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-rw-r--r--include/linux/blkdev.h5
-rw-r--r--include/linux/bootmem.h4
-rw-r--r--include/linux/smp.h6
-rw-r--r--include/linux/zsmalloc.h51
4 files changed, 59 insertions, 7 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0375654adb28..8678c4322b44 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -95,10 +95,7 @@ enum rq_cmd_type_bits {
* as well!
*/
struct request {
- union {
- struct list_head queuelist;
- struct llist_node ll_list;
- };
+ struct list_head queuelist;
union {
struct call_single_data csd;
struct work_struct mq_flush_data;
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index b388223bd4a9..db51fe4fe317 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -264,7 +264,7 @@ static inline void * __init memblock_virt_alloc_low(
{
if (!align)
align = SMP_CACHE_BYTES;
- return __alloc_bootmem_low(size, align, BOOTMEM_LOW_LIMIT);
+ return __alloc_bootmem_low(size, align, 0);
}
static inline void * __init memblock_virt_alloc_low_nopanic(
@@ -272,7 +272,7 @@ static inline void * __init memblock_virt_alloc_low_nopanic(
{
if (!align)
align = SMP_CACHE_BYTES;
- return __alloc_bootmem_low_nopanic(size, align, BOOTMEM_LOW_LIMIT);
+ return __alloc_bootmem_low_nopanic(size, align, 0);
}
static inline void * __init memblock_virt_alloc_from_nopanic(
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 5da22ee42e16..3834f43f9993 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -11,12 +11,16 @@
#include <linux/list.h>
#include <linux/cpumask.h>
#include <linux/init.h>
+#include <linux/llist.h>
extern void cpu_idle(void);
typedef void (*smp_call_func_t)(void *info);
struct call_single_data {
- struct list_head list;
+ union {
+ struct list_head list;
+ struct llist_node llist;
+ };
smp_call_func_t func;
void *info;
u16 flags;
diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h
new file mode 100644
index 000000000000..e44d634e7fb7
--- /dev/null
+++ b/include/linux/zsmalloc.h
@@ -0,0 +1,51 @@
+/*
+ * zsmalloc memory allocator
+ *
+ * Copyright (C) 2011 Nitin Gupta
+ * Copyright (C) 2012, 2013 Minchan Kim
+ *
+ * This code is released using a dual license strategy: BSD/GPL
+ * You can choose the license that better fits your requirements.
+ *
+ * Released under the terms of 3-clause BSD License
+ * Released under the terms of GNU General Public License Version 2.0
+ */
+
+#ifndef _ZS_MALLOC_H_
+#define _ZS_MALLOC_H_
+
+#include <linux/types.h>
+
+/*
+ * zsmalloc mapping modes
+ *
+ * NOTE: These only make a difference when a mapped object spans pages.
+ * They also have no effect when PGTABLE_MAPPING is selected.
+ */
+enum zs_mapmode {
+ ZS_MM_RW, /* normal read-write mapping */
+ ZS_MM_RO, /* read-only (no copy-out at unmap time) */
+ ZS_MM_WO /* write-only (no copy-in at map time) */
+ /*
+ * NOTE: ZS_MM_WO should only be used for initializing new
+ * (uninitialized) allocations. Partial writes to already
+ * initialized allocations should use ZS_MM_RW to preserve the
+ * existing data.
+ */
+};
+
+struct zs_pool;
+
+struct zs_pool *zs_create_pool(gfp_t flags);
+void zs_destroy_pool(struct zs_pool *pool);
+
+unsigned long zs_malloc(struct zs_pool *pool, size_t size);
+void zs_free(struct zs_pool *pool, unsigned long obj);
+
+void *zs_map_object(struct zs_pool *pool, unsigned long handle,
+ enum zs_mapmode mm);
+void zs_unmap_object(struct zs_pool *pool, unsigned long handle);
+
+u64 zs_get_total_size_bytes(struct zs_pool *pool);
+
+#endif