From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 108B113DDAA for ; Mon, 1 Dec 2025 23:09:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764630561; cv=none; b=O/F5ixcUiV16OXtyxLJuoxwMJSsOn0Ex5B/Fbc+VhGQPhBOQ47fK75nxjkRzd5cIbBVmdhCayokh6pw8rHDUsQYKF/dLWrU/8jPG1WtevVF3EwTp7vCdGi3V4M2CHqFe4z1RPZMCQE7BoCkl3bShZ/Jw5CzZraWs3ybTrIbZYC0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764630561; c=relaxed/simple; bh=5vg+V2entINAiiEpQ/q34TEWfHyNUppODe0zBuoZe/A=; h=Date:Mime-Version:Message-ID:Subject:From:To:Content-Type; b=FPHqH5ka6p73T/1iyb0Ks3Z5vIyhLoKN7Hoq2U9LR6q/PLIWJhGLMmKdTOTdrjsHgwqW2pbiIPU8WqUBpJiSwSpT+VMePbWTfnDEZUdNmBG4UGvE9nk8RM9RwCOjyJ/aQzkRFhtfGrboAUekeZMcj44yWxYpz98xZ3YyMd+QCiA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=eIyCb4xR; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="eIyCb4xR" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-bce224720d8so7344536a12.1 for ; Mon, 01 Dec 2025 15:09:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1764630559; x=1765235359; darn=vger.kernel.org; h=to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=pyTN6HqjnDsVWIvLCcWayuVvyVE02Kj+ZHxb/5CJn78=; b=eIyCb4xRppqKkT8o0g7dbV7Xhm2dFFg8olhZ7MKLgmHJ0or5kV6lyjj1rcJytSF/7y /F/Ku5BF2OhRcs8RvEEVWqZrmr+qwuDkG6jpXuc6byLMT2pyuQEmHDxtLxzjvmSMOaiQ WEXR+hKRlZe5Fc+P3pJsG9ZfmroH41WMsB/Ih2j9QG1YRkK9ffaCI5zsr3LTC1FnOuCA aqOymIrkvkPZuo3JMvoDZbOAnnMuWBh4jx9tqk/b4oce1yfIdHotU8GlQcmMGjwtsqtp EvMHVL3dzvRrbkjtF0EaTlpeJ9eycXUsw86/OmFJ6V140rqextpJqgIPra7reOakrPEJ VSqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764630559; x=1765235359; h=to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=pyTN6HqjnDsVWIvLCcWayuVvyVE02Kj+ZHxb/5CJn78=; b=uBhj38AetPcytoBM6lEaDl+BB4lovIuCuQIFLqaZpSDpk0HELthFZgclNTn3a+oPWm pUCkKSz9V3wvobVAU857J/0XuFKYzZ+wg/2Ec+9SCUhoS9Dgr4URaTsueMcrTYXmJnHm qZ25Vw8nOaLr4bhFCVeg9bU/57WhjT5J+hD7HHT+mYQpSbzAClTyiCDVHwwEkvKPm7fP wKJyvilU0/7xa5ENE/9JlHyz8Q7Lx0/XCG/GYSCxWv57jFS5+rXpzeplAY8w1HG0BkZx pB25iqsclemqqEVcL7SO/qD0hD/0UyQQRGJgaZ8lCrRndemb6EDMo1h/lQb0bDBBnqqk PySg== X-Forwarded-Encrypted: i=1; AJvYcCXmyBaUyNHUFmWsQdmuDhw0yMXFTxwpIFzWseM6zbr95BYt9eL4F8Doyax+eA3+01BzT4z/JbV1fsrLRepRtpvx@vger.kernel.org X-Gm-Message-State: AOJu0YyqtD3gnUNoI9VTuvTicNYk7RI5lCT4WZGZQYrXCrPxOPzqHX3z S3eKFnlOk44C0gORdSFVH44KeM+tbx4hyXr31Q+DC+SOwB8FzasIVBxLQz9J0DR0UE9+EtF/IOC NQ8melmILaw== X-Google-Smtp-Source: AGHT+IHne5jiJnAiQjXUjNl66YdlmgbnT68Is+WQjUySyZRd5zBSWYXxZXTX8RYp7Y51hvsEBBTX5Nv01QHX X-Received: from dylq24.prod.google.com ([2002:a05:7300:5998:b0:2a2:2846:c507]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:320b:b0:2a4:3593:6452 with SMTP id 5a478bee46e88-2a7190aa81fmr26728655eec.2.1764630559213; Mon, 01 Dec 2025 15:09:19 -0800 (PST) Date: Mon, 1 Dec 2025 15:09:01 -0800 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.52.0.158.g65b55ccf14-goog Message-ID: <20251201230904.290733-1-irogers@google.com> Subject: [PATCH v1 1/4] perf stat: Allow no events to open if this is a "--null" run From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" It is intended that a "--null" run doesn't open any events. Fixes: 2cc7aa995ce9 ("perf stat: Refactor retry/skip/fatal error handling") Signed-off-by: Ian Rogers --- tools/perf/builtin-stat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 5c06e9b61821..6410115ed9c5 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -923,7 +923,7 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx) goto err_out; } } - if (!has_supported_counters) { + if (!has_supported_counters && !stat_config.null_run) { evsel__open_strerror(evlist__first(evsel_list), &target, open_err, msg, sizeof(msg)); ui__error("No supported events found.\n%s\n", msg); -- 2.52.0.158.g65b55ccf14-goog