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| author | kib <kib@FreeBSD.org> | 2012-05-23 18:10:54 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-05-23 18:10:54 +0000 |
| commit | 187a8c5cd64d6fbe329a4e3d5d0d4ccfe112ae69 (patch) | |
| tree | f1b9ea9963df80f79a63e2a21d0fadf277e630a6 /sys/vm/vm_fault.c | |
| parent | 1b7baa2fc1e9e62d27e339ef2a88d15ffe171da4 (diff) | |
| download | FreeBSD-src-187a8c5cd64d6fbe329a4e3d5d0d4ccfe112ae69.zip FreeBSD-src-187a8c5cd64d6fbe329a4e3d5d0d4ccfe112ae69.tar.gz | |
Calculate the count of per-process cow faults. Export the count to
userspace using the obscure spare int field in struct kinfo_proc.
Submitted by: Andrey Zonov <andrey zonov org>
MFC after: 1 week
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index fde5d4a..e3a29f0 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -805,6 +805,7 @@ vnode_locked: if (!is_first_object_locked) VM_OBJECT_LOCK(fs.object); PCPU_INC(cnt.v_cow_faults); + curthread->td_cow++; } else { prot &= ~VM_PROT_WRITE; } |
