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([102.35.208.160]) by smtp.gmail.com with ESMTPSA id u17-20020a05600c211100b0040fc5460109sm1312756wml.35.2024.02.06.01.24.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Feb 2024 01:24:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1707211481; x=1707816281; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tr3Be+F/pb6UoTGk/xigsw32PICcW54rqyyS4zJsi9I=; b=Tg3htUDo9r92+5gZeugfoI+R2AauBsIDVelezMWLoZSPQZ0ubQ5vTVikE8fWadclLf lPlYFNtlxfbwTAsCfT6LEetsPzkfqa3BN3qwfRejqLB4HTa+BKzbJwPbkmgPExk2sfWk DJYGYWKNmZM6uflP7HKwq/f6mhc4hDZIQsfjAuRWmFE0kygQkQS8gOfvXO4/b5fWFVbH 0PBXU7bVOCXsekqUxgt/mh/gQTfRvRzHs97Zp2Ue+YJ8JhyPPjg1cnPwW2eCkPgBDzEv +BSXsGp24w02LS83B2o9+88Bm9cpze1dP7Xwq9L/s8n1K7GEbyINNH1ssU957cG/oTGS CGCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707211481; x=1707816281; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tr3Be+F/pb6UoTGk/xigsw32PICcW54rqyyS4zJsi9I=; b=Comb/bjAOrx1OWzwZwXqzsXV24XmnE2Q0AdK5IdWiJ7Kgaq0lXFPwNyx17m1oVpoaO 1xPpLjQATLfl/044Yqwr8DJkto2dCW85/bL1UGiaBEz346P4hanAfFFQ9r+3mJfdUUyR lHhIxyVuiooHJoib4IDrdRRbzDAGhlZfvlBSGOXx5Xity0gcHa7OHPIS7O8u78QiCvxd fj4PK5sfp9kvew3joNfB+SAhS7ACGyWFZpciWQKkxHpbPVSGQozm6PtsOLpx2NS1XETq XYsN/2abaQIHEJgDcsmjNtFazBAoWLcfSb46v4bCg0DZE+v8yRaNzFk8yH6Ru6IvmItH DyAQ== X-Gm-Message-State: AOJu0YzQ3J+zxb4UDgav12M820ZZrNvHgUs1zLDe9r4XeCf6QWMG/WfY Tz7JlAb5heeUJd1/oDB2kx65WP0pVzAr9tDPY0x8AnWv5FtnuUo4j6iM/XWrKQnFiBn7JVDMz5S R4lg= X-Google-Smtp-Source: AGHT+IEvFY2zRx+smBpQ/P27gN4KA+fQ1gR/ptPtwnOAeaAssLvOqwLUWnppgqKs8nVLuK7OGyCWFQ== X-Received: by 2002:a05:600c:3b11:b0:40e:fb8f:76b2 with SMTP id m17-20020a05600c3b1100b0040efb8f76b2mr1227643wms.12.1707211481006; Tue, 06 Feb 2024 01:24:41 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCWAdSywLF8zYD6TJZg28zqfmrAJ/ySRwUTjBTDZTJtNtCSoKxH2rEmjDqha6JfHGZ2evLeoPZxSjnd4dMnOTLQgu0czccd2qTX6nluMML0q/PBvZEAnQSBEgUKFuqnQ5rz8LDik4gLkw0ErFL9VkNWUzq6ZK455w3ueRZ1zOQZYGJUEvGdWPaCbqS0LNxGuhxauYhaSYkRVDdvCJ2w5gUv/FErVeWgrtoS0afbfsBASdfl3A9rzICOowTjd6BtOKbzpTMwOhRzNpidG34KP4k2aTShyBETcpafBA4lRnSsJFrEuYPAMrwB8D76wkCldqxkQFTS4oyp+IBaxp761ysMs9WIg/lcXcw== From: Pierrick Bouvier To: qemu-devel@nongnu.org Cc: Eduardo Habkost , Alexandre Iooss , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Mahmoud Mandour , Marcel Apfelbaum , Yanan Wang , Pierrick Bouvier , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v3 02/17] plugins: add qemu_plugin_num_vcpus function Date: Tue, 6 Feb 2024 13:24:07 +0400 Message-ID: <20240206092423.3005995-3-pierrick.bouvier@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240206092423.3005995-1-pierrick.bouvier@linaro.org> References: <20240206092423.3005995-1-pierrick.bouvier@linaro.org> 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=2a00:1450:4864:20::32a; envelope-from=pierrick.bouvier@linaro.org; helo=mail-wm1-x32a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1707211524685100001 