ri = *idx >> 32;
bool check_node = (nid != NUMA_NO_NODE) && (nid != MAX_NUMNODES);
if (nid == MAX_NUMNODES)
pr_warn_once("%s: Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n",
__func__);
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n"))
nid = NUMA_NO_NODE;
if (*idx == (u64)ULLONG_MAX) {
mi = mem->cnt - 1;
@ -875,7 +871,7 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid,
phys_addr_t m_end = m->base + m->size;
/* only memory regions are associated with nodes, check it */
if (check_node && nid != memblock_get_region_node(m))
if (nid != NUMA_NO_NODE && nid != memblock_get_region_node(m))
continue;
/* skip hotpluggable memory regions if needed */
@ -1067,9 +1063,8 @@ static void * __init memblock_virt_alloc_internal(
phys_addr_t alloc;
void *ptr;
if (nid == MAX_NUMNODES)
pr_warn("%s: usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE\n",
__func__);
if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n"))
nid = NUMA_NO_NODE;
/*
* Detect any accidental use of these APIs after slab is ready, as at