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authorJohannes Weiner <hannes@cmpxchg.org>2012-05-29 15:06:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:22 -0700
commit421456edd27cf512b8f0025245a0f3572bd69b00 (patch)
tree5514646e0a4113774f9c612b57b645206f71439e /mm/bootmem.c
parentab3818432294a19ad793a0965d89867b4ce6255b (diff)
downloadlinux-421456edd27cf512b8f0025245a0f3572bd69b00.tar.gz
mm: bootmem: 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: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Cc: Yinghai Lu <yinghai@kernel.org> 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>
Diffstat (limited to 'mm/bootmem.c')
-rw-r--r--mm/bootmem.c44
1 files changed, 24 insertions, 20 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index b5babdfb9ef..d9185c30f3c 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -698,7 +698,7 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align,
return ___alloc_bootmem(size, align, goal, limit);
}
-static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata,
+static void * __init ___alloc_bootmem_node_nopanic(bootmem_data_t *bdata,
unsigned long size, unsigned long align,
unsigned long goal, unsigned long limit)
{
@@ -722,6 +722,29 @@ again:
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->bdata, size,
+ align, goal, 0);
+}
+
+void * __init ___alloc_bootmem_node(bootmem_data_t *bdata, unsigned long size,
+ unsigned long align, unsigned long goal,
+ unsigned long limit)
+{
+ void *ptr;
+
+ ptr = ___alloc_bootmem_node_nopanic(bdata, size, align, goal, 0);
+ if (ptr)
+ return ptr;
+
printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
panic("Out of memory");
return NULL;
@@ -802,25 +825,6 @@ void * __init alloc_bootmem_section(unsigned long size,
}
#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_arch_preferred_bootmem(pgdat->bdata, size, align, goal, 0);
- if (ptr)
- return ptr;
-
- ptr = alloc_bootmem_bdata(pgdat->bdata, size, align, goal, 0);
- if (ptr)
- return ptr;
-
- return __alloc_bootmem_nopanic(size, align, goal);
-}
-
#ifndef ARCH_LOW_ADDRESS_LIMIT
#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
#endif