xnu-6153.11.26.tar.gz

[apple/xnu.git] / osfmk / vm / vm_compressor_backing_store.h

diff --git a/osfmk/vm/vm_compressor_backing_store.h b/osfmk/vm/vm_compressor_backing_store.h
index fd2ba4bd0491632896043fed86f151676bf4e14a..abc0c3be2594ab11c16ec9b7e14445e8be66c94a 100644 (file)
--- a/osfmk/vm/vm_compressor_backing_store.h
+++ b/osfmk/vm/vm_compressor_backing_store.h
@@ -2,7 +2,7 @@
  * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- * 
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
- * 
+ *
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -22,7 +22,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
+ *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
@@ -38,42 +38,68 @@
 #include <libkern/crypto/aes.h>
 #include <kern/host_statistics.h>
 
+#if CONFIG_EMBEDDED
 
-#define MIN_SWAP_FILE_SIZE             (256 * 1024 * 1024)
+#define MIN_SWAP_FILE_SIZE              (64 * 1024 * 1024)
 
-#define MAX_SWAP_FILE_SIZE             (1 * 1024 * 1024 * 1024)
+#define MAX_SWAP_FILE_SIZE              (128 * 1024 * 1024)
 
+#else /* CONFIG_EMBEDDED */
 
-#define        COMPRESSED_SWAP_CHUNK_SIZE      (C_SEG_BUFSIZE)
+#define MIN_SWAP_FILE_SIZE              (256 * 1024 * 1024)
 
-#define VM_SWAPFILE_HIWATER_SEGS       (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)
+#define MAX_SWAP_FILE_SIZE              (1 * 1024 * 1024 * 1024)
 
-#define SWAPFILE_RECLAIM_THRESHOLD_SEGS        ((17 * (MAX_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)) / 10)
-#define SWAPFILE_RECLAIM_MINIMUM_SEGS  ((13 * (MAX_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)) / 10)
+#endif /* CONFIG_EMBEDDED */
 
+#define COMPRESSED_SWAP_CHUNK_SIZE      (C_SEG_BUFSIZE)
 
-#define SWAP_FILE_NAME         "/var/vm/swapfile"
-#define SWAPFILENAME_LEN       (int)(strlen(SWAP_FILE_NAME))
+#define VM_SWAPFILE_HIWATER_SEGS        (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)
 
-char   swapfilename[MAX_SWAPFILENAME_LEN + 1];
+#define SWAPFILE_RECLAIM_THRESHOLD_SEGS ((17 * (MAX_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)) / 10)
+#define SWAPFILE_RECLAIM_MINIMUM_SEGS   ((13 * (MAX_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)) / 10)
 
 
-#define SWAP_SLOT_MASK         0x1FFFFFFFF
-#define SWAP_DEVICE_SHIFT      33
+#define SWAP_FILE_NAME          "/private/var/vm/swapfile"
+#define SWAPFILENAME_LEN        (int)(strlen(SWAP_FILE_NAME))
 
-extern int             vm_num_swap_files;
-extern boolean_t       vm_swap_up;
+
+#define SWAP_SLOT_MASK          0x1FFFFFFFF
+#define SWAP_DEVICE_SHIFT       33
+
+extern int              vm_num_swap_files;
 
 struct swapfile;
-lck_grp_attr_t vm_swap_data_lock_grp_attr;
-lck_grp_t      vm_swap_data_lock_grp;
-lck_attr_t     vm_swap_data_lock_attr;
-lck_mtx_ext_t  vm_swap_data_lock_ext;
-lck_mtx_t      vm_swap_data_lock;
+lck_grp_attr_t  vm_swap_data_lock_grp_attr;
+lck_grp_t       vm_swap_data_lock_grp;
+lck_attr_t      vm_swap_data_lock_attr;
+lck_mtx_ext_t   vm_swap_data_lock_ext;
+lck_mtx_t       vm_swap_data_lock;
 
 void vm_swap_init(void);
 boolean_t vm_swap_create_file(void);
-kern_return_t vm_swap_put(vm_offset_t, uint64_t*, uint64_t, c_segment_t);
+
+
+struct swapout_io_completion {
+       int          swp_io_busy;
+       int          swp_io_done;
+       int          swp_io_error;
+
+       uint32_t     swp_c_size;
+       c_segment_t  swp_c_seg;
+
+       struct swapfile *swp_swf;
+       uint64_t        swp_f_offset;
+
+       struct upl_io_completion swp_upl_ctx;
+};
+void vm_swapout_iodone(void *, int);
+
+
+static void vm_swapout_finish(c_segment_t, uint64_t, uint32_t, kern_return_t);
+kern_return_t vm_swap_put_finish(struct swapfile *, uint64_t *, int);
+kern_return_t vm_swap_put(vm_offset_t, uint64_t*, uint32_t, c_segment_t, struct swapout_io_completion *);
+
 void vm_swap_flush(void);
 void vm_swap_reclaim(void);
 void vm_swap_encrypt(c_segment_t);
@@ -84,9 +110,16 @@ uint64_t vm_swap_get_free_space(void);
 struct vnode;
 extern void vm_swapfile_open(const char *path, struct vnode **vp);
 extern void vm_swapfile_close(uint64_t path, struct vnode *vp);
-extern int vm_swapfile_preallocate(struct vnode *vp, uint64_t *size);
+extern int vm_swapfile_preallocate(struct vnode *vp, uint64_t *size, boolean_t *pin);
 extern uint64_t vm_swapfile_get_blksize(struct vnode *vp);
 extern uint64_t vm_swapfile_get_transfer_size(struct vnode *vp);
-extern int vm_swapfile_io(struct vnode *vp, uint64_t offset, uint64_t start, int npages, int flags);
+extern int vm_swapfile_io(struct vnode *vp, uint64_t offset, uint64_t start, int npages, int flags, void *upl_ctx);
 
+#if CONFIG_FREEZE
+boolean_t vm_swap_max_budget(uint64_t *);
+int vm_swap_vol_get_budget(struct vnode* vp, uint64_t *freeze_daily_budget);
+#endif /* CONFIG_FREEZE */
 
+#if RECORD_THE_COMPRESSED_DATA
+extern int vm_record_file_write(struct vnode *vp, uint64_t offset, char *buf, int size);
+#endif