summaryrefslogtreecommitdiff
path: root/mm/thrash.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/thrash.c')
-rw-r--r--mm/thrash.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/thrash.c b/mm/thrash.c
index 6cdf86511385..17d9e29e4c9c 100644
--- a/mm/thrash.c
+++ b/mm/thrash.c
@@ -23,6 +23,8 @@
#include <linux/swap.h>
#include <linux/memcontrol.h>
+#include <trace/events/vmscan.h>
+
static DEFINE_SPINLOCK(swap_token_lock);
struct mm_struct *swap_token_mm;
struct mem_cgroup *swap_token_memcg;
@@ -49,6 +51,7 @@ static struct mem_cgroup *swap_token_memcg_from_mm(struct mm_struct *mm)
void grab_swap_token(struct mm_struct *mm)
{
int current_interval;
+ unsigned int old_prio = mm->token_priority;
global_faults++;
@@ -63,7 +66,7 @@ void grab_swap_token(struct mm_struct *mm)
if (mm == swap_token_mm) {
mm->token_priority += 2;
- goto out;
+ goto update_priority;
}
if (current_interval < mm->last_interval)
@@ -77,6 +80,9 @@ void grab_swap_token(struct mm_struct *mm)
if (mm->token_priority > swap_token_mm->token_priority)
goto replace_token;
+update_priority:
+ trace_update_swap_token_priority(mm, old_prio);
+
out:
mm->faultstamp = global_faults;
mm->last_interval = current_interval;
@@ -85,6 +91,7 @@ out:
replace_token:
mm->token_priority += 2;
+ trace_replace_swap_token(swap_token_mm, mm);
swap_token_mm = mm;
swap_token_memcg = swap_token_memcg_from_mm(mm);
goto out;
@@ -95,6 +102,7 @@ void __put_swap_token(struct mm_struct *mm)
{
spin_lock(&swap_token_lock);
if (likely(mm == swap_token_mm)) {
+ trace_put_swap_token(swap_token_mm);
swap_token_mm = NULL;
swap_token_memcg = NULL;
}
@@ -118,6 +126,7 @@ void disable_swap_token(struct mem_cgroup *memcg)
if (match_memcg(memcg, swap_token_memcg)) {
spin_lock(&swap_token_lock);
if (match_memcg(memcg, swap_token_memcg)) {
+ trace_disable_swap_token(swap_token_mm);
swap_token_mm = NULL;
swap_token_memcg = NULL;
}