Add comments for getClockTicks

Signed-off-by: Qiang Huang <[email protected]>
onorua · Jul 1, 2017 · 8254e02 · 8254e02
1 parent c3fc2b7
commit 8254e02
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/ticks.go b/ticks.go
@@ -1,5 +1,10 @@
 package cgroups
 
 func getClockTicks() uint64 {
+	// The value comes from `C.sysconf(C._SC_CLK_TCK)`, and
+	// on Linux it's a constant which is safe to be hard coded,
+	// so we can avoid using cgo here.
+	// See https://github.com/containerd/cgroups/pull/12 for
+	// more details.
 	return 100
 }