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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: 373540729
Change-Id: I11b1fca279ea9e9e8be1f789bdf1f9d7c1bf001f
Signed-off-by: Jianan Huang <huangjianan@xiaomi.com>
(cherry picked from commit 6e2565c513127c425ddfb84e473dba8161154036)
This commit is contained in:
Jianan Huang
2024-10-15 14:32:06 +08:00
committed by Todd Kjos
parent e63d8c3188
commit f2a18f1865
4 changed files with 11 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
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@@ -297,6 +297,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_read_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_preset);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_uid);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_charge);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_id_remove);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_css_offline);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_css_online);
@@ -451,6 +452,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_record_rwsem_reader_owned);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_rwsem_reader_owned);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_record_rwsem_writer_owned);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_rwsem_writer_owned);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_add_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pr_set_vma_name_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_folio_trylock);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_get_folio_trylock_result);

7
include/trace/hooks/mm.h
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@@ -221,6 +221,9 @@ DECLARE_HOOK(android_vh_look_around,
DECLARE_HOOK(android_vh_mm_alloc_pages_direct_reclaim_enter,
TP_PROTO(unsigned int order),
TP_ARGS(order));
DECLARE_HOOK(android_vh_mem_cgroup_charge,
TP_PROTO(struct folio *folio, struct mem_cgroup **memcg),
TP_ARGS(folio, memcg));
DECLARE_HOOK(android_vh_should_fault_around,
TP_PROTO(struct vm_fault *vmf, bool *should_around),
TP_ARGS(vmf, should_around));
@@ -282,6 +285,10 @@ DECLARE_HOOK(android_vh_oom_swapmem_gather_init,
DECLARE_HOOK(android_vh_oom_swapmem_gather_finish,
TP_PROTO(struct mm_struct *mm),
TP_ARGS(mm));
DECLARE_HOOK(android_vh_filemap_add_folio,
TP_PROTO(struct address_space *mapping, struct folio *folio,
pgoff_t index),
TP_ARGS(mapping, folio, index));
DECLARE_HOOK(android_vh_do_read_fault,
TP_PROTO(struct vm_fault *vmf, unsigned long fault_around_bytes),
TP_ARGS(vmf, fault_around_bytes));

1
mm/filemap.c
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@@ -870,6 +870,7 @@ noinline int __filemap_add_folio(struct address_space *mapping,
VM_BUG_ON_FOLIO(folio_test_swapbacked(folio), folio);
mapping_set_update(&xas, mapping);
trace_android_vh_filemap_add_folio(mapping, folio, index);
if (!huge) {
int error = mem_cgroup_charge(folio, NULL, gfp);
VM_BUG_ON_FOLIO(index & (folio_nr_pages(folio) - 1), folio);

1
mm/memcontrol.c
View File

@@ -6978,6 +6978,7 @@ 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);