HMP pull 2022-09-15

A set of 3 small additions/fixes.
 
 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge tag 'pull-hmp-20220915a' of https://gitlab.com/dagrh/qemu into staging

HMP pull 2022-09-15

A set of 3 small additions/fixes.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

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* tag 'pull-hmp-20220915a' of https://gitlab.com/dagrh/qemu:
  hmp: Fix ordering of text
  monitor/hmp: print trace as option in help for log command
  monitor: Support specified vCPU registers

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

hmp-commands-info.hx

@@ -100,9 +100,11 @@ ERST
 
     {
         .name       = "registers",
-        .args_type  = "cpustate_all:-a",
+        .args_type  = "cpustate_all:-a,vcpu:i?",
-        .params     = "[-a]",
+        .params     = "[-a|vcpu]",
-        .help       = "show the cpu registers (-a: all - show register info for all cpus)",
+        .help       = "show the cpu registers (-a: show register info for all cpus;"
+                      " vcpu: specific vCPU to query; show the current CPU's registers if"
+                      " no argument is specified)",
         .cmd        = hmp_info_registers,
     },
 

hmp-commands.hx

@@ -1742,23 +1742,6 @@ SRST
   *icount* for the reference may be observed with ``info replay`` command.
 ERST
 
-    {
-        .name       = "info",
-        .args_type  = "item:s?",
-        .params     = "[subcommand]",
-        .help       = "show various information about the system state",
-        .cmd        = hmp_info_help,
-        .sub_table  = hmp_info_cmds,
-        .flags      = "p",
-    },
-
-SRST
-``calc_dirty_rate`` *second*
-  Start a round of dirty rate measurement with the period specified in *second*.
-  The result of the dirty rate measurement may be observed with ``info
-  dirty_rate`` command.
-ERST
-
     {
         .name       = "calc_dirty_rate",
         .args_type  = "dirty_ring:-r,dirty_bitmap:-b,second:l,sample_pages_per_GB:l?",
@@ -1770,10 +1753,10 @@ ERST
     },
 
 SRST
-``set_vcpu_dirty_limit``
+``calc_dirty_rate`` *second*
-  Set dirty page rate limit on virtual CPU, the information about all the
+  Start a round of dirty rate measurement with the period specified in *second*.
-  virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
+  The result of the dirty rate measurement may be observed with ``info
-  command.
+  dirty_rate`` command.
 ERST
 
     {
@@ -1786,8 +1769,8 @@ ERST
     },
 
 SRST
-``cancel_vcpu_dirty_limit``
+``set_vcpu_dirty_limit``
-  Cancel dirty page rate limit on virtual CPU, the information about all the
+  Set dirty page rate limit on virtual CPU, the information about all the
   virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
   command.
 ERST
@@ -1800,3 +1783,20 @@ ERST
                       "\n\t\t\t\t\t limit on a specified virtual cpu",
         .cmd        = hmp_cancel_vcpu_dirty_limit,
     },
+
+SRST
+``cancel_vcpu_dirty_limit``
+  Cancel dirty page rate limit on virtual CPU, the information about all the
+  virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
+  command.
+ERST
+
+    {
+        .name       = "info",
+        .args_type  = "item:s?",
+        .params     = "[subcommand]",
+        .help       = "show various information about the system state",
+        .cmd        = hmp_info_help,
+        .sub_table  = hmp_info_cmds,
+        .flags      = "p",
+    },

monitor/hmp.c

@@ -285,10 +285,15 @@ void help_cmd(Monitor *mon, const char *name)
         if (!strcmp(name, "log")) {
             const QEMULogItem *item;
             monitor_printf(mon, "Log items (comma separated):\n");
-            monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
+            monitor_printf(mon, "%-15s %s\n", "none", "remove all logs");
             for (item = qemu_log_items; item->mask != 0; item++) {
-                monitor_printf(mon, "%-10s %s\n", item->name, item->help);
+                monitor_printf(mon, "%-15s %s\n", item->name, item->help);
             }
+#ifdef CONFIG_TRACE_LOG
+            monitor_printf(mon, "trace:PATTERN   enable trace events\n");
+            monitor_printf(mon, "\nUse \"log trace:help\" to get a list of "
+                           "trace events.\n\n");
+#endif
             return;
         }
 

monitor/misc.c

@@ -307,6 +307,7 @@ int monitor_get_cpu_index(Monitor *mon)
 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
 {
     bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
+    int vcpu = qdict_get_try_int(qdict, "vcpu", -1);
     CPUState *cs;
 
     if (all_cpus) {
@@ -315,13 +316,18 @@ static void hmp_info_registers(Monitor *mon, const QDict *qdict)
             cpu_dump_state(cs, NULL, CPU_DUMP_FPU);
         }
     } else {
-        cs = mon_get_cpu(mon);
+        cs = vcpu >= 0 ? qemu_get_cpu(vcpu) : mon_get_cpu(mon);
 
         if (!cs) {
-            monitor_printf(mon, "No CPU available\n");
+            if (vcpu >= 0) {
+                monitor_printf(mon, "CPU#%d not available\n", vcpu);
+            } else {
+                monitor_printf(mon, "No CPU available\n");
+            }
             return;
         }
 
+        monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
         cpu_dump_state(cs, NULL, CPU_DUMP_FPU);
     }
 }