From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Allow calling inc/dec_mm_counter_fast() from other files, not just memory.c
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
include/linux/mm.h | 10 ++++++++++
mm/memory.c | 7 +------
2 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 17b27cd..ad8d314 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1082,6 +1082,16 @@ static inline void inc_mm_counter(struct mm_struct *mm, int member)
atomic_long_inc(&mm->rss_stat.count[member]);
}
+#if defined(SPLIT_RSS_COUNTING)
+extern void add_mm_counter_fast(struct mm_struct *mm, int member, int val);
+
+#define inc_mm_counter_fast(mm, member) add_mm_counter_fast(mm, member, 1)
+#define dec_mm_counter_fast(mm, member) add_mm_counter_fast(mm, member, -1)
+#else
+#define inc_mm_counter_fast(mm, member) inc_mm_counter(mm, member)
+#define dec_mm_counter_fast(mm, member) inc_mm_counter_fast(mm, member)
+#endif
+
static inline void dec_mm_counter(struct mm_struct *mm, int member)
{
atomic_long_dec(&mm->rss_stat.count[member]);
diff --git a/mm/memory.c b/mm/memory.c
index fa2f04e..89d8401 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -138,7 +138,7 @@ static void __sync_task_rss_stat(struct task_struct *task, struct mm_struct *mm)
task->rss_stat.events = 0;
}
-static void add_mm_counter_fast(struct mm_struct *mm, int member, int val)
+void add_mm_counter_fast(struct mm_struct *mm, int member, int val)
{
struct task_struct *task = current;
@@ -147,8 +147,6 @@ static void add_mm_counter_fast(struct mm_struct *mm, int member, int val)
else
add_mm_counter(mm, member, val);
}
-#define inc_mm_counter_fast(mm, member) add_mm_counter_fast(mm, member, 1)
-#define dec_mm_counter_fast(mm, member) add_mm_counter_fast(mm, member, -1)
/* sync counter once per 64 page faults */
#define TASK_RSS_EVENTS_THRESH (64)
@@ -184,9 +182,6 @@ void sync_mm_rss(struct task_struct *task, struct mm_struct *mm)
}
#else /* SPLIT_RSS_COUNTING */
-#define inc_mm_counter_fast(mm, member) inc_mm_counter(mm, member)
-#define dec_mm_counter_fast(mm, member) dec_mm_counter(mm, member)
-
static void check_sync_rss_stat(struct task_struct *task)
{
}
--
1.7.7.6
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