staging: zsmalloc: add ZS_MAX_PAGES_PER_ZSPAGE

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / staging / zsmalloc / zsmalloc_int.h

diff --git a/drivers/staging/zsmalloc/zsmalloc_int.h b/drivers/staging/zsmalloc/zsmalloc_int.h
index e06e142..4d66d2d 100644 (file)
--- a/drivers/staging/zsmalloc/zsmalloc_int.h
+++ b/drivers/staging/zsmalloc/zsmalloc_int.h
@@ -26,6 +26,13 @@
 #define ZS_ALIGN               8
 
 /*
+ * A single 'zspage' is composed of up to 2^N discontiguous 0-order (single)
+ * pages. ZS_MAX_ZSPAGE_ORDER defines upper limit on N.
+ */
+#define ZS_MAX_ZSPAGE_ORDER 2
+#define ZS_MAX_PAGES_PER_ZSPAGE (_AC(1, UL) << ZS_MAX_ZSPAGE_ORDER)
+
+/*
  * Object location (<PFN>, <obj_idx>) is encoded as
  * as single (void *) handle value.
  *
@@ -59,12 +66,6 @@
                                        ZS_SIZE_CLASS_DELTA + 1)
 
 /*
- * A single 'zspage' is composed of N discontiguous 0-order (single) pages.
- * This defines upper limit on N.
- */
-static const int max_zspage_order = 4;
-
-/*
  * We do not maintain any list for completely empty or full pages
  */
 enum fullness_group {