mirror of https://gitee.com/openkylin/libvirt.git
capabilities: Switch CPU data in NUMA topology to a struct
This will allow storing additional topology data in the NUMA topology definition. This patch changes the storage type and fixes fallout of the change across the drivers using it. This patch also changes semantics of adding new NUMA cell information. Until now the data were re-allocated and copied to the topology definition. This patch changes the addition function to steal the pointer to a pre-allocated structure to simplify the code.
This commit is contained in:
parent
987fd7db4f
commit
87b4c10c6c
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@ -65,12 +65,29 @@ virCapabilitiesNew(virArch hostarch,
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return caps;
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}
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void
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virCapabilitiesClearHostNUMACellCPUTopology(virCapsHostNUMACellCPUPtr cpus,
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size_t ncpus)
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{
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size_t i;
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if (!cpus)
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return;
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for (i = 0; i < ncpus; i++) {
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virBitmapFree(cpus[i].siblings);
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cpus[i].siblings = NULL;
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}
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}
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static void
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virCapabilitiesFreeHostNUMACell(virCapsHostNUMACellPtr cell)
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{
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if (cell == NULL)
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return;
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virCapabilitiesClearHostNUMACellCPUTopology(cell->cpus, cell->ncpus);
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VIR_FREE(cell->cpus);
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VIR_FREE(cell);
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}
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@ -236,7 +253,7 @@ virCapabilitiesAddHostMigrateTransport(virCapsPtr caps,
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* @caps: capabilities to extend
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* @num: ID number of NUMA cell
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* @ncpus: number of CPUs in cell
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* @cpus: array of CPU ID numbers for cell
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* @cpus: array of CPU definition structures, the pointer is stolen
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*
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* Registers a new NUMA cell for a host, passing in a
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* array of CPU IDs belonging to the cell
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@ -245,7 +262,7 @@ int
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virCapabilitiesAddHostNUMACell(virCapsPtr caps,
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int num,
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int ncpus,
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const int *cpus)
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virCapsHostNUMACellCPUPtr cpus)
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{
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virCapsHostNUMACellPtr cell;
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@ -256,16 +273,9 @@ virCapabilitiesAddHostNUMACell(virCapsPtr caps,
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if (VIR_ALLOC(cell) < 0)
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return -1;
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if (VIR_ALLOC_N(cell->cpus, ncpus) < 0) {
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VIR_FREE(cell);
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return -1;
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}
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memcpy(cell->cpus,
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cpus,
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ncpus * sizeof(*cpus));
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cell->ncpus = ncpus;
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cell->num = num;
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cell->cpus = cpus;
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caps->host.numaCell[caps->host.nnumaCell++] = cell;
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@ -693,7 +703,7 @@ virCapabilitiesFormatNUMATopology(virBufferPtr xml,
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virBufferAsprintf(xml, " <cpus num='%d'>\n", cells[i]->ncpus);
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for (j = 0; j < cells[i]->ncpus; j++)
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virBufferAsprintf(xml, " <cpu id='%d'/>\n",
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cells[i]->cpus[j]);
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cells[i]->cpus[j].id);
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virBufferAddLit(xml, " </cpus>\n");
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virBufferAddLit(xml, " </cell>\n");
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}
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@ -84,12 +84,21 @@ struct _virCapsGuest {
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virCapsGuestFeaturePtr *features;
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};
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typedef struct _virCapsHostNUMACellCPU virCapsHostNUMACellCPU;
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typedef virCapsHostNUMACellCPU *virCapsHostNUMACellCPUPtr;
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struct _virCapsHostNUMACellCPU {
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unsigned int id;
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unsigned int socket_id;
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unsigned int core_id;
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virBitmapPtr siblings;
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};
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typedef struct _virCapsHostNUMACell virCapsHostNUMACell;
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typedef virCapsHostNUMACell *virCapsHostNUMACellPtr;
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struct _virCapsHostNUMACell {
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int num;
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int ncpus;
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int *cpus;
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virCapsHostNUMACellCPUPtr cpus;
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};
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typedef struct _virCapsHostSecModel virCapsHostSecModel;
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@ -201,7 +210,7 @@ extern int
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virCapabilitiesAddHostNUMACell(virCapsPtr caps,
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int num,
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int ncpus,
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const int *cpus);
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virCapsHostNUMACellCPUPtr cpus);
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extern int
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@ -250,6 +259,9 @@ virCapabilitiesSupportsGuestOSTypeArch(virCapsPtr caps,
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const char *ostype,
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virArch arch);
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void
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virCapabilitiesClearHostNUMACellCPUTopology(virCapsHostNUMACellCPUPtr cpu,
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size_t ncpus);
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extern virArch
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virCapabilitiesDefaultGuestArch(virCapsPtr caps,
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@ -56,6 +56,7 @@ virCapabilitiesAddHostFeature;
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virCapabilitiesAddHostMigrateTransport;
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virCapabilitiesAddHostNUMACell;
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virCapabilitiesAllocMachines;
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virCapabilitiesClearHostNUMACellCPUTopology;
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virCapabilitiesDefaultGuestArch;
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virCapabilitiesDefaultGuestEmulator;
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virCapabilitiesDefaultGuestMachine;
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@ -1479,9 +1479,10 @@ nodeCapsInitNUMA(virCapsPtr caps)
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int n;
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unsigned long *mask = NULL;
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unsigned long *allonesmask = NULL;
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int *cpus = NULL;
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virCapsHostNUMACellCPUPtr cpus = NULL;
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int ret = -1;
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int max_n_cpus = NUMA_MAX_N_CPUS;
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int ncpus = 0;
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if (numa_available() < 0)
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return 0;
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@ -1495,7 +1496,6 @@ nodeCapsInitNUMA(virCapsPtr caps)
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for (n = 0 ; n <= numa_max_node() ; n++) {
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int i;
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int ncpus;
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/* The first time this returns -1, ENOENT if node doesn't exist... */
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if (numa_node_to_cpus(n, mask, mask_n_bytes) < 0) {
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VIR_WARN("NUMA topology for cell %d of %d not available, ignoring",
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@ -1518,20 +1518,17 @@ nodeCapsInitNUMA(virCapsPtr caps)
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for (ncpus = 0, i = 0 ; i < max_n_cpus ; i++)
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if (MASK_CPU_ISSET(mask, i))
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cpus[ncpus++] = i;
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cpus[ncpus++].id = i;
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if (virCapabilitiesAddHostNUMACell(caps,
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n,
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ncpus,
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cpus) < 0)
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if (virCapabilitiesAddHostNUMACell(caps, n, ncpus, cpus) < 0)
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goto cleanup;
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VIR_FREE(cpus);
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cpus = NULL;
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}
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ret = 0;
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cleanup:
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virCapabilitiesClearHostNUMACellCPUTopology(cpus, ncpus);
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VIR_FREE(cpus);
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VIR_FREE(mask);
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VIR_FREE(allonesmask);
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@ -2032,7 +2032,7 @@ qemuPrepareCpumap(virQEMUDriverPtr driver,
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if (result) {
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for (j = 0; j < cur_ncpus; j++)
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ignore_value(virBitmapSetBit(cpumap,
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driver->caps->host.numaCell[i]->cpus[j]));
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driver->caps->host.numaCell[i]->cpus[j].id));
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}
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}
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}
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@ -69,7 +69,7 @@ typedef struct _testDomainObjPrivate *testDomainObjPrivatePtr;
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struct _testCell {
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unsigned long mem;
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int numCpus;
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int cpus[MAX_CPUS];
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virCapsHostNUMACellCPU cpus[MAX_CPUS];
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};
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typedef struct _testCell testCell;
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typedef struct _testCell *testCellPtr;
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@ -174,8 +174,17 @@ testBuildCapabilities(virConnectPtr conn) {
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goto no_memory;
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for (i = 0; i < privconn->numCells; i++) {
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virCapsHostNUMACellCPUPtr cpu_cells;
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if (VIR_ALLOC_N(cpu_cells, privconn->cells[i].numCpus) < 0)
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goto no_memory;
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memcpy(cpu_cells, privconn->cells[i].cpus,
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sizeof(*cpu_cells) * privconn->cells[i].numCpus);
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if (virCapabilitiesAddHostNUMACell(caps, i, privconn->cells[i].numCpus,
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privconn->cells[i].cpus) < 0)
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cpu_cells) < 0)
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goto no_memory;
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}
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@ -549,7 +558,7 @@ static int testOpenDefault(virConnectPtr conn) {
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privconn->cells[u].mem = (u + 1) * 2048 * 1024;
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}
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for (u = 0 ; u < 16 ; u++) {
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privconn->cells[u % 2].cpus[(u / 2)] = u;
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privconn->cells[u % 2].cpus[(u / 2)].id = u;
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}
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if (!(privconn->caps = testBuildCapabilities(conn)))
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@ -1112,7 +1112,7 @@ sexpr_to_xend_topology(const struct sexpr *root,
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{
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const char *nodeToCpu;
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const char *cur;
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int *cpuNums = NULL;
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virCapsHostNUMACellCPUPtr cpuInfo = NULL;
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int cell, cpu, nb_cpus;
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int n = 0;
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int numCpus;
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numCpus = sexpr_int(root, "node/nr_cpus");
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if (VIR_ALLOC_N(cpuNums, numCpus) < 0)
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goto memory_error;
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cur = nodeToCpu;
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while (*cur != 0) {
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virBitmapPtr cpuset = NULL;
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goto error;
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}
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if (VIR_ALLOC_N(cpuInfo, numCpus) < 0)
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goto memory_error;
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for (n = 0, cpu = 0; cpu < numCpus; cpu++) {
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bool used;
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ignore_value(virBitmapGetBit(cpuset, cpu, &used));
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if (used)
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cpuNums[n++] = cpu;
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cpuInfo[n++].id = cpu;
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}
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virBitmapFree(cpuset);
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if (virCapabilitiesAddHostNUMACell(caps, cell, nb_cpus, cpuNums) < 0)
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if (virCapabilitiesAddHostNUMACell(caps, cell, nb_cpus, cpuInfo) < 0)
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goto memory_error;
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cpuInfo = NULL;
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}
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VIR_FREE(cpuNums);
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return 0;
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parse_error:
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virReportError(VIR_ERR_XEN_CALL, "%s", _("topology syntax error"));
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error:
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VIR_FREE(cpuNums);
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virCapabilitiesClearHostNUMACellCPUTopology(cpuInfo, nb_cpus);
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VIR_FREE(cpuInfo);
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return -1;
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memory_error:
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VIR_FREE(cpuNums);
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virReportOOMError();
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return -1;
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goto error;
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}
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