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authorDavid S. Miller <davem@davemloft.net>2016-05-09 21:59:24 +0200
committerDavid S. Miller <davem@davemloft.net>2016-05-09 21:59:24 +0200
commite800072c18f0d7b89a80fa46dceb3d080c80e09c (patch)
tree8da6cb7944762a60ec37594720c1ad2757631c2f /lib/stackdepot.c
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next (diff)
parentMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert... (diff)
downloadlinux-e800072c18f0d7b89a80fa46dceb3d080c80e09c.tar.xz
linux-e800072c18f0d7b89a80fa46dceb3d080c80e09c.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
In netdevice.h we removed the structure in net-next that is being changes in 'net'. In macsec.c and rtnetlink.c we have overlaps between fixes in 'net' and the u64 attribute changes in 'net-next'. The mlx5 conflicts have to do with vxlan support dependencies. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/stackdepot.c')
-rw-r--r--lib/stackdepot.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 9e0b0315a724..53ad6c0831ae 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -42,12 +42,14 @@
#define DEPOT_STACK_BITS (sizeof(depot_stack_handle_t) * 8)
+#define STACK_ALLOC_NULL_PROTECTION_BITS 1
#define STACK_ALLOC_ORDER 2 /* 'Slab' size order for stack depot, 4 pages */
#define STACK_ALLOC_SIZE (1LL << (PAGE_SHIFT + STACK_ALLOC_ORDER))
#define STACK_ALLOC_ALIGN 4
#define STACK_ALLOC_OFFSET_BITS (STACK_ALLOC_ORDER + PAGE_SHIFT - \
STACK_ALLOC_ALIGN)
-#define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - STACK_ALLOC_OFFSET_BITS)
+#define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - \
+ STACK_ALLOC_NULL_PROTECTION_BITS - STACK_ALLOC_OFFSET_BITS)
#define STACK_ALLOC_SLABS_CAP 1024
#define STACK_ALLOC_MAX_SLABS \
(((1LL << (STACK_ALLOC_INDEX_BITS)) < STACK_ALLOC_SLABS_CAP) ? \
@@ -59,6 +61,7 @@ union handle_parts {
struct {
u32 slabindex : STACK_ALLOC_INDEX_BITS;
u32 offset : STACK_ALLOC_OFFSET_BITS;
+ u32 valid : STACK_ALLOC_NULL_PROTECTION_BITS;
};
};
@@ -136,6 +139,7 @@ static struct stack_record *depot_alloc_stack(unsigned long *entries, int size,
stack->size = size;
stack->handle.slabindex = depot_index;
stack->handle.offset = depot_offset >> STACK_ALLOC_ALIGN;
+ stack->handle.valid = 1;
memcpy(stack->entries, entries, size * sizeof(unsigned long));
depot_offset += required_size;