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authorVegard Nossum <vegard.nossum@gmail.com>2009-06-15 15:50:49 +0200
committerVegard Nossum <vegard.nossum@gmail.com>2009-06-15 15:50:49 +0200
commit722f2a6c87f34ee0fd0130a8cf45f81e0705594a (patch)
tree50b054df34d2731eb0ba0cf1a6c27e43e7eed428 /mm
parent7a0aeb14e18ad59394bd9bbc6e57fb345819e748 (diff)
parent45e3e1935e2857c54783291107d33323b3ef33c8 (diff)
Merge commit 'linus/master' into HEAD
Conflicts: MAINTAINERS Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/maccess.c2
-rw-r--r--mm/page_cgroup.c29
-rw-r--r--mm/slab.c41
-rw-r--r--mm/slub.c16
-rw-r--r--mm/vmscan.c4
5 files changed, 59 insertions, 33 deletions
diff --git a/mm/maccess.c b/mm/maccess.c
index ac40796cfb1..9073695ff25 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -39,7 +39,7 @@ EXPORT_SYMBOL_GPL(probe_kernel_read);
* Safely write to address @dst from the buffer at @src. If a kernel fault
* happens, handle that and return -EFAULT.
*/
-long probe_kernel_write(void *dst, void *src, size_t size)
+long notrace __weak probe_kernel_write(void *dst, void *src, size_t size)
{
long ret;
mm_segment_t old_fs = get_fs();
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 3dd4a909a1d..11a8a10a390 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -47,8 +47,6 @@ static int __init alloc_node_page_cgroup(int nid)
struct page_cgroup *base, *pc;
unsigned long table_size;
unsigned long start_pfn, nr_pages, index;
- struct page *page;
- unsigned int order;
start_pfn = NODE_DATA(nid)->node_start_pfn;
nr_pages = NODE_DATA(nid)->node_spanned_pages;
@@ -57,13 +55,11 @@ static int __init alloc_node_page_cgroup(int nid)
return 0;
table_size = sizeof(struct page_cgroup) * nr_pages;
- order = get_order(table_size);
- page = alloc_pages_node(nid, GFP_NOWAIT | __GFP_ZERO, order);
- if (!page)
- page = alloc_pages_node(-1, GFP_NOWAIT | __GFP_ZERO, order);
- if (!page)
+
+ base = __alloc_bootmem_node_nopanic(NODE_DATA(nid),
+ table_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
+ if (!base)
return -ENOMEM;
- base = page_address(page);
for (index = 0; index < nr_pages; index++) {
pc = base + index;
__init_page_cgroup(pc, start_pfn + index);
@@ -73,7 +69,7 @@ static int __init alloc_node_page_cgroup(int nid)
return 0;
}
-void __init page_cgroup_init(void)
+void __init page_cgroup_init_flatmem(void)
{
int nid, fail;
@@ -117,16 +113,11 @@ static int __init_refok init_section_page_cgroup(unsigned long pfn)
if (!section->page_cgroup) {
nid = page_to_nid(pfn_to_page(pfn));
table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
- if (slab_is_available()) {
- base = kmalloc_node(table_size,
- GFP_KERNEL | __GFP_NOWARN, nid);
- if (!base)
- base = vmalloc_node(table_size, nid);
- } else {
- base = __alloc_bootmem_node_nopanic(NODE_DATA(nid),
- table_size,
- PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
- }
+ VM_BUG_ON(!slab_is_available());
+ base = kmalloc_node(table_size,
+ GFP_KERNEL | __GFP_NOWARN, nid);
+ if (!base)
+ base = vmalloc_node(table_size, nid);
} else {
/*
* We don't have to allocate page_cgroup again, but
diff --git a/mm/slab.c b/mm/slab.c
index 6a1ad0b9a94..af3376d0a83 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -305,6 +305,12 @@ struct kmem_list3 {
};
/*
+ * The slab allocator is initialized with interrupts disabled. Therefore, make
+ * sure early boot allocations don't accidentally enable interrupts.
+ */
+static gfp_t slab_gfp_mask __read_mostly = SLAB_GFP_BOOT_MASK;
+
+/*
* Need this for bootstrapping a per node allocator.
