From: Seth Jennings <sjenning@linux.vnet.ibm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Nitin Gupta <ngupta@vflare.org>,
Robert Jennings <rcj@linux.vnet.ibm.com>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH 1/5] staging: zsmalloc: move object/handle masking defines
Date: Mon, 5 Mar 2012 11:33:20 -0600 [thread overview]
Message-ID: <1330968804-8098-2-git-send-email-sjenning@linux.vnet.ibm.com> (raw)
In-Reply-To: <1330968804-8098-1-git-send-email-sjenning@linux.vnet.ibm.com>
This patch moves the definitions of _PFN_BITS, OBJ_INDEX_BITS
and OBJ_INDEX_MASK from zsmalloc-main.c to zsmalloc_int.h
They will be needed to determine ZS_MIN_ALLOC_SIZE in the next
patch
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
---
drivers/staging/zsmalloc/zsmalloc-main.c | 12 ------------
drivers/staging/zsmalloc/zsmalloc_int.h | 12 ++++++++++++
2 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c
index 455fc2f..240bcbf 100644
--- a/drivers/staging/zsmalloc/zsmalloc-main.c
+++ b/drivers/staging/zsmalloc/zsmalloc-main.c
@@ -40,18 +40,6 @@
#define CLASS_IDX_MASK ((1 << CLASS_IDX_BITS) - 1)
#define FULLNESS_MASK ((1 << FULLNESS_BITS) - 1)
-/*
- * Object location (<PFN>, <obj_idx>) is encoded as
- * as single (void *) handle value.
- *
- * Note that object index <obj_idx> is relative to system
- * page <PFN> it is stored in, so for each sub-page belonging
- * to a zspage, obj_idx starts with 0.
- */
-#define _PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT)
-#define OBJ_INDEX_BITS (BITS_PER_LONG - _PFN_BITS)
-#define OBJ_INDEX_MASK ((_AC(1, UL) << OBJ_INDEX_BITS) - 1)
-
/* per-cpu VM mapping areas for zspage accesses that cross page boundaries */
static DEFINE_PER_CPU(struct mapping_area, zs_map_area);
diff --git a/drivers/staging/zsmalloc/zsmalloc_int.h b/drivers/staging/zsmalloc/zsmalloc_int.h
index 354a020..e06e142 100644
--- a/drivers/staging/zsmalloc/zsmalloc_int.h
+++ b/drivers/staging/zsmalloc/zsmalloc_int.h
@@ -25,6 +25,18 @@
*/
#define ZS_ALIGN 8
+/*
+ * Object location (<PFN>, <obj_idx>) is encoded as
+ * as single (void *) handle value.
+ *
+ * Note that object index <obj_idx> is relative to system
+ * page <PFN> it is stored in, so for each sub-page belonging
+ * to a zspage, obj_idx starts with 0.
+ */
+#define _PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT)
+#define OBJ_INDEX_BITS (BITS_PER_LONG - _PFN_BITS)
+#define OBJ_INDEX_MASK ((_AC(1, UL) << OBJ_INDEX_BITS) - 1)
+
/* ZS_MIN_ALLOC_SIZE must be multiple of ZS_ALIGN */
#define ZS_MIN_ALLOC_SIZE 32
#define ZS_MAX_ALLOC_SIZE PAGE_SIZE
--
1.7.5.4
next prev parent reply other threads:[~2012-03-05 17:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-05 17:33 [PATCH 0/5] staging: zsmalloc: remove SPARSEMEM dependency Seth Jennings
2012-03-05 17:33 ` Seth Jennings [this message]
2012-03-05 17:33 ` [PATCH 2/5] staging: zsmalloc: add ZS_MAX_PAGES_PER_ZSPAGE Seth Jennings
2012-03-05 17:33 ` [PATCH 3/5] staging: zsmalloc: calculate MAX_PHYSMEM_BITS if not defined Seth Jennings
2012-03-05 17:33 ` [PATCH 4/5] staging: zsmalloc: change ZS_MIN_ALLOC_SIZE Seth Jennings
2012-03-05 17:33 ` [PATCH 5/5] staging: zsmalloc: remove SPARSEMEM dep from Kconfig Seth Jennings
2012-03-05 18:07 ` [PATCH 0/5] staging: zsmalloc: remove SPARSEMEM dependency Nitin Gupta
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