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qemu: Add monitor support for CPU halted state 

Extended the qemuMonitorCPUInfo with a halted flag. Extract the halted
flag for both text and JSON monitor.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
This commit is contained in:
Viktor Mihajlovski 2016-10-13 13:42:44 +02:00 committed by John Ferlan
parent ab9202e431
commit cc5e695bde
5 changed files with 22 additions and 6 deletions
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6
src/qemu/qemu_monitor.c
View File

@ -1677,6 +1677,7 @@ qemuMonitorCPUInfoClear(qemuMonitorCPUInfoPtr cpus,
cpus[i].thread_id = -1;
cpus[i].vcpus = 0;
cpus[i].tid = 0;
cpus[i].halted = false;
VIR_FREE(cpus[i].qom_path);
VIR_FREE(cpus[i].alias);
@ -1725,8 +1726,10 @@ qemuMonitorGetCPUInfoLegacy(struct qemuMonitorQueryCpusEntry *cpuentries,
size_t i;
for (i = 0; i < maxvcpus; i++) {
if (i < ncpuentries)
if (i < ncpuentries) {
vcpus[i].tid = cpuentries[i].tid;
vcpus[i].halted = cpuentries[i].halted;
}
/* for legacy hotplug to work we need to fake the vcpu count added by
* enabling a given vcpu */
@ -1864,6 +1867,7 @@ qemuMonitorGetCPUInfoHotplug(struct qemuMonitorQueryHotpluggableCpusEntry *hotpl
}
vcpus[anyvcpu].tid = cpuentries[j].tid;
vcpus[anyvcpu].halted = cpuentries[j].halted;
}
return 0;

3
src/qemu/qemu_monitor.h
View File

@ -394,6 +394,7 @@ int qemuMonitorSystemPowerdown(qemuMonitorPtr mon);
struct qemuMonitorQueryCpusEntry {
pid_t tid;
char *qom_path;
bool halted;
};
void qemuMonitorQueryCpusFree(struct qemuMonitorQueryCpusEntry *entries,
size_t nentries);
@ -441,6 +442,8 @@ struct _qemuMonitorCPUInfo {
/* internal for use in the matching code */
char *qom_path;
bool halted;
};
typedef struct _qemuMonitorCPUInfo qemuMonitorCPUInfo;
typedef qemuMonitorCPUInfo *qemuMonitorCPUInfoPtr;

3
src/qemu/qemu_monitor_json.c
View File

@ -1349,6 +1349,7 @@ qemuMonitorJSONExtractCPUInfo(virJSONValuePtr data,
for (i = 0; i < ncpus; i++) {
virJSONValuePtr entry = virJSONValueArrayGet(data, i);
int thread = 0;
bool halted = false;
const char *qom_path;
if (!entry) {
ret = -2;
@ -1358,9 +1359,11 @@ qemuMonitorJSONExtractCPUInfo(virJSONValuePtr data,
/* Some older qemu versions don't report the thread_id so treat this as
* non-fatal, simply returning no data */
ignore_value(virJSONValueObjectGetNumberInt(entry, "thread_id", &thread));
ignore_value(virJSONValueObjectGetBoolean(entry, "halted", &halted));
qom_path = virJSONValueObjectGetString(entry, "qom_path");
cpus[i].tid = thread;
cpus[i].halted = halted;
if (VIR_STRDUP(cpus[i].qom_path, qom_path) < 0)
goto cleanup;
}

8
src/qemu/qemu_monitor_text.c
View File

@ -521,7 +521,7 @@ qemuMonitorTextQueryCPUs(qemuMonitorPtr mon,
* (qemu) info cpus
* * CPU #0: pc=0x00000000000f0c4a thread_id=30019
* CPU #1: pc=0x00000000fffffff0 thread_id=30020
* CPU #2: pc=0x00000000fffffff0 thread_id=30021
* CPU #2: pc=0x00000000fffffff0 (halted) thread_id=30021
*
*/
line = qemucpus;
@ -541,6 +541,12 @@ qemuMonitorTextQueryCPUs(qemuMonitorPtr mon,
cpu.tid = tid;
/* Extract halted indicator */
if ((offset = strstr(line, "(halted)")) != NULL)
cpu.halted = true;
else
cpu.halted = false;
if (VIR_APPEND_ELEMENT_COPY(cpus, ncpus, cpu) < 0) {
ret = -1;
goto cleanup;

8
tests/qemumonitorjsontest.c
View File

@ -1332,10 +1332,10 @@ testQemuMonitorJSONqemuMonitorJSONQueryCPUs(const void *data)
int ret = -1;
struct qemuMonitorQueryCpusEntry *cpudata = NULL;
struct qemuMonitorQueryCpusEntry expect[] = {
{17622, (char *) "/machine/unattached/device[0]"},
{17624, (char *) "/machine/unattached/device[1]"},
{17626, (char *) "/machine/unattached/device[2]"},
{17628, NULL},
{17622, (char *) "/machine/unattached/device[0]", true},
{17624, (char *) "/machine/unattached/device[1]", true},
{17626, (char *) "/machine/unattached/device[2]", true},
{17628, NULL, true},
};
size_t ncpudata = 0;
size_t i;