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ANDROID: vendor_hooks: add hooks in mem_cgroup subsystem

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Add hooks to tune memory policy based on mem_cgroup.

Bug: 192052083

Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: Ica1a5409eed86fbd466edd2c7557f94972a40175
(cherry picked from commit 1cdcf76b15)
This commit is contained in:
Liujie Xie
2021-07-03 12:09:04 +08:00
committed by Steve Muckle
parent 6575ef0cd7
commit f50ef59058
2 changed files with 23 additions and 1 deletions
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18
include/trace/hooks/mm.h
View File

@@ -62,7 +62,23 @@ DECLARE_HOOK(android_vh_mmap_region,
DECLARE_HOOK(android_vh_try_to_unmap_one,
TP_PROTO(struct vm_area_struct *vma, struct page *page, unsigned long addr, bool ret),
TP_ARGS(vma, page, addr, ret));
struct mem_cgroup;
DECLARE_HOOK(android_vh_mem_cgroup_alloc,
TP_PROTO(struct mem_cgroup *memcg),
TP_ARGS(memcg));
DECLARE_HOOK(android_vh_mem_cgroup_free,
TP_PROTO(struct mem_cgroup *memcg),
TP_ARGS(memcg));
DECLARE_HOOK(android_vh_mem_cgroup_id_remove,
TP_PROTO(struct mem_cgroup *memcg),
TP_ARGS(memcg));
struct cgroup_subsys_state;
DECLARE_HOOK(android_vh_mem_cgroup_css_online,
TP_PROTO(struct cgroup_subsys_state *css, struct mem_cgroup *memcg),
TP_ARGS(css, memcg));
DECLARE_HOOK(android_vh_mem_cgroup_css_offline,
TP_PROTO(struct cgroup_subsys_state *css, struct mem_cgroup *memcg),
TP_ARGS(css, memcg));
#endif /* _TRACE_HOOK_MM_H */
/* This part must be outside protection */

6
mm/memcontrol.c
View File

@@ -70,6 +70,7 @@
#include <linux/uaccess.h>
#include <trace/events/vmscan.h>
#include <trace/hooks/mm.h>
#include <trace/hooks/cgroup.h>
@@ -5071,6 +5072,7 @@ static DEFINE_IDR(mem_cgroup_idr);
static void mem_cgroup_id_remove(struct mem_cgroup *memcg)
{
if (memcg->id.id > 0) {
trace_android_vh_mem_cgroup_id_remove(memcg);
idr_remove(&mem_cgroup_idr, memcg->id.id);
memcg->id.id = 0;
}
@@ -5158,6 +5160,7 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg)
{
int node;
trace_android_vh_mem_cgroup_free(memcg);
for_each_node(node)
free_mem_cgroup_per_node_info(memcg, node);
free_percpu(memcg->vmstats_percpu);
@@ -5232,6 +5235,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
#endif
idr_replace(&mem_cgroup_idr, memcg, memcg->id.id);
lru_gen_init_memcg(memcg);
trace_android_vh_mem_cgroup_alloc(memcg);
return memcg;
fail:
mem_cgroup_id_remove(memcg);
@@ -5309,6 +5313,7 @@ static int mem_cgroup_css_online(struct cgroup_subsys_state *css)
if (unlikely(mem_cgroup_is_root(memcg)))
queue_delayed_work(system_unbound_wq, &stats_flush_dwork,
2UL*HZ);
trace_android_vh_mem_cgroup_css_online(css, memcg);
return 0;
}
@@ -5317,6 +5322,7 @@ static void mem_cgroup_css_offline(struct cgroup_subsys_state *css)
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
struct mem_cgroup_event *event, *tmp;
trace_android_vh_mem_cgroup_css_offline(css, memcg);
/*
* Unregister events and notify userspace.
* Notify userspace about cgroup removing only after rmdir of cgroup