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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2010-03-05 13:41:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:26:23 -0800
commitd559db086ff5be9bcc259e5aa50bf3d881eaf1d1 (patch)
treeaa968c8a4093234e4623a34c0415bf9d8683671c /include
parent19b629f581320999ddb9f6597051b79cdb53459c (diff)
downloadop-kernel-dev-d559db086ff5be9bcc259e5aa50bf3d881eaf1d1.zip
op-kernel-dev-d559db086ff5be9bcc259e5aa50bf3d881eaf1d1.tar.gz
mm: clean up mm_counter
Presently, per-mm statistics counter is defined by macro in sched.h This patch modifies it to - defined in mm.h as inlinf functions - use array instead of macro's name creation. This patch is for reducing patch size in future patch to modify implementation of per-mm counter. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h104
-rw-r--r--include/linux/mm_types.h33
-rw-r--r--include/linux/sched.h54
3 files changed, 126 insertions, 65 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 90957f1..2124cdb 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -870,6 +870,110 @@ extern int mprotect_fixup(struct vm_area_struct *vma,
*/
int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
+/*
+ * per-process(per-mm_struct) statistics.
+ */
+#if USE_SPLIT_PTLOCKS
+/*
+ * The mm counters are not protected by its page_table_lock,
+ * so must be incremented atomically.
+ */
+static inline void set_mm_counter(struct mm_struct *mm, int member, long value)
+{
+ atomic_long_set(&mm->rss_stat.count[member], value);
+}
+
+static inline unsigned long get_mm_counter(struct mm_struct *mm, int member)
+{
+ return (unsigned long)atomic_long_read(&mm->rss_stat.count[member]);
+}
+
+static inline void add_mm_counter(struct mm_struct *mm, int member, long value)
+{
+ atomic_long_add(value, &mm->rss_stat.count[member]);
+}
+
+static inline void inc_mm_counter(struct mm_struct *mm, int member)
+{
+ atomic_long_inc(&mm->rss_stat.count[member]);
+}
+
+static inline void dec_mm_counter(struct mm_struct *mm, int member)
+{
+ atomic_long_dec(&mm->rss_stat.count[member]);
+}
+
+#else /* !USE_SPLIT_PTLOCKS */
+/*
+ * The mm counters are protected by its page_table_lock,
+ * so can be incremented directly.
+ */
+static inline void set_mm_counter(struct mm_struct *mm, int member, long value)
+{
+ mm->rss_stat.count[member] = value;
+}
+
+static inline unsigned long get_mm_counter(struct mm_struct *mm, int member)
+{
+ return mm->rss_stat.count[member];
+}
+
+static inline void add_mm_counter(struct mm_struct *mm, int member, long value)
+{
+ mm->rss_stat.count[member] += value;
+}
+
+static inline void inc_mm_counter(struct mm_struct *mm, int member)
+{
+ mm->rss_stat.count[member]++;
+}
+
+static inline void dec_mm_counter(struct mm_struct *mm, int member)
+{
+ mm->rss_stat.count[member]--;
+}
+
+#endif /* !USE_SPLIT_PTLOCKS */
+
+static inline unsigned long get_mm_rss(struct mm_struct *mm)
+{
+ return get_mm_counter(mm, MM_FILEPAGES) +
+ get_mm_counter(mm, MM_ANONPAGES);
+}
+
+static inline unsigned long get_mm_hiwater_rss(struct mm_struct *mm)
+{
+ return max(mm->hiwater_rss, get_mm_rss(mm));
+}
+
+static inline unsigned long get_mm_hiwater_vm(struct mm_struct *mm)
+{
+ return max(mm->hiwater_vm, mm->total_vm);
+}
+
+static inline void update_hiwater_rss(struct mm_struct *mm)
+{
+ unsigned long _rss = get_mm_rss(mm);
+
+ if ((mm)->hiwater_rss < _rss)
+ (mm)->hiwater_rss = _rss;
+}
+
+static inline void update_hiwater_vm(struct mm_struct *mm)
+{
+ if (mm->hiwater_vm < mm->total_vm)
+ mm->hiwater_vm = mm->total_vm;
+}
+
+static inline void setmax_mm_hiwater_rss(unsigned long *maxrss,
+ struct mm_struct *mm)
+{
+ unsigned long hiwater_rss = get_mm_hiwater_rss(mm);
+
+ if (*maxrss < hiwater_rss)
+ *maxrss = hiwater_rss;
+}
+
/*
* A callback you can register to apply pressure to ageable caches.
