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[82.30.61.225]) by smtp.gmail.com with ESMTPSA id c2-20020adffb42000000b00210326c4a90sm21281354wrs.49.2022.06.08.05.06.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Jun 2022 05:06:30 -0700 (PDT) Date: Wed, 8 Jun 2022 13:06:29 +0100 From: "Dr. David Alan Gilbert" To: Paolo Bonzini Cc: qemu-devel@nongnu.org, armbru@redhat.com Subject: Re: [PATCH v5 08/10] hmp: add filtering of statistics by provider Message-ID: References: <20220530150714.756954-1-pbonzini@redhat.com> <20220530150714.756954-9-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220530150714.756954-9-pbonzini@redhat.com> User-Agent: Mutt/2.2.1 (2022-02-19) Received-SPF: pass client-ip=170.10.129.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Paolo Bonzini (pbonzini@redhat.com) wrote: > Allow the user to request statistics for a single provider of interest. > Extracted from a patch by Mark Kanda. > > Signed-off-by: Paolo Bonzini Reviewed-by: Dr. David Alan Gilbert > --- > hmp-commands-info.hx | 7 ++++--- > monitor/hmp-cmds.c | 39 ++++++++++++++++++++++++++++++++------- > 2 files changed, 36 insertions(+), 10 deletions(-) > > diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx > index 28757768f7..a67040443b 100644 > --- a/hmp-commands-info.hx > +++ b/hmp-commands-info.hx > @@ -897,9 +897,10 @@ ERST > > { > .name = "stats", > - .args_type = "target:s", > - .params = "target", > - .help = "show statistics; target is either vm or vcpu", > + .args_type = "target:s,provider:s?", > + .params = "target [provider]", > + .help = "show statistics for the given target (vm or vcpu); optionally filter by " > + "provider", > .cmd = hmp_info_stats, > }, > > diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c > index c501d1fa2b..a71887e54c 100644 > --- a/monitor/hmp-cmds.c > +++ b/monitor/hmp-cmds.c > @@ -2300,6 +2300,7 @@ static StatsSchemaValueList *find_schema_value_list( > } > > static void print_stats_results(Monitor *mon, StatsTarget target, > + bool show_provider, > StatsResult *result, > StatsSchemaList *schema) > { > @@ -2314,8 +2315,10 @@ 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, > @@ -2356,7 +2359,8 @@ 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)); > > @@ -2378,12 +2382,25 @@ 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. */ > + filter->has_providers = true; > + filter->providers = g_new0(StatsRequestList, 1); > + filter->providers->value = g_new0(StatsRequest, 1); > + filter->providers->value->provider = provider; > 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(StatsSchemaList) schema = NULL; > @@ -2396,19 +2413,27 @@ 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, STATS_PROVIDER__MAX, &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(); > @@ -2419,7 +2444,7 @@ void hmp_info_stats(Monitor *mon, const QDict *qdict) > goto exit; > } > for (entry = stats; entry; entry = entry->next) { > - print_stats_results(mon, target, entry->value, schema); > + print_stats_results(mon, target, provider_str == NULL, entry->value, schema); > } > > exit: > -- > 2.36.1 > > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK