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authorPaul Mundt <lethal@linux-sh.org>2011-01-13 01:06:28 -0500
committerPaul Mundt <lethal@linux-sh.org>2011-01-13 01:06:28 -0500
commitf43dc23d5ea91fca257be02138a255f02d98e806 (patch)
treeb29722f6e965316e90ac97abf79923ced250dc21 /fs/proc/page.c
parentf8e53553f452dcbf67cb89c8cba63a1cd6eb4cc0 (diff)
parent4162cf64973df51fc885825bc9ca4d055891c49f (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework
Conflicts: arch/sh/kernel/cpu/sh2/setup-sh7619.c arch/sh/kernel/cpu/sh2a/setup-mxg.c arch/sh/kernel/cpu/sh2a/setup-sh7201.c arch/sh/kernel/cpu/sh2a/setup-sh7203.c arch/sh/kernel/cpu/sh2a/setup-sh7206.c arch/sh/kernel/cpu/sh3/setup-sh7705.c arch/sh/kernel/cpu/sh3/setup-sh770x.c arch/sh/kernel/cpu/sh3/setup-sh7710.c arch/sh/kernel/cpu/sh3/setup-sh7720.c arch/sh/kernel/cpu/sh4/setup-sh4-202.c arch/sh/kernel/cpu/sh4/setup-sh7750.c arch/sh/kernel/cpu/sh4/setup-sh7760.c arch/sh/kernel/cpu/sh4a/setup-sh7343.c arch/sh/kernel/cpu/sh4a/setup-sh7366.c arch/sh/kernel/cpu/sh4a/setup-sh7722.c arch/sh/kernel/cpu/sh4a/setup-sh7723.c arch/sh/kernel/cpu/sh4a/setup-sh7724.c arch/sh/kernel/cpu/sh4a/setup-sh7763.c arch/sh/kernel/cpu/sh4a/setup-sh7770.c arch/sh/kernel/cpu/sh4a/setup-sh7780.c arch/sh/kernel/cpu/sh4a/setup-sh7785.c arch/sh/kernel/cpu/sh4a/setup-sh7786.c arch/sh/kernel/cpu/sh4a/setup-shx3.c arch/sh/kernel/cpu/sh5/setup-sh5.c drivers/serial/sh-sci.c drivers/serial/sh-sci.h include/linux/serial_sci.h
Diffstat (limited to 'fs/proc/page.c')
-rw-r--r--fs/proc/page.c51
1 files changed, 11 insertions, 40 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 2707c6c7a20f..3b8b45660331 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -2,11 +2,13 @@
2#include <linux/compiler.h> 2#include <linux/compiler.h>
3#include <linux/fs.h> 3#include <linux/fs.h>
4#include <linux/init.h> 4#include <linux/init.h>
5#include <linux/ksm.h>
5#include <linux/mm.h> 6#include <linux/mm.h>
6#include <linux/mmzone.h> 7#include <linux/mmzone.h>
7#include <linux/proc_fs.h> 8#include <linux/proc_fs.h>
8#include <linux/seq_file.h> 9#include <linux/seq_file.h>
9#include <linux/hugetlb.h> 10#include <linux/hugetlb.h>
11#include <linux/kernel-page-flags.h>
10#include <asm/uaccess.h> 12#include <asm/uaccess.h>
11#include "internal.h" 13#include "internal.h"
12 14
@@ -70,49 +72,12 @@ static const struct file_operations proc_kpagecount_operations = {
70 * physical page flags. 72 * physical page flags.
71 */ 73 */
72 74
73/* These macros are used to decouple internal flags from exported ones */
74
75#define KPF_LOCKED 0
76#define KPF_ERROR 1
77#define KPF_REFERENCED 2
78#define KPF_UPTODATE 3
79#define KPF_DIRTY 4
80#define KPF_LRU 5
81#define KPF_ACTIVE 6
82#define KPF_SLAB 7
83#define KPF_WRITEBACK 8
84#define KPF_RECLAIM 9
85#define KPF_BUDDY 10
86
87/* 11-20: new additions in 2.6.31 */
88#define KPF_MMAP 11
89#define KPF_ANON 12
90#define KPF_SWAPCACHE 13
91#define KPF_SWAPBACKED 14
92#define KPF_COMPOUND_HEAD 15
93#define KPF_COMPOUND_TAIL 16
94#define KPF_HUGE 17
95#define KPF_UNEVICTABLE 18
96#define KPF_NOPAGE 20
97
98/* kernel hacking assistances
99 * WARNING: subject to change, never rely on them!
100 */
101#define KPF_RESERVED 32
102#define KPF_MLOCKED 33
103#define KPF_MAPPEDTODISK 34
104#define KPF_PRIVATE 35
105#define KPF_PRIVATE_2 36
106#define KPF_OWNER_PRIVATE 37
107#define KPF_ARCH 38
108#define KPF_UNCACHED 39
109
110static inline u64 kpf_copy_bit(u64 kflags, int ubit, int kbit) 75static inline u64 kpf_copy_bit(u64 kflags, int ubit, int kbit)
111{ 76{
112 return ((kflags >> kbit) & 1) << ubit; 77 return ((kflags >> kbit) & 1) << ubit;
113} 78}
114 79
115static u64 get_uflags(struct page *page) 80u64 stable_page_flags(struct page *page)
116{ 81{
117 u64 k; 82 u64 k;
118 u64 u; 83 u64 u;
@@ -137,6 +102,8 @@ static u64 get_uflags(struct page *page)
137 u |= 1 << KPF_MMAP; 102 u |= 1 << KPF_MMAP;
138 if (PageAnon(page)) 103 if (PageAnon(page))
139 u |= 1 << KPF_ANON; 104 u |= 1 << KPF_ANON;
105 if (PageKsm(page))
106 u |= 1 << KPF_KSM;
140 107
141 /* 108 /*
142 * compound pages: export both head/tail info 109 * compound pages: export both head/tail info
@@ -175,7 +142,11 @@ static u64 get_uflags(struct page *page)
175 u |= kpf_copy_bit(k, KPF_UNEVICTABLE, PG_unevictable); 142 u |= kpf_copy_bit(k, KPF_UNEVICTABLE, PG_unevictable);
176 u |= kpf_copy_bit(k, KPF_MLOCKED, PG_mlocked); 143 u |= kpf_copy_bit(k, KPF_MLOCKED, PG_mlocked);
177 144
178#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR 145#ifdef CONFIG_MEMORY_FAILURE
146 u |= kpf_copy_bit(k, KPF_HWPOISON, PG_hwpoison);
147#endif
148
149#ifdef CONFIG_ARCH_USES_PG_UNCACHED
179 u |= kpf_copy_bit(k, KPF_UNCACHED, PG_uncached); 150 u |= kpf_copy_bit(k, KPF_UNCACHED, PG_uncached);
180#endif 151#endif
181 152
@@ -209,7 +180,7 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf,
209 else 180 else
210 ppage = NULL; 181 ppage = NULL;
211 182
212 if (put_user(get_uflags(ppage), out)) { 183 if (put_user(stable_page_flags(ppage), out)) {
213 ret = -EFAULT; 184 ret = -EFAULT;
214 break; 185 break;
215 } 186 }