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ANDROID: mm: add vendor hook to add folio to specific memcg

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Add vendor hook when folio charges memcg. This is to manage some
specific folios in separate memcg for more accurate memory reclamation.

Bug: 423742169

Bug: 373540729
Change-Id: I11b1fca279ea9e9e8be1f789bdf1f9d7c1bf001f
Signed-off-by: Jianan Huang <huangjianan@xiaomi.com>
(cherry picked from commit 6e2565c513127c425ddfb84e473dba8161154036)
(cherry picked from commit f2a18f1865797cb396ba90f89ddb3df8065b29e2)
This commit is contained in:
Jianan Huang
2024-10-15 14:32:06 +08:00
committed by Shijie Sun
parent 72ccaf358b
commit 1da7155f07
4 changed files with 11 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
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@@ -562,3 +562,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_early_resume_begin);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_use_amu_fie);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_tsk_need_resched_lazy);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pr_set_vma_name_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_charge);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_add_folio);

7
include/trace/hooks/mm.h
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@@ -523,6 +523,13 @@ DECLARE_HOOK(android_vh_try_to_unmap_one,
TP_PROTO(struct folio *folio, struct vm_area_struct *vma,
unsigned long addr, void *arg, bool ret),
TP_ARGS(folio, vma, addr, arg, ret));
DECLARE_HOOK(android_vh_mem_cgroup_charge,
TP_PROTO(struct folio *folio, struct mem_cgroup **memcg),
TP_ARGS(folio, memcg));
DECLARE_HOOK(android_vh_filemap_add_folio,
TP_PROTO(struct address_space *mapping, struct folio *folio,
pgoff_t index),
TP_ARGS(mapping, folio, index));
#endif /* _TRACE_HOOK_MM_H */
/* This part must be outside protection */

1
mm/filemap.c
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@@ -990,6 +990,7 @@ int filemap_add_folio(struct address_space *mapping, struct folio *folio,
void *shadow = NULL;
int ret;
trace_android_vh_filemap_add_folio(mapping, folio, index);
ret = mem_cgroup_charge(folio, NULL, gfp);
if (ret)
return ret;

1
mm/memcontrol.c
View File

@@ -4559,6 +4559,7 @@ int __mem_cgroup_charge(struct folio *folio, struct mm_struct *mm, gfp_t gfp)
int ret;
memcg = get_mem_cgroup_from_mm(mm);
trace_android_vh_mem_cgroup_charge(folio, &memcg);
ret = charge_memcg(folio, memcg, gfp);
css_put(&memcg->css);