podman
1/*
2* Copyright 2021 ByteDance Inc.
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8* http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16
17package cpu
18
19import (
20`fmt`
21`os`
22
23`github.com/klauspost/cpuid/v2`
24)
25
26var (
27HasAVX = cpuid.CPU.Has(cpuid.AVX)
28HasAVX2 = cpuid.CPU.Has(cpuid.AVX2)
29HasSSE = cpuid.CPU.Has(cpuid.SSE)
30)
31
32func init() {
33switch v := os.Getenv("SONIC_MODE"); v {
34case "" : break
35case "auto" : break
36case "noavx" : HasAVX = false; fallthrough
37case "noavx2" : HasAVX2 = false
38default : panic(fmt.Sprintf("invalid mode: '%s', should be one of 'auto', 'noavx', 'noavx2'", v))
39}
40}
41