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[2003:cb:c718:6400:7621:b88a:e99e:2fa8]) by smtp.gmail.com with ESMTPSA id c6-20020adffb46000000b00346cdf48262sm13411210wrs.2.2024.04.16.01.14.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Apr 2024 01:14:19 -0700 (PDT) Message-ID: Date: Tue, 16 Apr 2024 10:14:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 2/4] mm: add per-order mTHP anon_swpout and anon_swpout_fallback counters To: Barry Song <21cnbao@gmail.com>, akpm@linux-foundation.org, linux-mm@kvack.org Cc: cerasuolodomenico@gmail.com, chrisl@kernel.org, kasong@tencent.com, linux-kernel@vger.kernel.org, peterx@redhat.com, ryan.roberts@arm.com, surenb@google.com, v-songbaohua@oppo.com, willy@infradead.org, yosryahmed@google.com, yuzhao@google.com, corbet@lwn.net References: <20240412114858.407208-1-21cnbao@gmail.com> <20240412114858.407208-3-21cnbao@gmail.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20240412114858.407208-3-21cnbao@gmail.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 633BD40004 X-Rspam-User: X-Stat-Signature: p3uxxun11tig1im3ms6q49xc5zdfte1q X-Rspamd-Server: rspam03 X-HE-Tag: 1713255263-88397 X-HE-Meta: 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 gxZ6quiG 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 12.04.24 13:48, Barry Song wrote: > From: Barry Song > > This helps to display the fragmentation situation of the swapfile, knowing > the proportion of how much we haven't split large folios. So far, we only > support non-split swapout for anon memory, with the possibility of > expanding to shmem in the future. So, we add the "anon" prefix to the > counter names. > > Signed-off-by: Barry Song > Reviewed-by: Ryan Roberts > Cc: Chris Li > Cc: David Hildenbrand > Cc: Domenico Cerasuolo > Cc: Kairui Song > Cc: Matthew Wilcox (Oracle) > Cc: Peter Xu > Cc: Ryan Roberts > Cc: Suren Baghdasaryan > Cc: Yosry Ahmed > Cc: Yu Zhao > --- > include/linux/huge_mm.h | 2 ++ > mm/huge_memory.c | 4 ++++ > mm/page_io.c | 1 + > mm/vmscan.c | 3 +++ > 4 files changed, 10 insertions(+) > > diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h > index d4fdb2641070..7cd07b83a3d0 100644 > --- a/include/linux/huge_mm.h > +++ b/include/linux/huge_mm.h > @@ -268,6 +268,8 @@ enum mthp_stat_item { > MTHP_STAT_ANON_FAULT_ALLOC, > MTHP_STAT_ANON_FAULT_FALLBACK, > MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE, > + MTHP_STAT_ANON_SWPOUT, > + MTHP_STAT_ANON_SWPOUT_FALLBACK, > __MTHP_STAT_COUNT > }; > > diff --git a/mm/huge_memory.c b/mm/huge_memory.c > index dfc38cc83a04..58f2c4745d80 100644 > --- a/mm/huge_memory.c > +++ b/mm/huge_memory.c > @@ -555,11 +555,15 @@ static struct kobj_attribute _name##_attr = __ATTR_RO(_name) > DEFINE_MTHP_STAT_ATTR(anon_fault_alloc, MTHP_STAT_ANON_FAULT_ALLOC); > DEFINE_MTHP_STAT_ATTR(anon_fault_fallback, MTHP_STAT_ANON_FAULT_FALLBACK); > DEFINE_MTHP_STAT_ATTR(anon_fault_fallback_charge, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE); > +DEFINE_MTHP_STAT_ATTR(anon_swpout, MTHP_STAT_ANON_SWPOUT); > +DEFINE_MTHP_STAT_ATTR(anon_swpout_fallback, MTHP_STAT_ANON_SWPOUT_FALLBACK); > > static struct attribute *stats_attrs[] = { > &anon_fault_alloc_attr.attr, > &anon_fault_fallback_attr.attr, > &anon_fault_fallback_charge_attr.attr, > + &anon_swpout_attr.attr, > + &anon_swpout_fallback_attr.attr, > NULL, > }; > > diff --git a/mm/page_io.c b/mm/page_io.c > index a9a7c236aecc..46c603dddf04 100644 > --- a/mm/page_io.c > +++ b/mm/page_io.c > @@ -217,6 +217,7 @@ static inline void count_swpout_vm_event(struct folio *folio) > count_memcg_folio_events(folio, THP_SWPOUT, 1); > count_vm_event(THP_SWPOUT); > } > + count_mthp_stat(folio_order(folio), MTHP_STAT_ANON_SWPOUT); > #endif > count_vm_events(PSWPOUT, folio_nr_pages(folio)); > } > diff --git a/mm/vmscan.c b/mm/vmscan.c > index bca2d9981c95..49bd94423961 100644 > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -1231,6 +1231,8 @@ static unsigned int shrink_folio_list(struct list_head *folio_list, > goto activate_locked; > } > if (!add_to_swap(folio)) { > + int __maybe_unused order = folio_order(folio); > + > if (!folio_test_large(folio)) > goto activate_locked_split; > /* Fallback to swap normal pages */ > @@ -1242,6 +1244,7 @@ static unsigned int shrink_folio_list(struct list_head *folio_list, > THP_SWPOUT_FALLBACK, 1); > count_vm_event(THP_SWPOUT_FALLBACK); > } > + count_mthp_stat(order, MTHP_STAT_ANON_SWPOUT_FALLBACK); Why the temporary variable for order? count_mthp_stat(folio_order(order), MTHP_STAT_ANON_SWPOUT_FALLBACK); ... but now I do wonder if we want to pass the folio to count_mthp_stat() ? Anyhow Acked-by: David Hildenbrand -- Cheers, David / dhildenb