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([38.41.223.211]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74eb9e06aa6sm13790162b3a.62.2025.07.15.22.34.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Jul 2025 22:34:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1752644056; x=1753248856; 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=GtV+8U6r6cDalyfNmOH/gMyYclw6zVKJEtKnGE3JfIo=; b=BwqBE3OX/04m1sx1qTUD00RACP3t9HygfNYeRSEONXYWOMTVLhNOvjM1+SgpojLSsQ fHKSTEEFRQACP/yRV9UoAVNziJXXZtXIgs92tCZOiDDZiIQoGXhmkwIyAA34vREGr5at OC3FHUDv99q3f1CINke+N2IyxoMr5sDrnijE9eygahNWLB+oHxKZwucK0B686rdgUcxL Yg5gJcipVFEJTHkkvIUa9DI29eDALd+UV0t1b9LHNeFVHsBEu93xMeWalhZMzTWtgVdA 5TuY1sTGzWnysZoXIzrP0EJRzJpACdQYrX4lCPKLHAKzMOxUvppHvjCdnlaliP6/fdVg oYQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752644056; x=1753248856; 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=GtV+8U6r6cDalyfNmOH/gMyYclw6zVKJEtKnGE3JfIo=; b=R3+bkSSx8vWvV0LbPJlQRNZkeNEgiz76GQIp9SUFI0i1+9ZZH23Yu8kK5bzP8eqbMv aL919AceLJFnNRzbe7xkTaUvBbDRKNw8QrLSGaHh5KP5fZXZCGxsLlla2Skqn9IIqzai He4jaKrrlOBHP1YkBetbpbLGjc9tvlqU5UgjPFP9s89EeNZB6BWWzAOzqDAQH4cXsu2P rDhBJVhPYTMobyglnxUv8Fj+5cTLfU7mlnlX77IYRucU6U2RVZ1mCdjpWg5a92jA0Udb 3+cLf5Y2g8wAGv4LbRvdayejrPozlHrlYUd2BQapy8kxu29Xv4z46q16ncoi/0bAjoXM ePIg== X-Gm-Message-State: AOJu0YwdsTNkkh28kEMGFhm5a+Pv41DpdoOYZibFGGr0HS4a+86Velxl g/3Ghxg1n58J8f4jYLDXAFPD5Xgo0LKA/P1/rXPqt188pFEmGqiIo1fFrYERQ7K5XctLXaCD4/o fFmf6 X-Gm-Gg: ASbGncujMuArvVPC7KCklmGKoDFG4zl8kIoQmJg6sOmH1eK/ADkNCD+451xMTypyqQf y+hd5OeaicbC54QneOAtPRnMf0RxBCK85bDFk5DtKr0hfHivWZphndmu6GYSVPfD32mhiJ9U/jg Zd0DO004rkq1O+ucmDgQWaEMDmlQVNn/aKM3TpFjlEPEBIK3o/tuEpp3mhANX+vTkJXT4h6S/Oe CxjJJWZUlASULMUxm1XkIgDmLpt3sOBRKee/jJs0+ntXyPuns5MaasQ7EI4SSj024aj6oPq6tK1 IfNqJvSWrlufUv8ndujgKb0Z0nnJZ01kx9oQGpxGCesJ9+mdpch7nLvoy2YYRvPEqBFuSELe1Nq e5y3ijy9OVXlO+W2qLjQdAQ== X-Google-Smtp-Source: AGHT+IEzzm59LKTcy5TIr3J16GZfmyTzdXLT4TOGrDFr0a+Jokyn9yihXZqCJDVTaVIdTXf6pAHLvg== X-Received: by 2002:a05:6a00:2e92:b0:748:ef3d:3247 with SMTP id d2e1a72fcca58-75724876e61mr1791665b3a.20.1752644056113; Tue, 15 Jul 2025 22:34:16 -0700 (PDT) From: Pierrick Bouvier To: qemu-devel@nongnu.org Cc: Alexandre Iooss , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Manos Pitsidianakis , Mahmoud Mandour , Gustavo Romero , Pierrick Bouvier , =?UTF-8?q?Alex=20Benn=C3=A9e?= , rowan Hart , Richard Henderson Subject: [PATCH 4/6] contrib/plugins/uftrace: add timestamp-based-on-real-time option Date: Tue, 15 Jul 2025 22:34:05 -0700 Message-ID: <20250716053407.2814736-5-pierrick.bouvier@linaro.org> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250716053407.2814736-1-pierrick.bouvier@linaro.org> References: <20250716053407.2814736-1-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=2607:f8b0:4864:20::430; envelope-from=pierrick.bouvier@linaro.org; helo=mail-pf1-x430.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 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: 1752644168022116600 Content-Type: text/plain; charset="utf-8" usage: timestamp-based-on-real-time=3D[on|off] Instead of using number of instructions executed (which is per vcpu), we use the wall time for timestamps. This is useful when tracing user mode programs as well. Signed-off-by: Pierrick Bouvier --- contrib/plugins/uftrace.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/contrib/plugins/uftrace.c b/contrib/plugins/uftrace.c index 58805b7884a..7bf658311b1 100644 --- a/contrib/plugins/uftrace.c +++ b/contrib/plugins/uftrace.c @@ -93,6 +93,7 @@ enum uftrace_record_type { static struct qemu_plugin_scoreboard *score; static uint64_t trace_sample; static bool trace_privilege_level; +static bool timestamp_based_on_real_time; static CpuOps arch_ops; =20 static void uftrace_write_map(bool system_emulation) @@ -445,7 +446,25 @@ static void cpu_set_new_sample(Cpu *cpu, uint64_t time= stamp) =20 static uint64_t cpu_get_timestamp(const Cpu *cpu) { - return cpu->insn_count; + if (!timestamp_based_on_real_time) { + return cpu->insn_count; + } + +#ifdef _WIN32 + /* + * On Windows, timespec_get is available only with UCRT, but not with + * MinGW64 environment. Simplify by using only gettimeofday on this + * platform. + */ + struct timeval tv; + gettimeofday(&tv, NULL); + uint64_t now_ns =3D tv.tv_sec * 1000 * 1000 * 1000 + tv.tv_usec * 1000; +#else + struct timespec ts; + timespec_get(&ts, TIME_UTC); + uint64_t now_ns =3D ts.tv_sec * 1000 * 1000 * 1000 + ts.tv_nsec; +#endif + return now_ns; } =20 static uint8_t aarch64_num_privilege_levels(void) @@ -849,6 +868,12 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin= _id_t id, fprintf(stderr, "boolean argument parsing failed: %s\n", o= pt); return -1; } + } else if (g_strcmp0(tokens[0], "timestamp-based-on-real-time") = =3D=3D 0) { + if (!qemu_plugin_bool_parse(tokens[0], tokens[1], + ×tamp_based_on_real_time)) { + fprintf(stderr, "boolean argument parsing failed: %s\n", o= pt); + return -1; + } } else { fprintf(stderr, "option parsing failed: %s\n", opt); return -1; --=20 2.47.2