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Mon, 30 May 2022 08:07:37 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz581ND6eiMY6tUg2a7yaPZD61xnbooWnNVxbIjVCNOO/9tFeBE2Fz9w38H9RU44BSwYrfk9w== X-Received: by 2002:a05:600c:502a:b0:397:44d1:d5b6 with SMTP id n42-20020a05600c502a00b0039744d1d5b6mr19478050wmr.57.1653923257301; Mon, 30 May 2022 08:07:37 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: armbru@redhat.com, dgilbert@redhat.com Subject: [PATCH v5 10/10] hmp: add filtering of statistics by name Date: Mon, 30 May 2022 17:07:14 +0200 Message-Id: <20220530150714.756954-11-pbonzini@redhat.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220530150714.756954-1-pbonzini@redhat.com> References: <20220530150714.756954-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1653923762126100003 Content-Type: text/plain; charset="utf-8" Allow the user to request only a specific subset of statistics. This can be useful when working on a feature or optimization that is known to affect that statistic. Extracted from a patch by Mark Kanda. Signed-off-by: Paolo Bonzini Reviewed-by: Dr. David Alan Gilbert --- hmp-commands-info.hx | 8 ++++---- monitor/hmp-cmds.c | 35 ++++++++++++++++++++++++++--------- 2 files changed, 30 insertions(+), 13 deletions(-) diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx index a67040443b..3ffa24bd67 100644 --- a/hmp-commands-info.hx +++ b/hmp-commands-info.hx @@ -897,10 +897,10 @@ ERST =20 { .name =3D "stats", - .args_type =3D "target:s,provider:s?", - .params =3D "target [provider]", - .help =3D "show statistics for the given target (vm or vcpu)= ; optionally filter by " - "provider", + .args_type =3D "target:s,names:s?,provider:s?", + .params =3D "target [names] [provider]", + .help =3D "show statistics for the given target (vm or vcpu)= ; optionally filter by" + "name (comma-separated list, or * for all) and provi= der", .cmd =3D hmp_info_stats, }, =20 diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index a71887e54c..8775f69ff1 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -2359,10 +2359,12 @@ static void print_stats_results(Monitor *mon, Stats= Target target, } =20 /* Create the StatsFilter that is needed for an "info stats" invocation. = */ -static StatsFilter *stats_filter(StatsTarget target, int cpu_index, - StatsProvider provider) +static StatsFilter *stats_filter(StatsTarget target, const char *names, + int cpu_index, StatsProvider provider) { StatsFilter *filter =3D g_malloc0(sizeof(*filter)); + StatsProvider provider_idx; + StatsRequestList *request_list =3D NULL; =20 filter->target =3D target; switch (target) { @@ -2383,15 +2385,29 @@ static StatsFilter *stats_filter(StatsTarget target= , int cpu_index, break; } =20 - if (provider =3D=3D STATS_PROVIDER__MAX) { + if (!names && provider =3D=3D STATS_PROVIDER__MAX) { return filter; } =20 - /* "info stats" can only query either one or all the providers. */ + /* + * "info stats" can only query either one or all the providers. Query= ing + * by name, but not by provider, requires the creation of one filter p= er + * provider. + */ + for (provider_idx =3D 0; provider_idx < STATS_PROVIDER__MAX; provider_= idx++) { + if (provider =3D=3D STATS_PROVIDER__MAX || provider =3D=3D provide= r_idx) { + StatsRequest *request =3D g_new0(StatsRequest, 1); + request->provider =3D provider_idx; + if (names && !g_str_equal(names, "*")) { + request->has_names =3D true; + request->names =3D strList_from_comma_list(names); + } + QAPI_LIST_PREPEND(request_list, request); + } + } + filter->has_providers =3D true; - filter->providers =3D g_new0(StatsRequestList, 1); - filter->providers->value =3D g_new0(StatsRequest, 1); - filter->providers->value->provider =3D provider; + filter->providers =3D request_list; return filter; } =20 @@ -2399,6 +2415,7 @@ void hmp_info_stats(Monitor *mon, const QDict *qdict) { const char *target_str =3D qdict_get_str(qdict, "target"); const char *provider_str =3D qdict_get_try_str(qdict, "provider"); + const char *names =3D qdict_get_try_str(qdict, "names"); =20 StatsProvider provider =3D STATS_PROVIDER__MAX; StatsTarget target; @@ -2429,11 +2446,11 @@ void hmp_info_stats(Monitor *mon, const QDict *qdic= t) =20 switch (target) { case STATS_TARGET_VM: - filter =3D stats_filter(target, -1, provider); + filter =3D stats_filter(target, names, -1, provider); break; case STATS_TARGET_VCPU: {} int cpu_index =3D monitor_get_cpu_index(mon); - filter =3D stats_filter(target, cpu_index, provider); + filter =3D stats_filter(target, names, cpu_index, provider); break; default: abort(); --=20 2.36.1