Podman Pod Create --cpus and --cpuset-cpus flags

Added logic and handling for two new Podman pod create Flags.

--cpus specifies the total number of cores on which the pod can execute, this
is a combination of the period and quota for the CPU.

 --cpuset-cpus is a string value which determines of these available cores,
how many we will truly execute on.

Signed-off-by: cdoern <cbdoer23@g.holycross.edu>

1 files changed, 40 insertions, 1 deletions

diff --git a/pkg/domain/entities/pods.go b/pkg/domain/entities/pods.go
index 88055454f..35f940bca 100644
--- a/pkg/domain/entities/pods.go
+++ b/pkg/domain/entities/pods.go
@@ -7,6 +7,8 @@ import (
 
 	"github.com/containers/podman/v3/libpod/define"
 	"github.com/containers/podman/v3/pkg/specgen"
+	"github.com/containers/podman/v3/pkg/util"
+	"github.com/opencontainers/runtime-spec/specs-go"
 )
 
 type PodKillOptions struct {
@@ -116,13 +118,35 @@ type PodCreateOptions struct {
 	Name               string
 	Net                *NetOptions
 	Share              []string
+	Cpus               float64
+	CpusetCpus         string
 }
 
 type PodCreateReport struct {
 	Id string //nolint
 }
 
-func (p PodCreateOptions) ToPodSpecGen(s *specgen.PodSpecGenerator) {
+func (p *PodCreateOptions) CPULimits() *specs.LinuxCPU {
+	cpu := &specs.LinuxCPU{}
+	hasLimits := false
+
+	if p.Cpus != 0 {
+		period, quota := util.CoresToPeriodAndQuota(p.Cpus)
+		cpu.Period = &period
+		cpu.Quota = &quota
+		hasLimits = true
+	}
+	if p.CpusetCpus != "" {
+		cpu.Cpus = p.CpusetCpus
+		hasLimits = true
+	}
+	if !hasLimits {
+		return cpu
+	}
+	return cpu
+}
+
+func (p *PodCreateOptions) ToPodSpecGen(s *specgen.PodSpecGenerator) error {
 	// Basic Config
 	s.Name = p.Name
 	s.Hostname = p.Hostname
@@ -156,6 +180,21 @@ func (p PodCreateOptions) ToPodSpecGen(s *specgen.PodSpecGenerator) {
 
 	// Cgroup
 	s.CgroupParent = p.CGroupParent
+
+	// Resource config
+	cpuDat := p.CPULimits()
+	if s.ResourceLimits == nil {
+		s.ResourceLimits = &specs.LinuxResources{}
+		s.ResourceLimits.CPU = &specs.LinuxCPU{}
+	}
+	if cpuDat != nil {
+		s.ResourceLimits.CPU = cpuDat
+		if p.Cpus != 0 {
+			s.CPUPeriod = *cpuDat.Period
+			s.CPUQuota = *cpuDat.Quota
+		}
+	}
+	return nil
 }
 
 type PodPruneOptions struct {