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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
	Sean Christopherson <seanjc@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joerg Roedel <jroedel@suse.de>, Ard Biesheuvel <ardb@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>,
	Kuppuswamy Sathyanarayanan
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	David Rientjes <rientjes@google.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Ingo Molnar <mingo@redhat.com>,
	Varad Gautam <varad.gautam@suse.com>,
	Dario Faggioli <dfaggioli@suse.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Brijesh Singh <brijesh.singh@amd.com>,
	Mike Rapoport <rppt@kernel.org>,
	David Hildenbrand <david@redhat.com>,
	x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev,
	linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv4 8/8] mm/vmstat: Add counter for memory accepting
Date: Wed,  6 Apr 2022 02:43:43 +0300	[thread overview]
Message-ID: <20220405234343.74045-9-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20220405234343.74045-1-kirill.shutemov@linux.intel.com>

The counter increased every time kernel accepts a memory region.

The counter allows to see if memory acceptation is still ongoing and
contributes to memory allocation latency.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 arch/x86/mm/unaccepted_memory.c | 1 +
 include/linux/vm_event_item.h   | 3 +++
 mm/vmstat.c                     | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/arch/x86/mm/unaccepted_memory.c b/arch/x86/mm/unaccepted_memory.c
index 2f1c3c0375cd..7cfe0bd8d2be 100644
--- a/arch/x86/mm/unaccepted_memory.c
+++ b/arch/x86/mm/unaccepted_memory.c
@@ -32,6 +32,7 @@ void accept_memory(phys_addr_t start, phys_addr_t end)
 		else
 			panic("Cannot accept memory");
 		bitmap_clear(unaccepted_memory, rs, re - rs);
+		count_vm_events(ACCEPT_MEMORY, PMD_SIZE / PAGE_SIZE);
 	}
 	spin_unlock_irqrestore(&unaccepted_memory_lock, flags);
 }
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index 16a0a4fd000b..6a468164a2f9 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -136,6 +136,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
 #ifdef CONFIG_X86
 		DIRECT_MAP_LEVEL2_SPLIT,
 		DIRECT_MAP_LEVEL3_SPLIT,
+#endif
+#ifdef CONFIG_UNACCEPTED_MEMORY
+		ACCEPT_MEMORY,
 #endif
 		NR_VM_EVENT_ITEMS
 };
diff --git a/mm/vmstat.c b/mm/vmstat.c
index b75b1a64b54c..4c9197f32406 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1397,6 +1397,9 @@ const char * const vmstat_text[] = {
 	"direct_map_level2_splits",
 	"direct_map_level3_splits",
 #endif
+#ifdef CONFIG_UNACCEPTED_MEMORY
+	"accept_memory",
+#endif
 #endif /* CONFIG_VM_EVENT_COUNTERS || CONFIG_MEMCG */
 };
 #endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA || CONFIG_MEMCG */
-- 
2.35.1



  parent reply	other threads:[~2022-04-05 23:51 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-05 23:43 [PATCHv4 0/8] mm, x86/cc: Implement support for unaccepted memory Kirill A. Shutemov
2022-04-05 23:43 ` [PATCHv4 1/8] mm: Add " Kirill A. Shutemov
2022-04-08 18:55   ` Dave Hansen
2022-04-09 15:54     ` Kirill A. Shutemov
2022-04-11  6:38       ` Dave Hansen
2022-04-11 10:07         ` Mike Rapoport
2022-04-13 11:40           ` Kirill A. Shutemov
2022-04-13 14:48             ` Mike Rapoport
2022-04-13 15:15               ` Kirill A. Shutemov
2022-04-13 20:06                 ` Mike Rapoport
2022-04-11  8:47       ` David Hildenbrand
2022-04-08 19:04   ` David Hildenbrand
2022-04-08 19:11   ` Dave Hansen
2022-04-09 17:52     ` Kirill A. Shutemov
2022-04-11  6:41       ` Dave Hansen
2022-04-11 15:55         ` Borislav Petkov
2022-04-11 16:27           ` Dave Hansen
2022-04-11 18:55             ` Tom Lendacky
2022-04-12  8:15     ` David Hildenbrand
2022-04-12 16:08       ` Dave Hansen
2022-04-13 10:36         ` David Hildenbrand
2022-04-13 11:30           ` Kirill A. Shutemov
2022-04-13 11:32             ` David Hildenbrand
2022-04-13 15:36             ` Dave Hansen
2022-04-13 16:07               ` David Hildenbrand
2022-04-13 16:13                 ` Dave Hansen
2022-04-13 16:24               ` Kirill A. Shutemov
2022-04-13 14:39           ` Mike Rapoport
2022-04-05 23:43 ` [PATCHv4 2/8] efi/x86: Get full memory map in allocate_e820() Kirill A. Shutemov
     [not found]   ` <Ylae+bejPzRMPrDw@zn.tnic>
2022-04-13 11:45     ` Kirill A. Shutemov
2022-04-05 23:43 ` [PATCHv4 3/8] efi/x86: Implement support for unaccepted memory Kirill A. Shutemov
2022-04-08 17:26   ` Dave Hansen
2022-04-09 19:41     ` Kirill A. Shutemov
2022-04-14 15:55     ` Borislav Petkov
2022-04-15 22:24   ` Borislav Petkov
2022-04-18 15:55     ` Kirill A. Shutemov
2022-04-18 16:38       ` Borislav Petkov
2022-04-18 20:24         ` Kirill A. Shutemov
2022-04-18 21:01           ` Borislav Petkov
2022-04-18 23:50             ` Kirill A. Shutemov
2022-04-19  7:39               ` Borislav Petkov
2022-04-19 15:30                 ` Kirill A. Shutemov
2022-04-19 16:38                   ` Dave Hansen
2022-04-19 19:23                   ` Borislav Petkov
2022-04-21 12:26                 ` Borislav Petkov
2022-04-22  0:21                 ` Kirill A. Shutemov
2022-04-22  9:30                   ` Borislav Petkov
2022-04-22 13:26                     ` Kirill A. Shutemov
2022-04-05 23:43 ` [PATCHv4 4/8] x86/boot/compressed: Handle " Kirill A. Shutemov
2022-04-08 17:57   ` Dave Hansen
2022-04-09 20:20     ` Kirill A. Shutemov
2022-04-11  6:49       ` Dave Hansen
2022-04-05 23:43 ` [PATCHv4 5/8] x86/mm: Reserve unaccepted memory bitmap Kirill A. Shutemov
2022-04-08 18:08   ` Dave Hansen
2022-04-09 20:43     ` Kirill A. Shutemov
2022-04-05 23:43 ` [PATCHv4 6/8] x86/mm: Provide helpers for unaccepted memory Kirill A. Shutemov
2022-04-08 18:15   ` Dave Hansen
2022-04-08 19:21   ` Dave Hansen
2022-04-13 16:08     ` Kirill A. Shutemov
2022-04-05 23:43 ` [PATCHv4 7/8] x86/tdx: Unaccepted memory support Kirill A. Shutemov
2022-04-08 18:28   ` Dave Hansen
2022-04-05 23:43 ` Kirill A. Shutemov [this message]
2022-04-12  8:18   ` [PATCHv4 8/8] mm/vmstat: Add counter for memory accepting David Hildenbrand
2022-04-08 17:02 ` [PATCHv4 0/8] mm, x86/cc: Implement support for unaccepted memory Dave Hansen
2022-04-09 23:44   ` Kirill A. Shutemov
2022-04-21 12:29     ` Borislav Petkov

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