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 36f9627..e1ca64b 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -24,12 +24,6 @@ struct address_space;
#define USE_SPLIT_PTLOCKS (NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS)
-#if USE_SPLIT_PTLOCKS
-typedef atomic_long_t mm_counter_t;
-#else /* !USE_SPLIT_PTLOCKS */
-typedef unsigned long mm_counter_t;
-#endif /* !USE_SPLIT_PTLOCKS */
-
/*
* Each physical page in the system has a struct page associated with
* it to keep track of whatever it is we are using the page for at the
@@ -201,6 +195,22 @@ struct core_state {
struct completion startup;
};
+enum {
+ MM_FILEPAGES,
+ MM_ANONPAGES,
+ NR_MM_COUNTERS
+};
+
+#if USE_SPLIT_PTLOCKS
+struct mm_rss_stat {
+ atomic_long_t count[NR_MM_COUNTERS];
+};
+#else /* !USE_SPLIT_PTLOCKS */
+struct mm_rss_stat {
+ unsigned long count[NR_MM_COUNTERS];
+};
+#endif /* !USE_SPLIT_PTLOCKS */
+
struct mm_struct {
struct vm_area_struct * mmap; /* list of VMAs */
struct rb_root mm_rb;
@@ -227,11 +237,6 @@ struct mm_struct {
* by mmlist_lock
*/
- /* Special counters, in some configurations protected by the
- * page_table_lock, in other configurations by being atomic.
- */
- mm_counter_t _file_rss;
- mm_counter_t _anon_rss;
unsigned long hiwater_rss; /* High-watermark of RSS usage */
unsigned long hiwater_vm; /* High-water virtual memory usage */
@@ -244,6 +249,12 @@ struct mm_struct {
unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */
+ /*
+ * Special counters, in some configurations protected by the
+ * page_table_lock, in other configurations by being atomic.
+ */
+ struct mm_rss_stat rss_stat;
+
struct linux_binfmt *binfmt;
cpumask_t cpu_vm_mask;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4b1753f..cbeafa4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -396,60 +396,6 @@ extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);
static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
#endif
-#if USE_SPLIT_PTLOCKS
-/*
- * The mm counters are not protected by its page_table_lock,
- * so must be incremented atomically.
- */
-#define set_mm_counter(mm, member, value) atomic_long_set(&(mm)->_##member, value)
-#define get_mm_counter(mm, member) ((unsigned long)atomic_long_read(&(mm)->_##member))
-#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member)
-#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member)
-#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member)
-
-#else /* !USE_SPLIT_PTLOCKS */
-/*
- * The mm counters are protected by its page_table_lock,
- * so can be incremented directly.
- */
-#define set_mm_counter(mm, member, value) (mm)->_##member = (value)
-#define get_mm_counter(mm, member) ((mm)->_##member)
-#define add_mm_counter(mm, member, value) (mm)->_##member += (value)
-#define inc_mm_counter(mm, member) (mm)->_##member++
-#define dec_mm_counter(mm, member) (mm)->_##member--
-
-#endif /* !USE_SPLIT_PTLOCKS */
-
-#define get_mm_rss(mm) \
- (get_mm_counter(mm, file_rss) + get_mm_counter(mm, anon_rss))
-#define update_hiwater_rss(mm) do { \
- unsigned long _rss = get_mm_rss(mm); \
- if ((mm)->hiwater_rss < _rss) \
- (mm)->hiwater_rss = _rss; \
-} while (0)
-#define update_hiwater_vm(mm) do { \
- if ((mm)->hiwater_vm < (mm)->total_vm) \
- (mm)->hiwater_vm = (mm)->total_vm; \
-} while (0)
-
-static inline unsigned long get_mm_hiwater_rss(struct mm_struct *mm)
-{
- return max(mm->hiwater_rss, get_mm_rss(mm));
-}
-
-static inline void setmax_mm_hiwater_rss(unsigned long *maxrss,
- struct mm_struct *mm)
-{
- unsigned long hiwater_rss = get_mm_hiwater_rss(mm);
-
- if (*maxrss < hiwater_rss)
- *maxrss = hiwater_rss;
-}
-
-static inline unsigned long get_mm_hiwater_vm(struct mm_struct *mm)
-{
- return max(mm->hiwater_vm, mm->total_vm);
-}
extern void set_dumpable(struct mm_struct *mm, int value);
extern int get_dumpable(struct mm_struct *mm);
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