Thread (15 messages) 15 messages, 4 authors, 2022-08-30

Re: [PATCH v7 1/4] mm: add NR_SECONDARY_PAGETABLE to count secondary page table uses.

From: Yosry Ahmed <hidden>
Date: 2022-08-24 17:26:27
Also in: cgroups, kvm, kvmarm, linux-mm, lkml

On Wed, Aug 24, 2022 at 6:42 AM Ryan Roberts [off-list ref] wrote:
quoted
diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index e7aafc82be99..898c99eae8e4 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -982,6 +982,7 @@ Example output. You may not have all of these fields.
      SUnreclaim:       142336 kB
      KernelStack:       11168 kB
      PageTables:        20540 kB
+    SecPageTables:         0 kB
      NFS_Unstable:          0 kB
      Bounce:                0 kB
      WritebackTmp:          0 kB
@@ -1090,6 +1091,9 @@ KernelStack
                Memory consumed by the kernel stacks of all tasks
  PageTables
                Memory consumed by userspace page tables
+SecPageTables
+              Memory consumed by secondary page tables, this currently
+              currently includes KVM mmu allocations on x86 and arm64.
nit: I think you have a typo here: "currently currently".
Sorry I missed this, thanks for catching it. The below diff fixes it
(let me know if I need to send v8 for this, hopefully not).
diff --git a/Documentation/filesystems/proc.rst
b/Documentation/filesystems/proc.rst
index 898c99eae8e4..0b3778ec12e1 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -1093,7 +1093,7 @@ PageTables
               Memory consumed by userspace page tables
 SecPageTables
               Memory consumed by secondary page tables, this currently
-              currently includes KVM mmu allocations on x86 and arm64.
+              includes KVM mmu allocations on x86 and arm64.
 NFS_Unstable
               Always zero. Previous counted pages which had been written to
               the server, but has not been committed to stable storage.
Thanks,
Ryan
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