1 files changed, 0 insertions, 51 deletions
diff --git a/vdso/cycle_clock.h b/vdso/cycle_clock.h
deleted file mode 100644
index 5d3fbb257..000000000
--- a/vdso/cycle_clock.h
+++ /dev/null
@@ -1,51 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef VDSO_CYCLE_CLOCK_H_
-#define VDSO_CYCLE_CLOCK_H_
-
-#include <stdint.h>
-
-#include "vdso/barrier.h"
-
-namespace vdso {
-
-#if __x86_64__
-
-// TODO(b/74613497): The appropriate barrier instruction to use with rdtsc on
-// x86_64 depends on the vendor. Intel processors can use lfence but AMD may
-// need mfence, depending on MSR_F10H_DECFG_LFENCE_SERIALIZE_BIT.
-
-static inline uint64_t cycle_clock(void) {
-  uint32_t lo, hi;
-  asm volatile("lfence" : : : "memory");
-  asm volatile("rdtsc" : "=a"(lo), "=d"(hi));
-  return ((uint64_t)hi << 32) | lo;
-}
-
-#elif __aarch64__
-
-static inline uint64_t cycle_clock(void) {
-  uint64_t val;
-  asm volatile("mrs %0, CNTVCT_EL0" : "=r"(val)::"memory");
-  return val;
-}
-
-#else
-#error "unsupported architecture"
-#endif
-
-}  // namespace vdso
-
-#endif  // VDSO_CYCLE_CLOCK_H_