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mm: nobootmem: unify allocation policy of (non-)panicking node allocations 

While the panicking node-specific allocation function tries to satisfy
node+goal, goal, node, anywhere, the non-panicking function still does
node+goal, goal, anywhere.

Make it simpler: define the panicking version in terms of the non-panicking
one, like the node-agnostic interface, so they always behave the same way
apart from how to deal with allocation failure.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2012-05-29 15:06:35 -07:00 committed by Linus Torvalds
parent 2c478eae96
commit ba53986833
1 changed files with 54 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
mm/nobootmem.c
View File

@ -274,6 +274,57 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align,
return ___alloc_bootmem(size, align, goal, limit); return ___alloc_bootmem(size, align, goal, limit);
} }
static void * __init ___alloc_bootmem_node_nopanic(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal,
unsigned long limit)
{
void *ptr;
again:
ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
goal, limit);
if (ptr)
return ptr;
ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
goal, limit);
if (ptr)
return ptr;
if (goal) {
goal = 0;
goto again;
}
return NULL;
}
void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal)
{
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
return ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, 0);
}
void * __init ___alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal,
unsigned long limit)
{
void *ptr;
ptr = ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, limit);
if (ptr)
return ptr;
printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
panic("Out of memory");
return NULL;
}
/** /**
* __alloc_bootmem_node - allocate boot memory from a specific node * __alloc_bootmem_node - allocate boot memory from a specific node
* @pgdat: node to allocate from * @pgdat: node to allocate from
@ -292,30 +343,10 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal) unsigned long align, unsigned long goal)
{ {
void *ptr;
if (WARN_ON_ONCE(slab_is_available())) if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
again: return ___alloc_bootmem_node(pgdat, size, align, goal, 0);
ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
goal, -1ULL);
if (ptr)
return ptr;
ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
goal, -1ULL);
if (ptr)
return ptr;
if (goal) {
goal = 0;
goto again;
}
printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
panic("Out of memory");
return NULL;
} }
void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size, void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
@ -346,22 +377,6 @@ void * __init alloc_bootmem_section(unsigned long size,
} }
#endif #endif
void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal)
{
void *ptr;
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
goal, -1ULL);
if (ptr)
return ptr;
return __alloc_bootmem_nopanic(size, align, goal);
}
#ifndef ARCH_LOW_ADDRESS_LIMIT #ifndef ARCH_LOW_ADDRESS_LIMIT
#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
#endif #endif
@ -403,22 +418,9 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size, void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal) unsigned long align, unsigned long goal)
{ {
void *ptr;
if (WARN_ON_ONCE(slab_is_available())) if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
ptr = __alloc_memory_core_early(pgdat->node_id, size, align, return ___alloc_bootmem_node(pgdat, size, align, goal,
goal, ARCH_LOW_ADDRESS_LIMIT); ARCH_LOW_ADDRESS_LIMIT);
if (ptr)
return ptr;
ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
goal, ARCH_LOW_ADDRESS_LIMIT);
if (ptr)
return ptr;
printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
panic("Out of memory");
return NULL;
} }