mirror of https://github.com/k3s-io/k3s
67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
// +build linux
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package fs
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import (
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"fmt"
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"strconv"
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"github.com/opencontainers/runc/libcontainer/cgroups"
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"github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
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"github.com/opencontainers/runc/libcontainer/configs"
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)
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type HugetlbGroup struct {
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}
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func (s *HugetlbGroup) Name() string {
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return "hugetlb"
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}
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func (s *HugetlbGroup) Apply(path string, d *cgroupData) error {
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return join(path, d.pid)
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}
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func (s *HugetlbGroup) Set(path string, cgroup *configs.Cgroup) error {
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for _, hugetlb := range cgroup.Resources.HugetlbLimit {
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if err := fscommon.WriteFile(path, "hugetlb."+hugetlb.Pagesize+".limit_in_bytes", strconv.FormatUint(hugetlb.Limit, 10)); err != nil {
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return err
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}
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}
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return nil
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}
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func (s *HugetlbGroup) GetStats(path string, stats *cgroups.Stats) error {
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hugetlbStats := cgroups.HugetlbStats{}
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if !cgroups.PathExists(path) {
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return nil
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}
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for _, pageSize := range HugePageSizes {
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usage := "hugetlb." + pageSize + ".usage_in_bytes"
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value, err := fscommon.GetCgroupParamUint(path, usage)
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if err != nil {
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return fmt.Errorf("failed to parse %s - %v", usage, err)
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}
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hugetlbStats.Usage = value
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maxUsage := "hugetlb." + pageSize + ".max_usage_in_bytes"
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value, err = fscommon.GetCgroupParamUint(path, maxUsage)
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if err != nil {
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return fmt.Errorf("failed to parse %s - %v", maxUsage, err)
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}
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hugetlbStats.MaxUsage = value
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failcnt := "hugetlb." + pageSize + ".failcnt"
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value, err = fscommon.GetCgroupParamUint(path, failcnt)
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if err != nil {
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return fmt.Errorf("failed to parse %s - %v", failcnt, err)
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}
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hugetlbStats.Failcnt = value
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stats.HugetlbStats[pageSize] = hugetlbStats
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}
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return nil
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}
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