xnu-792.tar.gz

[apple/xnu.git] / osfmk / ppc / savearea.h

diff --git a/osfmk/ppc/savearea.h b/osfmk/ppc/savearea.h
index 0cec372ef2d0de18663d8f2c4ea1fc535caa914a..640b063fcbb820fa08c8a31536cb24e0a984b01e 100644 (file)
--- a/osfmk/ppc/savearea.h
+++ b/osfmk/ppc/savearea.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -19,6 +19,8 @@
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
+#ifdef XNU_KERNEL_PRIVATE
+
 #ifndef _PPC_SAVEAREA_H_
 #define _PPC_SAVEAREA_H_
 
@@ -57,7 +59,7 @@ typedef struct savearea_comm {
 
                                                                                                /*       0x20 */
        unsigned int    save_time[2];                           /* Context save time - for debugging or performance */
-       struct thread_activation        *save_act;              /* Associated activation  */
+       struct thread   *save_act;                                      /* Associated thread */
     unsigned int       save_02c;
        uint64_t                sac_vrswap;                                     /* XOR mask to swap V to R or vice versa */
        unsigned int    save_flags;                                     /* Various flags */
@@ -96,7 +98,6 @@ typedef struct savearea {
        uint64_t                save_xdat1;                                     /* Exception data 1 */
        uint64_t                save_xdat2;                                     /* Exception data 2 */
        uint64_t                save_xdat3;                                     /* Exception data 3 */
-                                             
                                                 /* offset 0x0080 */
        uint64_t                save_r0;
        uint64_t                save_r1;
@@ -309,14 +310,15 @@ struct Saveanchor {
        volatile unsigned int   savefreecnt;    /* 020 Number of saveareas on global free list */
        volatile int                    saveadjust;             /* 024 If 0 number of saveareas is ok, otherwise # to change (pos means grow, neg means shrink */
        volatile int                    saveinuse;              /* 028 Number of areas in use counting those on the local free list */
-       volatile int                    savetarget;             /* 02C Number of savearea's needed */
+       unsigned int                    savetarget;             /* 02C Number of saveareas needed */
        int                                             savemaxcount;   /* 030 Maximum saveareas ever allocated */
-       unsigned int                    saveRSVD034[3]; /* 034 reserved */
+       unsigned int                    saveinusesnapshot;              /* 034 snapshot inuse count */
+       volatile addr64_t               savefreesnapshot;               /* 038 snapshot global free list header */
 /*                                                                                        040 */
-
 };
 #pragma pack()
 
+extern struct Saveanchor       saveanchor;                     /* Aliged savearea anchor */
 
 #define sac_cnt                (4096 / sizeof(savearea))       /* Number of saveareas per page */
 #define sac_empty      (0xFFFFFFFF << (32 - sac_cnt))  /* Mask with all entries empty */
@@ -327,11 +329,11 @@ struct Saveanchor {
 #define LocalSaveMin   (LocalSaveTarget / 2)   /* Min size of local savearea free list before we grow */
 #define LocalSaveMax   (LocalSaveTarget * 2)   /* Max size of local savearea free list before we trim */
 
-#define FreeListMin            (2 * LocalSaveTarget * NCPUS)   /* Always make sure there are enough to fill local list twice per processor */
-#define SaveLowHysteresis      LocalSaveTarget /* The number off from target before we adjust upwards */
-#define SaveHighHysteresis     FreeListMin             /* The number off from target before we adjust downwards */
+#define FreeListMin            (2 * LocalSaveTarget)   /* Always make sure there are enough to fill local list twice per processor */
+#define SaveLowHysteresis      LocalSaveTarget         /* The number off from target before we adjust upwards */
+#define SaveHighHysteresis     (2 * FreeListMin)       /* The number off from target before we adjust downwards */
 #define InitialSaveAreas       (2 * FreeListMin)       /* The number of saveareas to make at boot time */
-#define InitialSaveTarget      FreeListMin             /* The number of saveareas for an initial target. This should be the minimum ever needed. */
+#define InitialSaveTarget      FreeListMin                     /* The number of saveareas for an initial target. This should be the minimum ever needed. */
 #define        InitialSaveBloks        (InitialSaveAreas + sac_cnt - 1) / sac_cnt      /* The number of savearea blocks to allocate at boot */
 #define BackPocketSaveBloks    8                               /* Number of pages of back pocket saveareas */
 
@@ -350,6 +352,17 @@ struct savearea_comm       *save_trim_free(void);  /* Remove free pages from savearea p
 int                            save_recover(void);                     /* returns nonzero if we can recover enough from the free pool */
 void                   savearea_init(vm_offset_t addr);        /* Boot-time savearea initialization */
 
+void                   save_fake_zone_info(            /* report savearea usage statistics as fake zone info */
+                                       int *count,
+                                       vm_size_t *cur_size,
+                                       vm_size_t *max_size,
+                                       vm_size_t *elem_size,
+                                       vm_size_t *alloc_size, 
+                                       int *collectable, 
+                                       int *exhaustable);
+
+void                   save_snapshot(void);
+void                   save_snapshot_restore(void);
 
 #endif /* MACH_KERNEL_PRIVATE */
 #endif /* __APPLE_API_PRIVATE */
@@ -375,3 +388,5 @@ void                        savearea_init(vm_offset_t addr);        /* Boot-time savearea initialization */
 
 
 #endif /* _PPC_SAVEAREA_H_ */
+
+#endif /* XNU_KERNEL_PRIVATE */