From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f202.google.com (mail-dy1-f202.google.com [74.125.82.202]) (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 0F06E2D9792 for ; Wed, 3 Dec 2025 21:47:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764798434; cv=none; b=HONFM1i7w1IS8oP13825OrqahxJ2HpwMk2MW6pkjLpDsOal9TrMGGFvdKN8hmIWqU0wDuMX0JP1j34IXdl0V8vyzfTrGvI+bOkq67KAgjIjo9BpO9ALEuJQzbIG9ftXGQy4wKT5DHGRXn0uQwYO2DgdvkjvYz+tQAc8ZPT13KCo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764798434; c=relaxed/simple; bh=gR16hXUGmvBYon0NXkKR6UIc51eic/vdJdsFwlnfBmQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=GlpzFDf/B/np1l8Q3Z3rVy3uNvMT7n5OIkdcAXHuRiMRQNIwj11OAC7xFrpDGDywjspGkYOlIIJUX1c1nML83n1yUCs3V0cB1aXNnmSY+kLrWVObs1LVkZts7JyhsiM/5TXF1E0lN7+c3XQb31oXNHI3DtyJOnWrYUPjoCC+Ju8= 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=EuQYnEEo; arc=none smtp.client-ip=74.125.82.202 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="EuQYnEEo" Received: by mail-dy1-f202.google.com with SMTP id 5a478bee46e88-2a45fea6efbso1718001eec.0 for ; Wed, 03 Dec 2025 13:47:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1764798432; x=1765403232; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=0JLDB1+Famcj/1uPLs4rB9WCCpUFUNy+DKkLH/GTWVU=; b=EuQYnEEoYR/aadRRh9mHXpXFwYPGTK0RRSgEVvj7uI0Ug7WJpizODd3TRzm8ySSSJI bURS5zam3vbdSmbw9bXCndKQkhMUywo8Cr8SVdcGPcxLc18vHhPrgk9vX7byD6JtllsZ sLeuySfsNGuLFvO10RR3eB+t6+lKrwqaPA9CxmEdINKkH9i7tq9S+1+z0ToT06IsIuet WtIjLwMICDVdHiIkwPDVZvmEP4pXZA9v7awpPF0dlAqr8a23ewTP0O70XSnnZNlrLMYf icYxK2Uwq6BMLm2LIxMP6oFpWetHq9dIKbvGQZVae4mnM9y8putQi0reQtxo05aSwC6/ 87dA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764798432; x=1765403232; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0JLDB1+Famcj/1uPLs4rB9WCCpUFUNy+DKkLH/GTWVU=; b=D5Cxl/ytS7qMBT2W0PYGB1lGvgMwjcqZ+Njr9Lxh+Wpwjqxsk8n9bDRsR6Qm4u2Nuo cst05RFEwBWj3d+CvJBMvExwic11dvQr8AWMYK9XYTKCb1L/fsuYqTWfK4P/uVIhvkzR Zhz41sSve/3OUuKYiQf62V344eZTUrxyP6k2fUGMB5WXeCLAx+srtip+iqOn0kDhj6PT LM/4xRvltfsF77lclyhcpPMRBhBZ6+926AggYD37smUMS3f4a3ileQcgRykd09iUhIKM v60K4u6++wn9sGgczJWCz6vqRsrNpPeaH5CNauVo1RodhVW7tNvK7Z+pVyHffks4CS+4 +dyg== X-Forwarded-Encrypted: i=1; AJvYcCWY4nbKVROyETYW3vb+KvaKi+SnxqcjRoKQmeyU0aZGgpJJO9ST/0eQ8XNwjLPrNjHamV8nachemh8VCc0vPLIH@vger.kernel.org X-Gm-Message-State: AOJu0YymciK9DrCH0Q7s19U/pI8kwWY6GnDOT2/qU7Dt9wVFZQ7DD2ky KtA+ZT/MzEK9RfFtV2p6v3BXrX8owYES9v7E4WsOUsRT14YNwmpuxnqqsIGmHhZWtNPeSRlezSC 4GTQ4l81hRw== X-Google-Smtp-Source: AGHT+IHu/jj6pSf2/OU7jAgX2yW38AXdSzMKTldoaWwQfMGHkoQ8ENZUp5NPZM91LnGiAdpVMi15XVZwV4So X-Received: from dys5.prod.google.com ([2002:a05:693c:8005:b0:2a4:51e8:c5c8]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:60e:b0:2a4:3593:cca7 with SMTP id 5a478bee46e88-2aba3394a44mr812863eec.4.1764798431987; Wed, 03 Dec 2025 13:47:11 -0800 (PST) Date: Wed, 3 Dec 2025 13:47:00 -0800 In-Reply-To: <20251203214706.112174-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251203214706.112174-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.177.g9f829587af-goog Message-ID: <20251203214706.112174-2-irogers@google.com> Subject: [PATCH v2 1/7] 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 , Thomas Richter , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ingo Molnar 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") Tested-by: Ingo Molnar 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); -- 2.52.0.177.g9f829587af-goog