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libxl: Refactor libxlDomainGetVcpuPinInfo

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Reuse the approach in qemuDomainGetVcpuPinInfo.
This commit is contained in:
Peter Krempa 2015-05-22 14:51:18 +02:00
parent df55ed4bc0
commit f35b9b7898
1 changed files with 23 additions and 25 deletions
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48
src/libxl/libxl_driver.c
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@ -2307,10 +2307,8 @@ libxlDomainGetVcpuPinInfo(virDomainPtr dom, int ncpumaps,
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
virDomainObjPtr vm = NULL;
virDomainDefPtr targetDef = NULL;
virDomainPinDefPtr *vcpupin_list;
virBitmapPtr cpumask = NULL;
int maxcpu, hostcpus, vcpu, pcpu, n, ret = -1;
unsigned char *cpumap;
int hostcpus, vcpu, ret = -1;
virBitmapPtr allcpumap = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
@ -2338,33 +2336,33 @@ libxlDomainGetVcpuPinInfo(virDomainPtr dom, int ncpumaps,
if ((hostcpus = libxl_get_max_cpus(cfg->ctx)) < 0)
goto cleanup;
maxcpu = maplen * 8;
if (maxcpu > hostcpus)
maxcpu = hostcpus;
if (!(allcpumap = virBitmapNew(hostcpus)))
goto cleanup;
/* initialize cpumaps */
memset(cpumaps, 0xff, maplen * ncpumaps);
if (maxcpu % 8) {
for (vcpu = 0; vcpu < ncpumaps; vcpu++) {
cpumap = VIR_GET_CPUMAP(cpumaps, maplen, vcpu);
cpumap[maplen - 1] &= (1 << maxcpu % 8) - 1;
}
virBitmapSetAll(allcpumap);
memset(cpumaps, 0x00, maplen * ncpumaps);
for (vcpu = 0; vcpu < ncpumaps; vcpu++) {
virDomainPinDefPtr pininfo;
virBitmapPtr bitmap = NULL;
pininfo = virDomainPinFind(targetDef->cputune.vcpupin,
targetDef->cputune.nvcpupin,
vcpu);
if (pininfo && pininfo->cpumask)
bitmap = pininfo->cpumask;
else
bitmap = allcpumap;
virBitmapToDataBuf(bitmap, VIR_GET_CPUMAP(cpumaps, maplen, vcpu), maplen);
}
/* if vcpupin setting exists, there may be unused pcpus */
for (n = 0; n < targetDef->cputune.nvcpupin; n++) {
vcpupin_list = targetDef->cputune.vcpupin;
vcpu = vcpupin_list[n]->id;
cpumask = vcpupin_list[n]->cpumask;
cpumap = VIR_GET_CPUMAP(cpumaps, maplen, vcpu);
for (pcpu = 0; pcpu < maxcpu; pcpu++) {
if (!virBitmapIsBitSet(cpumask, pcpu))
VIR_UNUSE_CPU(cpumap, pcpu);
}
}
ret = ncpumaps;
cleanup:
virBitmapFree(allcpumap);
if (vm)
virObjectUnlock(vm);
virObjectUnref(cfg);