xnu-4570.20.62.tar.gz

[apple/xnu.git] / osfmk / kern / hibernate.c

diff --git a/osfmk/kern/hibernate.c b/osfmk/kern/hibernate.c
index 431c4795cfe0008c9cc73a3b50d92626b46d4bc6..0bbc73d49375063e00759a9a9ff6a46969911f15 100644 (file)
--- a/osfmk/kern/hibernate.c
+++ b/osfmk/kern/hibernate.c
@@ -34,74 +34,101 @@
 #include <mach/machine.h>
 #include <mach/processor_info.h>
 #include <mach/mach_types.h>
-#include <default_pager/default_pager_internal.h>
 #include <IOKit/IOPlatformExpert.h>
 
 #include <IOKit/IOHibernatePrivate.h>
 #include <vm/vm_page.h>
 #include <vm/vm_pageout.h>
 #include <vm/vm_purgeable_internal.h>
+#include <vm/vm_compressor.h>
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
+boolean_t      need_to_unlock_decompressor = FALSE;
+
 kern_return_t 
-hibernate_setup(IOHibernateImageHeader * header,
-                        uint32_t  free_page_ratio,
-                        uint32_t  free_page_time,
-                        boolean_t vmflush,
-                       hibernate_page_list_t ** page_list_ret,
-                       hibernate_page_list_t ** page_list_wired_ret,
-                       hibernate_page_list_t ** page_list_pal_ret)
+hibernate_alloc_page_lists(
+               hibernate_page_list_t ** page_list_ret,
+               hibernate_page_list_t ** page_list_wired_ret,
+               hibernate_page_list_t ** page_list_pal_ret)
 {
+    kern_return_t      retval = KERN_SUCCESS;
+
     hibernate_page_list_t * page_list = NULL;
     hibernate_page_list_t * page_list_wired = NULL;
     hibernate_page_list_t * page_list_pal = NULL;
-    uint32_t               gobble_count;
-
-    *page_list_ret       = NULL;
-    *page_list_wired_ret = NULL;
-       *page_list_pal_ret    = NULL;
-    
-    if (vmflush && dp_isssd)
-        hibernate_flush_memory();
 
     page_list = hibernate_page_list_allocate(TRUE);
-    if (!page_list)
-        return (KERN_RESOURCE_SHORTAGE);
+    if (!page_list) {
+
+           retval = KERN_RESOURCE_SHORTAGE;
+           goto done;
+    }
     page_list_wired = hibernate_page_list_allocate(FALSE);
     if (!page_list_wired)
     {
-        kfree(page_list, page_list->list_size);
-        return (KERN_RESOURCE_SHORTAGE);
+           kfree(page_list, page_list->list_size);
+
+           retval = KERN_RESOURCE_SHORTAGE;
+           goto done;
     }
     page_list_pal = hibernate_page_list_allocate(FALSE);
     if (!page_list_pal)
     {
-        kfree(page_list, page_list->list_size);
-        kfree(page_list_wired, page_list_wired->list_size);
-        return (KERN_RESOURCE_SHORTAGE);
+           kfree(page_list, page_list->list_size);
+           kfree(page_list_wired, page_list_wired->list_size);
+
+           retval = KERN_RESOURCE_SHORTAGE;
+           goto done;
     }
+    *page_list_ret        = page_list;
+    *page_list_wired_ret  = page_list_wired;
+    *page_list_pal_ret    = page_list_pal;
+
+done:
+    return (retval);
 
-    // pages we could force out to reduce hibernate image size
-    gobble_count = (uint32_t)((((uint64_t) page_list->page_count) * ((uint64_t) free_page_ratio)) / 100);
+}
+
+extern int sync_internal(void);
+
+kern_return_t 
+hibernate_setup(IOHibernateImageHeader * header,
+                        boolean_t vmflush,
+                       hibernate_page_list_t * page_list __unused,
+                       hibernate_page_list_t * page_list_wired __unused,
+                       hibernate_page_list_t * page_list_pal __unused)
+{
+    kern_return_t      retval = KERN_SUCCESS;
+
+    hibernate_create_paddr_map();
+
+    hibernate_reset_stats();
+    
+    if (vmflush && VM_CONFIG_COMPRESSOR_IS_PRESENT) {
+           
+           sync_internal();
+
+           vm_decompressor_lock();
+           need_to_unlock_decompressor = TRUE;
+
+           hibernate_flush_memory();
+    }
 
     // no failures hereafter
 
     hibernate_processor_setup(header);
 
-    if (gobble_count)
-       hibernate_gobble_pages(gobble_count, free_page_time);
-
     HIBLOG("hibernate_alloc_pages act %d, inact %d, anon %d, throt %d, spec %d, wire %d, wireinit %d\n",
            vm_page_active_count, vm_page_inactive_count, 
            vm_page_anonymous_count,  vm_page_throttled_count, vm_page_speculative_count,
            vm_page_wire_count, vm_page_wire_count_initial);
 
-    *page_list_ret        = page_list;
-    *page_list_wired_ret  = page_list_wired;
-    *page_list_pal_ret    = page_list_pal;
-
-    return (KERN_SUCCESS);
+    if (retval != KERN_SUCCESS && need_to_unlock_decompressor == TRUE) {
+           need_to_unlock_decompressor = FALSE;
+           vm_decompressor_unlock();
+    }
+    return (retval);
 }
 
 kern_return_t 
@@ -118,6 +145,12 @@ hibernate_teardown(hibernate_page_list_t * page_list,
     if (page_list_pal)
         kfree(page_list_pal, page_list_pal->list_size);
 
+    if (VM_CONFIG_COMPRESSOR_IS_PRESENT) {
+           if (need_to_unlock_decompressor == TRUE) {
+                   need_to_unlock_decompressor = FALSE;
+                   vm_decompressor_unlock();
+           }
+           vm_compressor_delay_trim();
+    }
     return (KERN_SUCCESS);
 }
-