*/
#define NUM_INIT_LISTS (3 * MAX_NUMNODES)
@@ -673,6 +679,7 @@ static enum {
NONE,
PARTIAL_AC,
PARTIAL_L3,
+ EARLY,
FULL
} g_cpucache_up;
@@ -681,7 +688,7 @@ static enum {
*/
int slab_is_available(void)
{
- return g_cpucache_up == FULL;
+ return g_cpucache_up >= EARLY;
}
static DEFINE_PER_CPU(struct delayed_work, reap_work);
@@ -1545,19 +1552,27 @@ void __init kmem_cache_init(void)
}
}
- /* 6) resize the head arrays to their final sizes */
- {
- struct kmem_cache *cachep;
- mutex_lock(&cache_chain_mutex);
- list_for_each_entry(cachep, &cache_chain, next)
- if (enable_cpucache(cachep, GFP_NOWAIT))
- BUG();
- mutex_unlock(&cache_chain_mutex);
- }
+ g_cpucache_up = EARLY;
/* Annotate slab for lockdep -- annotate the malloc caches */
init_lock_keys();
+}
+
+void __init kmem_cache_init_late(void)
+{
+ struct kmem_cache *cachep;
+
+ /*
+ * Interrupts are enabled now so all GFP allocations are safe.
+ */
+ slab_gfp_mask = __GFP_BITS_MASK;
+ /* 6) resize the head arrays to their final sizes */
+ mutex_lock(&cache_chain_mutex);
+ list_for_each_entry(cachep, &cache_chain, next)
+ if (enable_cpucache(cachep, GFP_NOWAIT))
+ BUG();
+ mutex_unlock(&cache_chain_mutex);
/* Done! */
g_cpucache_up = FULL;
@@ -2034,7 +2049,7 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp)
for_each_online_node(node) {
cachep->nodelists[node] =
kmalloc_node(sizeof(struct kmem_list3),
- GFP_KERNEL, node);
+ gfp, node);
BUG_ON(!cachep->nodelists[node]);
kmem_list3_init(cachep->nodelists[node]);
}
@@ -3286,6 +3301,8 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
unsigned long save_flags;
void *ptr;
+ flags &= slab_gfp_mask;
+
lockdep_trace_alloc(flags);
if (slab_should_failslab(cachep, flags))
@@ -3369,6 +3386,8 @@ __cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller)
unsigned long save_flags;
void *objp;
+ flags &= slab_gfp_mask;
+
lockdep_trace_alloc(flags);
if (slab_should_failslab(cachep, flags))
diff --git a/mm/slub.c b/mm/slub.c
index 898fb5047dc..15960a09abb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -179,6 +179,12 @@ static enum {
SYSFS /* Sysfs up */
} slab_state = DOWN;
+/*
+ * The slab allocator is initialized with interrupts disabled. Therefore, make
+ * sure early boot allocations don't accidentally enable interrupts.
+ */
+static gfp_t slab_gfp_mask __read_mostly = SLAB_GFP_BOOT_MASK;
+
/* A list of all slab caches on the system */
static DECLARE_RWSEM(slub_lock);
static LIST_HEAD(slab_caches);
@@ -1618,6 +1624,8 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
unsigned long flags;
unsigned int objsize;
+ gfpflags &= slab_gfp_mask;
+
lockdep_trace_alloc(gfpflags);
might_sleep_if(gfpflags & __GFP_WAIT);
@@ -3132,6 +3140,14 @@ void __init kmem_cache_init(void)
nr_cpu_ids, nr_node_ids);
}
+void __init kmem_cache_init_late(void)
+{
+ /*
+ * Interrupts are enabled now so all GFP allocations are safe.
+ */
+ slab_gfp_mask = __GFP_BITS_MASK;
+}
+
/*
* Find a mergeable slab cache
*/
diff --git a/mm/vmscan.c b/mm/vmscan.c
index d254306562c..95c08a8cc2b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2056,7 +2056,7 @@ unsigned long global_lru_pages(void)
+ global_page_state(NR_INACTIVE_FILE);
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_HIBERNATION
/*
* Helper function for shrink_all_memory(). Tries to reclaim 'nr_pages' pages
* from LRU lists system-wide, for given pass and priority.
@@ -2196,7 +2196,7 @@ out:
return sc.nr_reclaimed;
}
-#endif
+#endif /* CONFIG_HIBERNATION */
/* It's optimal to keep kswapds on the same CPUs as their memory, but
not required for correctness. So if the last cpu in a node goes