func ParseSMPFlags() (int, error) {
var smp, maxcpus, cores, threads, sockets uint64 = 1, 1, 1, 1, 1
m, e := util.ParseFlagsSubst(smpflag, "smp")
for k, v := range m {
switch k {
case "maxcpus":
maxcpus, e = strconv.ParseUint(v, 0, 0)
case "cores":
cores, e = strconv.ParseUint(v, 0, 0)
case "threads":
threads, e = strconv.ParseUint(v, 0, 0)
case "sockets":
sockets, e = strconv.ParseUint(v, 0, 0)
case "smp":
smp, e = strconv.ParseUint(v, 0, 0)
default:
fmt.Printf("Dont understand options", k, v)
continue
}
if e != nil {
goto out
}
}
// Suppress error untill we figure out the meaning of 'maxcpus'
_ = maxcpus
// smp is number of cores pers socket, number threads per core
// and number of such sockets
// smp = cores * threads * sockets
// Need to compute the SMP options form what ever is given
// If alone smp is given, using above equation calculate other values
// sockets = 1
// cores = smp / (sockets * threads)
// threads = smp / (sockets * cores)
// Recalculate
if smp != sockets*cores*threads {
if sockets > 1 {
smp = sockets * cores * threads
} else {
cores = smp / (sockets * threads)
threads = smp / (sockets * cores)
}
}
out:
return int(smp), e
}
/* Try to process as much as possible, rest send to specific platform
for interpretation */
func ParsePlatFlags() (map[string]string, error) {
m, e := util.ParseFlagsSubst(platflags, "plat")
if e != nil {
goto out
}
for k, v := range m {
switch k {
case "mem":
//p.SetMem(memParse(v))
memSize, _ = util.ParseMem(v)
case "?":
var s string
for i := range availPlats {
s += " vendor: " + availPlats[i].vendor + " model: " +
availPlats[i].model + "\n"
}
e = errors.New(s)
case "vendor":
vendor = v
case "model":
model = v
case "plat":
platname = v
default:
continue
}
// if any cases returns non-nil
if e != nil {
goto out
}
// Delete the consumed options
delete(m, k)
}
out:
return m, e
}