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authorYinghai Lu <yinghai@kernel.org>2014-01-27 17:06:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-27 21:02:38 -0800
commitad6492b80f60a2139fa9bf8fd79b182fe5e3647c (patch)
treef52530fb2240679a0f88ba5047a3bedc6dacf796 /include
parentba635f8cd20ebc7bddf1eb8e1f4eae28a034e916 (diff)
memblock, nobootmem: add memblock_virt_alloc_low()
The new memblock_virt APIs are used to replaced old bootmem API. We need to allocate page below 4G for swiotlb. That should fix regression on Andrew's system that is using swiotlb. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/bootmem.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 2fae55def608..b388223bd4a9 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -175,6 +175,27 @@ static inline void * __init memblock_virt_alloc_nopanic(
NUMA_NO_NODE);
}
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
+
+static inline void * __init memblock_virt_alloc_low(
+ phys_addr_t size, phys_addr_t align)
+{
+ return memblock_virt_alloc_try_nid(size, align,
+ BOOTMEM_LOW_LIMIT,
+ ARCH_LOW_ADDRESS_LIMIT,
+ NUMA_NO_NODE);
+}
+static inline void * __init memblock_virt_alloc_low_nopanic(
+ phys_addr_t size, phys_addr_t align)
+{
+ return memblock_virt_alloc_try_nid_nopanic(size, align,
+ BOOTMEM_LOW_LIMIT,
+ ARCH_LOW_ADDRESS_LIMIT,
+ NUMA_NO_NODE);
+}
+
static inline void * __init memblock_virt_alloc_from_nopanic(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{
@@ -238,6 +259,22 @@ static inline void * __init memblock_virt_alloc_nopanic(
return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
}
+static inline void * __init memblock_virt_alloc_low(
+ phys_addr_t size, phys_addr_t align)
+{
+ if (!align)
+ align = SMP_CACHE_BYTES;
+ return __alloc_bootmem_low(size, align, BOOTMEM_LOW_LIMIT);
+}
+
+static inline void * __init memblock_virt_alloc_low_nopanic(
+ phys_addr_t size, phys_addr_t align)
+{
+ if (!align)
+ align = SMP_CACHE_BYTES;
+ return __alloc_bootmem_low_nopanic(size, align, BOOTMEM_LOW_LIMIT);
+}
+
static inline void * __init memblock_virt_alloc_from_nopanic(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{