[Qemu-devel] [PATCH v3 5/6] monitor: adding info tb and tbs to monitor

[vandersonmr]

adding options to list tbs by some metric and
investigate their code.

Signed-off-by: Vanderson M. do Rosario <address@hidden>
---
 hmp-commands-info.hx | 22 ++++++++++++++
 monitor/misc.c       | 69 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 91 insertions(+)

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index c59444c461..0b8c0de95d 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -288,6 +288,28 @@ ETEXI
         .params     = "",
         .help       = "show dynamic compiler info",
         .cmd        = hmp_info_jit,
+    {
+        .name       = "tbs",
+        .args_type  = "number:i?,sortedby:s?",
+        .params     = "[number sortedby]",
+        .help       = "show a [number] translated blocks sorted by [sortedby]"
+                      "sortedby opts: hotness hg",
+        .cmd        = hmp_info_tbs,
+    },
+    {
+        .name       = "tb",
+        .args_type  = "id:i,flags:s?",
+        .params     = "id [log1[,...] flags]",
+        .help       = "show information about one translated block by id",
+        .cmd        = hmp_info_tb,
+    },
+    {
+        .name       = "coverset",
+        .args_type  = "number:i?",
+        .params     = "[number]",
+        .help       = "show hottest translated blocks neccesary to cover"
+                      "[number]% of the execution count",
+        .cmd        = hmp_info_coverset,
     },
 #endif
 
diff --git a/monitor/misc.c b/monitor/misc.c
index bf9faceb86..1fb4d75871 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -469,6 +469,75 @@ static void hmp_info_jit(Monitor *mon, const QDict *qdict)
     dump_drift_info();
 }
 
+static void hmp_info_tbs(Monitor *mon, const QDict *qdict)
+{
+    int n;
+    const char *s = NULL;
+    if (!tcg_enabled()) {
+        error_report("TB information is only available with accel=tcg");
+        return;
+    }
+    if (!tb_ctx.tb_stats.map) {
+        error_report("no TB information recorded");
+        return;
+    }
+
+    n = qdict_get_try_int(qdict, "number", 10);
+    s = qdict_get_try_str(qdict, "sortedby");
+
+    int sortedby = 0;
+    if (s == NULL || strcmp(s, "hotness") == 0) {
+        sortedby = SORT_BY_HOTNESS;
+    } else if (strcmp(s, "hg") == 0) {
+        sortedby = SORT_BY_HG;
+    }
+
+    dump_tbs_info(n, sortedby, true);
+}
+
+static void hmp_info_tb(Monitor *mon, const QDict *qdict)
+{
+    const int id = qdict_get_int(qdict, "id");
+    const char *flags = qdict_get_try_str(qdict, "flags");
+    int mask;
+
+    if (!tcg_enabled()) {
+        error_report("TB information is only available with accel=tcg");
+        return;
+    }
+
+    mask = flags ? qemu_str_to_log_mask(flags) : CPU_LOG_TB_IN_ASM;
+
+    if (!mask) {
+        help_cmd(mon, "log");
+        return;
+    }
+
+    dump_tb_info(id, mask, true);
+}
+
+static void hmp_info_coverset(Monitor *mon, const QDict *qdict)
+{
+    int n;
+    if (!tcg_enabled()) {
+        error_report("TB information is only available with accel=tcg");
+        return;
+    }
+    if (!qemu_loglevel_mask(CPU_LOG_HOT_TBS)) {
+        error_report("TB information not being recorded");
+        return;
+    }
+
+    n = qdict_get_try_int(qdict, "number", 90);
+
+    if (n < 0 || n > 100) {
+        error_report("Coverset percentage should be between 0 and 100");
+        return;
+    }
+
+    dump_coverset_info(n, true);
+}
+
 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
 {
     dump_opcount_info();
-- 
2.22.0