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Wed, 02 Jul 2025 01:59:33 -0400 X-MC-Unique: 7jOVUjo2OjGxB1sN0MVdhw-1 X-Mimecast-MFC-AGG-ID: 7jOVUjo2OjGxB1sN0MVdhw_1751435969 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C1BDA1956096; Wed, 2 Jul 2025 05:59:28 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.88.112]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A06AB180045B; Wed, 2 Jul 2025 05:59:13 +0000 (UTC) From: Nico Pache To: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: david@redhat.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, dev.jain@arm.com, corbet@lwn.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, akpm@linux-foundation.org, baohua@kernel.org, willy@infradead.org, peterx@redhat.com, wangkefeng.wang@huawei.com, usamaarif642@gmail.com, sunnanyong@huawei.com, vishal.moola@gmail.com, thomas.hellstrom@linux.intel.com, yang@os.amperecomputing.com, kirill.shutemov@linux.intel.com, aarcange@redhat.com, raquini@redhat.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, tiwai@suse.de, will@kernel.org, dave.hansen@linux.intel.com, jack@suse.cz, cl@gentwo.org, jglisse@google.com, surenb@google.com, zokeefe@google.com, hannes@cmpxchg.org, rientjes@google.com, mhocko@suse.com, rdunlap@infradead.org Subject: [PATCH v8 04/15] khugepaged: generalize alloc_charge_folio() Date: Tue, 1 Jul 2025 23:57:31 -0600 Message-ID: <20250702055742.102808-5-npache@redhat.com> In-Reply-To: <20250702055742.102808-1-npache@redhat.com> References: <20250702055742.102808-1-npache@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Stat-Signature: o6pgf3bow56z8mquzgjfmm8637f53awu X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 6CD1516000B X-Rspam-User: X-HE-Tag: 1751435977-546918 X-HE-Meta: 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 FT1JbH+E 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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: From: Dev Jain Pass order to alloc_charge_folio() and update mTHP statistics. Reviewed-by: Baolin Wang Co-developed-by: Nico Pache Signed-off-by: Nico Pache Signed-off-by: Dev Jain --- include/linux/huge_mm.h | 2 ++ mm/huge_memory.c | 4 ++++ mm/khugepaged.c | 17 +++++++++++------ 3 files changed, 17 insertions(+), 6 deletions(-) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 4d5bb67dc4ec..a6ea89fdaee6 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -125,6 +125,8 @@ enum mthp_stat_item { MTHP_STAT_ANON_FAULT_ALLOC, MTHP_STAT_ANON_FAULT_FALLBACK, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE, + MTHP_STAT_COLLAPSE_ALLOC, + MTHP_STAT_COLLAPSE_ALLOC_FAILED, MTHP_STAT_ZSWPOUT, MTHP_STAT_SWPIN, MTHP_STAT_SWPIN_FALLBACK, diff --git a/mm/huge_memory.c b/mm/huge_memory.c index ce130225a8e5..69777a35e722 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -614,6 +614,8 @@ 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(collapse_alloc, MTHP_STAT_COLLAPSE_ALLOC); +DEFINE_MTHP_STAT_ATTR(collapse_alloc_failed, MTHP_STAT_COLLAPSE_ALLOC_FAILED); DEFINE_MTHP_STAT_ATTR(zswpout, MTHP_STAT_ZSWPOUT); DEFINE_MTHP_STAT_ATTR(swpin, MTHP_STAT_SWPIN); DEFINE_MTHP_STAT_ATTR(swpin_fallback, MTHP_STAT_SWPIN_FALLBACK); @@ -679,6 +681,8 @@ static struct attribute *any_stats_attrs[] = { #endif &split_attr.attr, &split_failed_attr.attr, + &collapse_alloc_attr.attr, + &collapse_alloc_failed_attr.attr, NULL, }; diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 7bcd4d280c71..5ff4a5bdf5f6 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1060,21 +1060,26 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm, } static int alloc_charge_folio(struct folio **foliop, struct mm_struct *mm, - struct collapse_control *cc) + struct collapse_control *cc, u8 order) { gfp_t gfp = (cc->is_khugepaged ? alloc_hugepage_khugepaged_gfpmask() : GFP_TRANSHUGE); int node = khugepaged_find_target_node(cc); struct folio *folio; - folio = __folio_alloc(gfp, HPAGE_PMD_ORDER, node, &cc->alloc_nmask); + folio = __folio_alloc(gfp, order, node, &cc->alloc_nmask); if (!folio) { *foliop = NULL; - count_vm_event(THP_COLLAPSE_ALLOC_FAILED); + if (order == HPAGE_PMD_ORDER) + count_vm_event(THP_COLLAPSE_ALLOC_FAILED); + count_mthp_stat(order, MTHP_STAT_COLLAPSE_ALLOC_FAILED); return SCAN_ALLOC_HUGE_PAGE_FAIL; } - count_vm_event(THP_COLLAPSE_ALLOC); + if (order == HPAGE_PMD_ORDER) + count_vm_event(THP_COLLAPSE_ALLOC); + count_mthp_stat(order, MTHP_STAT_COLLAPSE_ALLOC); + if (unlikely(mem_cgroup_charge(folio, mm, gfp))) { folio_put(folio); *foliop = NULL; @@ -1111,7 +1116,7 @@ static int collapse_huge_page(struct mm_struct *mm, unsigned long address, */ mmap_read_unlock(mm); - result = alloc_charge_folio(&folio, mm, cc); + result = alloc_charge_folio(&folio, mm, cc, HPAGE_PMD_ORDER); if (result != SCAN_SUCCEED) goto out_nolock; @@ -1835,7 +1840,7 @@ static int collapse_file(struct mm_struct *mm, unsigned long addr, VM_BUG_ON(!IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS) && !is_shmem); VM_BUG_ON(start & (HPAGE_PMD_NR - 1)); - result = alloc_charge_folio(&new_folio, mm, cc); + result = alloc_charge_folio(&new_folio, mm, cc, HPAGE_PMD_ORDER); if (result != SCAN_SUCCEED) goto out; -- 2.49.0