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
next prev parent reply other threads:[~2022-04-05 23:48 UTC|newest]
Thread overview: 67+ 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
2022-04-13 9:59 ` Borislav Petkov
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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