Content-Type: text/plain; charset="utf-8" We now keep track of how many vcpus were started. This way, a plugin can easily query number of any vcpus at any point of execution, which unifies user and system mode workflows. Signed-off-by: Pierrick Bouvier --- include/qemu/qemu-plugin.h | 3 +++ plugins/plugin.h | 4 ++++ plugins/api.c | 5 +++++ plugins/core.c | 6 ++++++ plugins/qemu-plugins.symbols | 1 + 5 files changed, 19 insertions(+) diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h index 0e506ee644d..e94ae4d2abb 100644 --- a/include/qemu/qemu-plugin.h +++ b/include/qemu/qemu-plugin.h @@ -646,6 +646,9 @@ QEMU_PLUGIN_API void qemu_plugin_register_atexit_cb(qemu_plugin_id_t id, qemu_plugin_udata_cb_t cb, void *userd= ata); =20 +/* returns how many vcpus were started at this point */ +int qemu_plugin_num_vcpus(void); + /** * qemu_plugin_outs() - output string via QEMU's logging system * @string: a string diff --git a/plugins/plugin.h b/plugins/plugin.h index 90f3f324ab6..00b3509f708 100644 --- a/plugins/plugin.h +++ b/plugins/plugin.h @@ -44,6 +44,8 @@ struct qemu_plugin_state { * the code cache is flushed. */ struct qht dyn_cb_arr_ht; + /* How many vcpus were started */ + int num_vcpus; }; =20 =20 @@ -97,4 +99,6 @@ void plugin_register_vcpu_mem_cb(GArray **arr, =20 void exec_inline_op(struct qemu_plugin_dyn_cb *cb); =20 +int plugin_num_vcpus(void); + #endif /* PLUGIN_H */ diff --git a/plugins/api.c b/plugins/api.c index 2aaae4e47f3..dbfc5e83729 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -353,6 +353,11 @@ const char *qemu_plugin_hwaddr_device_name(const struc= t qemu_plugin_hwaddr *h) #endif } =20 +int qemu_plugin_num_vcpus(void) +{ + return plugin_num_vcpus(); +} + /* * Plugin output */ diff --git a/plugins/core.c b/plugins/core.c index 49588285dd0..9e64820ad02 100644 --- a/plugins/core.c +++ b/plugins/core.c @@ -214,6 +214,7 @@ void qemu_plugin_vcpu_init_hook(CPUState *cpu) bool success; =20 qemu_rec_mutex_lock(&plugin.lock); + plugin.num_vcpus =3D MAX(plugin.num_vcpus, cpu->cpu_index + 1); plugin_cpu_update__locked(&cpu->cpu_index, NULL, NULL); success =3D g_hash_table_insert(plugin.cpu_ht, &cpu->cpu_index, &cpu->cpu_index); @@ -571,3 +572,8 @@ static void __attribute__((__constructor__)) plugin_ini= t(void) QHT_MODE_AUTO_RESIZE); atexit(qemu_plugin_atexit_cb); } + +int plugin_num_vcpus(void) +{ + return plugin.num_vcpus; +} diff --git a/plugins/qemu-plugins.symbols b/plugins/qemu-plugins.symbols index 6088dd3714a..27fe97239be 100644 --- a/plugins/qemu-plugins.symbols +++ b/plugins/qemu-plugins.symbols @@ -17,6 +17,7 @@ qemu_plugin_mem_is_sign_extended; qemu_plugin_mem_is_store; qemu_plugin_mem_size_shift; + qemu_plugin_num_vcpus; qemu_plugin_outs; qemu_plugin_path_to_binary; qemu_plugin_read_register; --=20 2.43.0