From: Sha Zhengju <handai.szj@xxxxxxxxxx>
While memcg oom happening, the dump info is limited, so add this
to provide memcg page stat.
Signed-off-by: Sha Zhengju <handai.szj@xxxxxxxxxx>
---
mm/memcontrol.c | 42 ++++++++++++++++++++++++++++++++++--------
1 files changed, 34 insertions(+), 8 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 8493119..3ed41e9 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -101,6 +101,14 @@ static const char * const mem_cgroup_events_names[] = {
"pgmajfault",
};
+static const char * const mem_cgroup_lru_names[] = {
+ "inactive_anon",
+ "active_anon",
+ "inactive_file",
+ "active_file",
+ "unevictable",
+};
+
/*
* Per memcg event counter is incremented at every pagein/pageout. With THP,
* it will be incremated by the number of pages. This counter is used for
@@ -1358,6 +1366,30 @@ static void move_unlock_mem_cgroup(struct mem_cgroup *memcg,
spin_unlock_irqrestore(&memcg->move_lock, *flags);
}
+#define K(x) ((x) << (PAGE_SHIFT-10))
+static void mem_cgroup_print_oom_stat(struct mem_cgroup *memcg)
+{
+ int i;
+
+ printk(KERN_INFO "Memory cgroup stat:\n");
+ for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
+ if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
+ continue;
+ printk(KERN_CONT "%s:%ldKB ", mem_cgroup_stat_names[i],
+ K(mem_cgroup_read_stat(memcg, i)));
+ }
+
+ for (i = 0; i < MEM_CGROUP_EVENTS_NSTATS; i++)
+ printk(KERN_CONT "%s:%lu ", mem_cgroup_events_names[i],
+ mem_cgroup_read_events(memcg, i));
+
+ for (i = 0; i < NR_LRU_LISTS; i++)
+ printk(KERN_CONT "%s:%luKB ", mem_cgroup_lru_names[i],
+ K(mem_cgroup_nr_lru_pages(memcg, BIT(i))));
+ printk(KERN_CONT "\n");
+
+}
+
/**
* mem_cgroup_print_oom_info: Called from OOM with tasklist_lock held in read mode.
* @memcg: The memory cgroup that went over limit
@@ -1422,6 +1454,8 @@ done:
res_counter_read_u64(&memcg->memsw, RES_USAGE) >> 10,
res_counter_read_u64(&memcg->memsw, RES_LIMIT) >> 10,
res_counter_read_u64(&memcg->memsw, RES_FAILCNT));
+
+ mem_cgroup_print_oom_stat(memcg);
}
/*
@@ -4043,14 +4077,6 @@ static int mem_control_numa_stat_show(struct cgroup *cont, struct cftype *cft,
}
#endif /* CONFIG_NUMA */
-static const char * const mem_cgroup_lru_names[] = {
- "inactive_anon",
- "active_anon",
- "inactive_file",
- "active_file",
- "unevictable",
-};
-
static inline void mem_cgroup_lru_names_not_uptodate(void)
{
BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_lru_names) != NR_LRU_LISTS);
--
1.7.1
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