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mm: clean up mm_counter

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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>
This commit is contained in:
KAMEZAWA Hiroyuki 2010-03-05 13:41:39 -08:00 • committed by Linus Torvalds
parent 19b629f581
commit d559db086f
12 changed files with 174 additions and 101 deletions
Download patch file Download diff file Expand all files Collapse all files

104
include/linux/mm.h
View file

@ -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.