xnu-7195.50.7.100.1.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 6cced5b2fe8577933f14fd77a896ab53401abce9..c8a03a235f33485d0d5e334dad45ff1adb949d5a 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@
  * 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
  * 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.
  * 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.
  * 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,
  * 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,


@@ -22,13 +22,12 @@
  * 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.
  * 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@
  */
 
 #include <kern/kern_types.h>
 #include <kern/locks.h>
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #include <kern/kern_types.h>
 #include <kern/locks.h>

-#include <kern/kalloc.h>

 #include <vm/vm_kern.h>
 #include <mach/kern_return.h>
 #include <kern/queue.h>
 #include <vm/vm_kern.h>
 #include <mach/kern_return.h>
 #include <kern/queue.h>


@@ -38,70 +37,88 @@
 #include <libkern/crypto/aes.h>
 #include <kern/host_statistics.h>
 
 #include <libkern/crypto/aes.h>
 #include <kern/host_statistics.h>
 

+#if CONFIG_EMBEDDED

 
 

-#define SANITY_CHECK_SWAP_ROUTINES     0
+#define MIN_SWAP_FILE_SIZE              (64 * 1024 * 1024ULL)

 
 

-#if SANITY_CHECK_SWAP_ROUTINES
+#define MAX_SWAP_FILE_SIZE              (128 * 1024 * 1024ULL)

 
 

-#define MIN_SWAP_FILE_SIZE             (4 * 1024)
+#else /* CONFIG_EMBEDDED */

 
 

-#define MAX_SWAP_FILE_SIZE             (4 * 1024)
+#define MIN_SWAP_FILE_SIZE              (256 * 1024 * 1024ULL)

 
 

-#define        COMPRESSED_SWAP_CHUNK_SIZE      (4 * 1024)
+#define MAX_SWAP_FILE_SIZE              (1 * 1024 * 1024 * 1024ULL)

 
 

-#define VM_SWAPFILE_HIWATER_SEGS       (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)
+#endif /* CONFIG_EMBEDDED */

 
 

-#define SWAPFILE_RECLAIM_THRESHOLD_SEGS        (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)
+#define COMPRESSED_SWAP_CHUNK_SIZE      (C_SEG_BUFSIZE)

 
 

-#else /* SANITY_CHECK_SWAP_ROUTINES */
+#define VM_SWAPFILE_HIWATER_SEGS        (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)

 
 

+#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 MIN_SWAP_FILE_SIZE             (256 * 1024 * 1024)
+#if defined(XNU_TARGET_OS_OSX)
+#define SWAP_FILE_NAME          "/System/Volumes/VM/swapfile"
+#else
+#define SWAP_FILE_NAME          "/private/var/vm/swapfile"
+#endif

 
 

-#define MAX_SWAP_FILE_SIZE             (1 * 1024 * 1024 * 1024)
+#define SWAPFILENAME_LEN        (int)(strlen(SWAP_FILE_NAME))

 
 
 
 

-#define        COMPRESSED_SWAP_CHUNK_SIZE      (C_SEG_BUFSIZE)
+#define SWAP_SLOT_MASK          0x1FFFFFFFF
+#define SWAP_DEVICE_SHIFT       33

 
 

-#define VM_SWAPFILE_HIWATER_SEGS       (MIN_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)
+extern int              vm_num_swap_files;

 
 

-#define SWAPFILE_RECLAIM_THRESHOLD_SEGS        ((15 * (MAX_SWAP_FILE_SIZE / COMPRESSED_SWAP_CHUNK_SIZE)) / 10)
+struct swapfile;

 
 

-#endif /* SANITY_CHECK_SWAP_ROUTINES */
+void vm_swap_init(void);
+boolean_t vm_swap_create_file(void);

 
 

-#define SWAP_FILE_NAME         "/var/vm/swapfile"
-#define SWAPFILENAME_LEN       (int)(strlen(SWAP_FILE_NAME))
-#define SWAPFILENAME_INDEX_LEN 2       /* Doesn't include the terminating NULL character */

 
 

-#define SWAP_SLOT_MASK         0x1FFFFFFFF
-#define SWAP_DEVICE_SHIFT      33
+struct swapout_io_completion {
+       int          swp_io_busy;
+       int          swp_io_done;
+       int          swp_io_error;

 
 

-extern int             vm_num_swap_files;
-extern boolean_t       vm_swap_up;
+       uint32_t     swp_c_size;
+       c_segment_t  swp_c_seg;

 
 

-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;
+       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, boolean_t);
+kern_return_t vm_swap_put(vm_offset_t, uint64_t*, uint32_t, c_segment_t, struct swapout_io_completion *);

 
 

-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);

 void vm_swap_flush(void);
 void vm_swap_reclaim(void);
 void vm_swap_encrypt(c_segment_t);
 uint64_t vm_swap_get_total_space(void);
 uint64_t vm_swap_get_used_space(void);
 uint64_t vm_swap_get_free_space(void);
 void vm_swap_flush(void);
 void vm_swap_reclaim(void);
 void vm_swap_encrypt(c_segment_t);
 uint64_t vm_swap_get_total_space(void);
 uint64_t vm_swap_get_used_space(void);
 uint64_t vm_swap_get_free_space(void);

+uint64_t vm_swap_get_max_configured_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);
 
 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 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