mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-14 11:57:51 +00:00
03bf94a8ad
Convert the cpu source to do feature discovery and creation of feature labels separately. Move cpuidutils from source/internal to the source/cpu package. Change the cpuid custom rule to utilize GetFeatures of the cpu source. Also, add minimalist unit test.
85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cpu
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/*
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#include <sys/auxv.h>
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unsigned long gethwcap() {
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return getauxval(AT_HWCAP);
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}
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*/
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import "C"
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/* all special features for s390x should be defined here */
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const (
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/* AT_HWCAP features */
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HWCAP_S390_ESAN3 = 1
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HWCAP_S390_ZARCH = 2
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HWCAP_S390_STFLE = 4
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HWCAP_S390_MSA = 8
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HWCAP_S390_LDISP = 16
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HWCAP_S390_EIMM = 32
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HWCAP_S390_DFP = 64
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HWCAP_S390_HPAGE = 128
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HWCAP_S390_ETF3EH = 256
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HWCAP_S390_HIGH_GPRS = 512
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HWCAP_S390_TE = 1024
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HWCAP_S390_VX = 2048
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HWCAP_S390_VXD = 4096
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HWCAP_S390_VXE = 8192
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HWCAP_S390_GS = 16384
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HWCAP_S390_VXRS_EXT2 = 32768
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HWCAP_S390_VXRS_PDE = 65536
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HWCAP_S390_SORT = 131072
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HWCAP_S390_DFLT = 262144
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)
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var flagNames_s390x = map[uint64]string{
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HWCAP_S390_ESAN3: "ESAN3",
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HWCAP_S390_ZARCH: "ZARCH",
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HWCAP_S390_STFLE: "STFLE",
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HWCAP_S390_MSA: "MSA",
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HWCAP_S390_LDISP: "LDISP",
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HWCAP_S390_EIMM: "EIMM",
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HWCAP_S390_DFP: "DFP",
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HWCAP_S390_HPAGE: "EDAT",
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HWCAP_S390_ETF3EH: "ETF3EH",
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HWCAP_S390_HIGH_GPRS: "HIGHGPRS",
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HWCAP_S390_TE: "TE",
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HWCAP_S390_VX: "VX",
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HWCAP_S390_VXD: "VXD",
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HWCAP_S390_VXE: "VXE",
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HWCAP_S390_GS: "GS",
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HWCAP_S390_VXRS_EXT2: "VXE2",
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HWCAP_S390_VXRS_PDE: "VXP",
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HWCAP_S390_SORT: "SORT",
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HWCAP_S390_DFLT: "DFLT",
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}
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func getCpuidFlags() []string {
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r := make([]string, 0, 20)
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hwcap := uint64(C.gethwcap())
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for i := uint(0); i < 64; i++ {
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key := uint64(1 << i)
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val := flagNames_s390x[key]
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if hwcap&key != 0 {
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r = append(r, val)
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}
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}
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return r
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}
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