Changeset 53 for trunk/kernel/mm/ppm.h

Timestamp:

Jun 26, 2017, 4:22:00 PM (7 years ago)

Author:

alain

Message:

Compilation OK pout TSAR

File:

• trunk/kernel/mm/ppm.h (modified) (4 diffs)

trunk/kernel/mm/ppm.h

@@ -69 +69 @@
 
 /*****************************************************************************************
- * This function initializes a PPM (Physical Pages Manager) in a cluster.
- * The physical memory base address in all clusters is zero.
- * The physical memory size is NOT constrained to be smaller than 4 Gbytes.
- *****************************************************************************************
- * @ ppm          : pointer on physical pages manager.
- * @ pages_nr     : total physical memory size (number of 4 Kbytes pages).
- * @ pages_offset : number of pages already allocated in this physical memory.
- ****************************************************************************************/
-void ppm_init( ppm_t    * ppm,
-               uint32_t   pages_nr,
-                   uint32_t   pages_offset );
-
-/*****************************************************************************************
  * This is the low-level physical pages allocation function.
  * It allocates N contiguous physical pages. N is a power of 2.
@@ -93 +80 @@
 
 /*****************************************************************************************
- * This is the low-level physical pages release function.
+ * This is the low-level physical pages release function. It takes the lock protecting
+ * the free_list before register the released page in the relevant free_list.
  * In normal use, you do not need to call it directly, as the recommended way to free
  * physical pages is to call the generic allocator defined in kmem.h.
@@ -100 +88 @@
  ****************************************************************************************/
 void ppm_free_pages( page_t * page );
+
+/*****************************************************************************************
+ * This function does the same as the ppm_free_page() function, without taking the lock.
+ * It is used by the hal_ppm_init() function to initialize the pages_tbl[] array, when
+ * there is no concurrent access issue.
+ *****************************************************************************************
+ * @ page         : pointer to the page descriptor to be released
+ ****************************************************************************************/
+void ppm_free_pages_nolock( page_t * page );
 
 /*****************************************************************************************
@@ -170 +167 @@
  *****************************************************************************************
  * @ ppm      : pointer on PPM allocator.
+ * @ return 0 if PPM is OK / return -1 if PPM not consistent.
  ****************************************************************************************/
-void ppm_assert_order( ppm_t * ppm );
+error_t ppm_assert_order( ppm_t * ppm );
 
 #endif  /* _PPM_H_ */