hmp: change hmp_info_cpus to use query-cpus-fast

Changing the implementation of hmp_info_cpus() to call
qmp_query_cpus_fast() instead of qmp_query_cpus. This has the
following consequences:

  o No further code change required for qmp_query_cpus deprecation

  o HMP profits from the less disruptive cpu information retrieval

  o HMP 'info cpus' won't display architecture specific data anymore,
    which should be tolerable in the light of the deprecation of
    query-cpus.

In order to allow 'info cpus' to be executed completely on the
fast path, monitor_get_cpu_index() has been adapted to not synchronize
the cpu state.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Message-Id: <1518797321-28356-6-git-send-email-mihajlov@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

1 files changed, 7 insertions, 34 deletions

diff --git a/hmp.c b/hmp.c
index 7870d6a300..ae86bfbade 100644
--- a/hmp.c
+++ b/hmp.c
@@ -360,50 +360,23 @@ void hmp_info_migrate_cache_size(Monitor *mon, const QDict *qdict)
 
 void hmp_info_cpus(Monitor *mon, const QDict *qdict)
 {
-    CpuInfoList *cpu_list, *cpu;
+    CpuInfoFastList *cpu_list, *cpu;
 
-    cpu_list = qmp_query_cpus(NULL);
+    cpu_list = qmp_query_cpus_fast(NULL);
 
     for (cpu = cpu_list; cpu; cpu = cpu->next) {
         int active = ' ';
 
-        if (cpu->value->CPU == monitor_get_cpu_index()) {
+        if (cpu->value->cpu_index == monitor_get_cpu_index()) {
             active = '*';
         }
 
-        monitor_printf(mon, "%c CPU #%" PRId64 ":", active, cpu->value->CPU);
-
-        switch (cpu->value->arch) {
-        case CPU_INFO_ARCH_X86:
-            monitor_printf(mon, " pc=0x%016" PRIx64, cpu->value->u.x86.pc);
-            break;
-        case CPU_INFO_ARCH_PPC:
-            monitor_printf(mon, " nip=0x%016" PRIx64, cpu->value->u.ppc.nip);
-            break;
-        case CPU_INFO_ARCH_SPARC:
-            monitor_printf(mon, " pc=0x%016" PRIx64,
-                           cpu->value->u.q_sparc.pc);
-            monitor_printf(mon, " npc=0x%016" PRIx64,
-                           cpu->value->u.q_sparc.npc);
-            break;
-        case CPU_INFO_ARCH_MIPS:
-            monitor_printf(mon, " PC=0x%016" PRIx64, cpu->value->u.q_mips.PC);
-            break;
-        case CPU_INFO_ARCH_TRICORE:
-            monitor_printf(mon, " PC=0x%016" PRIx64, cpu->value->u.tricore.PC);
-            break;
-        default:
-            break;
-        }
-
-        if (cpu->value->halted) {
-            monitor_printf(mon, " (halted)");
-        }
-
-        monitor_printf(mon, " thread_id=%" PRId64 "\n", cpu->value->thread_id);
+        monitor_printf(mon, "%c CPU #%" PRId64 ":", active,
+                       cpu->value->cpu_index);
+        monitor_printf(mon, " thread-id=%" PRId64 "\n", cpu->value->thread_id);
     }
 
-    qapi_free_CpuInfoList(cpu_list);
+    qapi_free_CpuInfoFastList(cpu_list);
 }
 
 static void print_block_info(Monitor *mon, BlockInfo *info,