diff options
Diffstat (limited to 'pkg/sentry/fs/file.go')
| -rw-r--r-- | pkg/sentry/fs/file.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/sentry/fs/file.go b/pkg/sentry/fs/file.go index d6752ed1b..b66d2f265 100644 --- a/pkg/sentry/fs/file.go +++ b/pkg/sentry/fs/file.go @@ -21,6 +21,7 @@ import ( "gvisor.googlesource.com/gvisor/pkg/amutex" "gvisor.googlesource.com/gvisor/pkg/log" + "gvisor.googlesource.com/gvisor/pkg/metric" "gvisor.googlesource.com/gvisor/pkg/refs" "gvisor.googlesource.com/gvisor/pkg/sentry/context" "gvisor.googlesource.com/gvisor/pkg/sentry/fs/lock" @@ -32,6 +33,8 @@ import ( "gvisor.googlesource.com/gvisor/pkg/waiter" ) +var reads = metric.MustCreateNewUint64Metric("/fs/reads", false /* sync */, "Number of file reads.") + // FileMaxOffset is the maximum possible file offset. const FileMaxOffset = math.MaxInt64 @@ -237,6 +240,7 @@ func (f *File) Readv(ctx context.Context, dst usermem.IOSequence) (int64, error) return 0, syserror.ErrInterrupted } + reads.Increment() n, err := f.FileOperations.Read(ctx, f, dst, f.offset) if n > 0 { atomic.AddInt64(&f.offset, n) @@ -255,6 +259,7 @@ func (f *File) Preadv(ctx context.Context, dst usermem.IOSequence, offset int64) return 0, syserror.ErrInterrupted } + reads.Increment() n, err := f.FileOperations.Read(ctx, f, dst, offset) f.mu.Unlock() return n, err |