From 1336af78d5dc2a6bc54d22ed45f4dd4793c2f964 Mon Sep 17 00:00:00 2001 From: Jamie Liu Date: Tue, 6 Oct 2020 13:53:26 -0700 Subject: Implement membarrier(2) commands other than *_SYNC_CORE. Updates #267 PiperOrigin-RevId: 335713923 --- pkg/abi/linux/BUILD | 1 + pkg/abi/linux/membarrier.go | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) create mode 100644 pkg/abi/linux/membarrier.go (limited to 'pkg/abi/linux') diff --git a/pkg/abi/linux/BUILD b/pkg/abi/linux/BUILD index cdcaa8c73..4a26e28de 100644 --- a/pkg/abi/linux/BUILD +++ b/pkg/abi/linux/BUILD @@ -38,6 +38,7 @@ go_library( "ipc.go", "limits.go", "linux.go", + "membarrier.go", "mm.go", "netdevice.go", "netfilter.go", diff --git a/pkg/abi/linux/membarrier.go b/pkg/abi/linux/membarrier.go new file mode 100644 index 000000000..0f3c03e63 --- /dev/null +++ b/pkg/abi/linux/membarrier.go @@ -0,0 +1,27 @@ +// Copyright 2020 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. + +package linux + +// membarrier(2) commands, from include/uapi/linux/membarrier.h +const ( + MEMBARRIER_CMD_QUERY = 0 + MEMBARRIER_CMD_GLOBAL = (1 << 0) + MEMBARRIER_CMD_GLOBAL_EXPEDITED = (1 << 1) + MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED = (1 << 2) + MEMBARRIER_CMD_PRIVATE_EXPEDITED = (1 << 3) + MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED = (1 << 4) + MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE = (1 << 5) + MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE = (1 << 6) +) -- cgit v1.2.3