From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8BFB3A2576; Wed, 8 Jul 2026 20:04:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783541049; cv=none; b=p9D4+itcNECJKFHpog45T4DOOL/Z1zkT+WTmmpKmEL6x/IBbt3z7YH7Oe4fNPUGBdJJcq6U1aEUKvFsHfqVO7oUwvYmzHTABQQ1I1XPO7c6UvEanG2QXWMcMDYEPm53zwzwelJ54DpDsvtVnq415XHJY4grpEk9zuftbcU/nEQA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783541049; c=relaxed/simple; bh=Es/hOEe2eha3oLo/j4ZG3FR5SzzwXwIWb//KDz1MAFM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=j73y/rTPoAoV0Vq9gKQOhGdz6L76hA5KFWvh93SEvhX5SBNiUQnWByN5dned0OmXG81pn68bs36FFQdpQ8X/HnfLc97L7pSGHfah6KnkaE2Uarx10V8x1BXQ6EARLxpyxNUS6Hy/ZSjOHBc5F5Toa9UvsA3ooMqOrkvbWrSY++w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=onbRef2p; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="onbRef2p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 425801F000E9; Wed, 8 Jul 2026 20:04:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783541048; bh=ZGqSq4qLXg5b8NNaWFCVf8IMNDeie67LZTqKvF/FjeQ=; h=From:To:Cc:Subject:Date; b=onbRef2pkJmpUd7g6erRQmezU3aB0rwr9Tpd+oU5XkUx2XqMw7AV01PveLN17iFDb COFD9UcKcFBP6YBxAGrAdi0RfKZGvrPHO+GS7i65ghyGSN80oyAjxn2Kd/w2NovP/I 6hufd5C1nUIquda3VDro0t0rKsksXGiUcz6qf+ePbOs0fg8FjvURB8/eeLj/AlpHOV ME23IIk8n4qjcSzfHI9WzVZJHsr6ar4rOA0nLbmJv80nWDRlKiliO4pLulnw7y/WIJ mhHbIqg1hWJPhoOUJdXeA/zeJF26YW6HSnhzYXSMbJ84bPCxaOMimU1GPa6EJlkj64 7XssBudxgzPdg== From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ian Rogers , Jiri Olsa , Adrian Hunter , James Clark , Peter Zijlstra , Ingo Molnar , LKML , linux-perf-users@vger.kernel.org Subject: [PATCH] perf stat: Do not open cgroups for BPF counters Date: Wed, 8 Jul 2026 13:04:07 -0700 Message-ID: <20260708200407.1240640-1-namhyung@kernel.org> X-Mailer: git-send-email 2.55.0.795.g602f6c329a-goog Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The --bpf-counters and --for-each-cgroup options use a set of shared events among the given cgroups rather than adding events for each cgroup respectively. It only uses cgroup-ID to compare and calculate the result. So no need to open and keep FDs for cgroups in BPF mode. Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 92cdb2df7285befb..49e523058185b753 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2888,7 +2888,8 @@ int cmd_stat(int argc, const char **argv) goto out; } - if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, true) < 0) { + if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, + !target.use_bpf) < 0) { parse_options_usage(stat_usage, stat_options, "for-each-cgroup", 0); goto out; -- 2.55.0.795.g602f6c329a-goog