| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 7 May 2012 13:37:50 +0200
From: Johannes Weiner <hannes@...xchg.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Gavin Shan <shangw@...ux.vnet.ibm.com>,
David Miller <davem@...emloft.net>,
Yinghai Lu <yinghai@...nel.org>, Tejun Heo <tj@...nel.org>,
linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [patch 08/10] 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@...xchg.org>
---
mm/nobootmem.c | 106 +++++++++++++++++++++++++++++---------------------------
1 file changed, 54 insertions(+), 52 deletions(-)
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index b078ff8..77069bb 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -275,6 +275,57 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align,
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
* @pgdat: node to allocate from
@@ -293,30 +344,10 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_node(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);
-again:
- 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;
+ return ___alloc_bootmem_node(pgdat, size, align, goal, 0);
}
void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
@@ -347,22 +378,6 @@ 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_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
#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
#endif
@@ -404,22 +419,9 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
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, 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;
+ return ___alloc_bootmem_node(pgdat, size, align, goal,
+ ARCH_LOW_ADDRESS_LIMIT);
}
--
1.7.10
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists