Allow the user to request statistics for a single provider of interest. Extracted from a patch by Mark Kanda.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- monitor/hmp-cmds.c | 39 +++++++++++++++++++++++++++++++++------ 1 file changed, 33 insertions(+), 6 deletions(-) diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 26c5d2498b..4f4ecbfbfb 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -2291,6 +2291,7 @@ static StatsSchemaValueList *find_schema_value_list( } static void print_stats_results(Monitor *mon, StatsTarget target, + bool show_provider, StatsResult *result, StatsSchemaList *schema) { @@ -2305,8 +2306,10 @@ static void print_stats_results(Monitor *mon, StatsTarget target, return; } - monitor_printf(mon, "provider: %s\n", - StatsProvider_str(result->provider)); + if (show_provider) { + monitor_printf(mon, "provider: %s\n", + StatsProvider_str(result->provider)); + } for (stats_list = result->stats; stats_list; stats_list = stats_list->next, @@ -2347,7 +2350,8 @@ static void print_stats_results(Monitor *mon, StatsTarget target, } /* Create the StatsFilter that is needed for an "info stats" invocation. */ -static StatsFilter *stats_filter(StatsTarget target, int cpu_index) +static StatsFilter *stats_filter(StatsTarget target, int cpu_index, + StatsProvider provider) { StatsFilter *filter = g_malloc0(sizeof(*filter)); @@ -2369,12 +2373,27 @@ static StatsFilter *stats_filter(StatsTarget target, int cpu_index) default: break; } + + if (provider == STATS_PROVIDER__MAX) { + return filter; + } + + /* "info stats" can only query either one or all the providers. */ + StatsRequest *request = g_new0(StatsRequest, 1); + request->provider = provider; + StatsRequestList *request_list = g_new0(StatsRequestList, 1); + QAPI_LIST_PREPEND(request_list, request); + filter->has_providers = true; + filter->providers = request_list; return filter; } void hmp_info_stats(Monitor *mon, const QDict *qdict) { const char *target_str = qdict_get_str(qdict, "target"); + const char *provider_str = qdict_get_try_str(qdict, "provider"); + + StatsProvider provider = STATS_PROVIDER__MAX; StatsTarget target; Error *err = NULL; g_autoptr(StatsFilter) filter = NULL; @@ -2387,19 +2406,27 @@ void hmp_info_stats(Monitor *mon, const QDict *qdict) monitor_printf(mon, "invalid stats target %s\n", target_str); goto exit_no_print; } + if (provider_str) { + provider = qapi_enum_parse(&StatsProvider_lookup, provider_str, -1, &err); + if (err) { + monitor_printf(mon, "invalid stats provider %s\n", provider_str); + goto exit_no_print; + } + } - schema = qmp_query_stats_schemas(false, 0, &err); + schema = qmp_query_stats_schemas(provider_str ? true : false, + provider, &err); if (err) { goto exit; } switch (target) { case STATS_TARGET_VM: - filter = stats_filter(target, -1); + filter = stats_filter(target, -1, provider); break; case STATS_TARGET_VCPU: {} int cpu_index = monitor_get_cpu_index(mon); - filter = stats_filter(target, cpu_index); + filter = stats_filter(target, cpu_index, provider); break; default: abort(); -- 2.36.0