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qmp: add architecture specific cpu data for query-cpus-fast

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The s390 CPU state can be retrieved without interrupting the
VM execution. Extendend the CpuInfoFast union with architecture
specific data and an implementation for s390.

Return data looks like this:
 [
   {"thread-id":64301,"props":{"core-id":0},
    "arch":"s390","cpu-state":"operating",
    "qom-path":"/machine/unattached/device[0]","cpu-index":0},
   {"thread-id":64302,"props":{"core-id":1},
    "arch":"s390","cpu-state":"operating",
    "qom-path":"/machine/unattached/device[1]","cpu-index":1}
]

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1518797321-28356-4-git-send-email-mihajlov@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Viktor Mihajlovski 2018-02-16 17:08:39 +01:00 committed by Cornelia Huck
parent ce74ee3dea
commit ca230ff33f
2 changed files with 28 additions and 7 deletions
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10
cpus.c
View File

@ -2166,6 +2166,10 @@ CpuInfoFastList *qmp_query_cpus_fast(Error **errp)
MachineClass *mc = MACHINE_GET_CLASS(ms);
CpuInfoFastList *head = NULL, *cur_item = NULL;
CPUState *cpu;
#if defined(TARGET_S390X)
S390CPU *s390_cpu;
CPUS390XState *env;
#endif
CPU_FOREACH(cpu) {
CpuInfoFastList *info = g_malloc0(sizeof(*info));
@ -2183,6 +2187,12 @@ CpuInfoFastList *qmp_query_cpus_fast(Error **errp)
info->value->props = props;
}
#if defined(TARGET_S390X)
s390_cpu = S390_CPU(cpu);
env = &s390_cpu->env;
info->value->arch = CPU_INFO_ARCH_S390;
info->value->u.s390.cpu_state = env->cpu_state;
#endif
if (!cur_item) {
head = cur_item = info;
} else {

25
qapi-schema.json
View File

@ -408,7 +408,7 @@
# @CpuInfoArch:
#
# An enumeration of cpu types that enable additional information during
# @query-cpus.
# @query-cpus and @query-cpus-fast.
#
# @s390: since 2.12
#
@ -604,12 +604,24 @@
# @props: properties describing to which node/socket/core/thread
# virtual CPU belongs to, provided if supported by board
#
# @arch: architecture of the cpu, which determines which additional fields
# will be listed
#
# Since: 2.12
#
##
{ 'struct': 'CpuInfoFast',
'data': {'cpu-index': 'int', 'qom-path': 'str',
'thread-id': 'int', '*props': 'CpuInstanceProperties' } }
{ 'union': 'CpuInfoFast',
'base': {'cpu-index': 'int', 'qom-path': 'str',
'thread-id': 'int', '*props': 'CpuInstanceProperties',
'arch': 'CpuInfoArch' },
'discriminator': 'arch',
'data': { 'x86': 'CpuInfoOther',
'sparc': 'CpuInfoOther',
'ppc': 'CpuInfoOther',
'mips': 'CpuInfoOther',
'tricore': 'CpuInfoOther',
's390': 'CpuInfoS390',
'other': 'CpuInfoOther' } }
##
# @query-cpus-fast:
@ -620,9 +632,6 @@
#
# Returns: list of @CpuInfoFast
#
# Notes: The CPU architecture name is not returned by query-cpus-fast.
# Use query-target to retrieve that information.
#
# Since: 2.12
#
# Example:
@ -637,6 +646,7 @@
# "socket-id": 0
# },
# "qom-path": "/machine/unattached/device[0]",
# "arch":"x86",
# "cpu-index": 0
# },
# {
@ -647,6 +657,7 @@
# "socket-id": 1
# },
# "qom-path": "/machine/unattached/device[2]",
# "arch":"x86",
# "cpu-index": 1
# }
# ]