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From: vignesh babu <vignesh.babu@wipro.com>
To: tony.luck@intel.com, rohit.seth@intel.com, kenneth.w.chen@intel.com
Cc: linux-ia64@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Kernel Janitors List <kernel-janitors@lists.osdl.org>
Subject: [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c
Date: Thu, 07 Jun 2007 10:09:46 +0000	[thread overview]
Message-ID: <1181210266.11218.3.camel@merlin.linuxcoe.com> (raw)


Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
--- 
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 1346b7f..d22861c 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/log2.h>
 #include <asm/mman.h>
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
@@ -182,7 +183,7 @@ static int __init hugetlb_setup_sz(char *str)
 		tr_pages = 0x15557000UL;
 
 	size = memparse(str, &str);
-	if (*str || (size & (size-1)) || !(tr_pages & size) ||
+	if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
 		size <= PAGE_SIZE ||
 		size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
 		printk(KERN_WARNING "Invalid huge page size specified\n");

-- 
Vignesh Babu BM 
_____________________________________________________________ 
"Why is it that every time I'm with you, makes me believe in magic?"

_______________________________________________
Kernel-janitors mailing list
Kernel-janitors@lists.linux-foundation.org
https://lists.linux-foundation.org/mailman/listinfo/kernel-janitors

WARNING: multiple messages have this Message-ID (diff)
From: vignesh babu <vignesh.babu@wipro.com>
To: tony.luck@intel.com, rohit.seth@intel.com, kenneth.w.chen@intel.com
Cc: linux-ia64@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Kernel Janitors List <kernel-janitors@lists.osdl.org>
Subject: [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c
Date: Thu, 07 Jun 2007 10:09:46 +0000	[thread overview]
Message-ID: <1181210266.11218.3.camel@merlin.linuxcoe.com> (raw)


Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
--- 
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 1346b7f..d22861c 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/log2.h>
 #include <asm/mman.h>
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
@@ -182,7 +183,7 @@ static int __init hugetlb_setup_sz(char *str)
 		tr_pages = 0x15557000UL;
 
 	size = memparse(str, &str);
-	if (*str || (size & (size-1)) || !(tr_pages & size) ||
+	if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
 		size <= PAGE_SIZE ||
 		size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
 		printk(KERN_WARNING "Invalid huge page size specified\n");

-- 
Vignesh Babu BM 
_____________________________________________________________ 
"Why is it that every time I'm with you, makes me believe in magic?"


WARNING: multiple messages have this Message-ID (diff)
From: vignesh babu <vignesh.babu@wipro.com>
To: tony.luck@intel.com, rohit.seth@intel.com, kenneth.w.chen@intel.com
Cc: linux-ia64@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Kernel Janitors List <kernel-janitors@lists.osdl.org>
Subject: [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c
Date: Thu, 07 Jun 2007 15:27:46 +0530	[thread overview]
Message-ID: <1181210266.11218.3.camel@merlin.linuxcoe.com> (raw)


Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
--- 
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 1346b7f..d22861c 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/log2.h>
 #include <asm/mman.h>
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
@@ -182,7 +183,7 @@ static int __init hugetlb_setup_sz(char *str)
 		tr_pages = 0x15557000UL;
 
 	size = memparse(str, &str);
-	if (*str || (size & (size-1)) || !(tr_pages & size) ||
+	if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
 		size <= PAGE_SIZE ||
 		size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
 		printk(KERN_WARNING "Invalid huge page size specified\n");

-- 
Vignesh Babu BM 
_____________________________________________________________ 
"Why is it that every time I'm with you, makes me believe in magic?"


WARNING: multiple messages have this Message-ID (diff)
From: vignesh babu <vignesh.babu@wipro.com>
To: tony.luck@intel.com, rohit.seth@intel.com, kenneth.w.chen@intel.com
Cc: linux-ia64@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Kernel Janitors List <kernel-janitors@lists.osdl.org>
Subject: [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c
Date: Thu, 07 Jun 2007 15:27:46 +0530	[thread overview]
Message-ID: <1181210266.11218.3.camel@merlin.linuxcoe.com> (raw)

Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
--- 
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 1346b7f..d22861c 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/log2.h>
 #include <asm/mman.h>
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
@@ -182,7 +183,7 @@ static int __init hugetlb_setup_sz(char *str)
 		tr_pages = 0x15557000UL;
 
 	size = memparse(str, &str);
-	if (*str || (size & (size-1)) || !(tr_pages & size) ||
+	if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
 		size <= PAGE_SIZE ||
 		size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
 		printk(KERN_WARNING "Invalid huge page size specified\n");

-- 
Vignesh Babu BM 
_____________________________________________________________ 
"Why is it that every time I'm with you, makes me believe in magic?"

--
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             reply	other threads:[~2007-06-07 10:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-07  9:57 vignesh babu [this message]
2007-06-07 10:09 ` [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c vignesh babu
2007-06-07 10:09 ` [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c vignesh babu
2007-06-07  9:57 ` [KJ][PATCH]is_power_of_2-ia64/mm/hugetlbpage.c vignesh babu

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