From nobody Mon Dec 15 22:26:46 2025 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (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 9A92C215798 for ; Tue, 14 Jan 2025 23:13:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736896420; cv=none; b=ryxv4dQJkUsqPfrOsG3nSWOV51gmgkr52rJxAq+Mg29qwx8urHBijnSSq9gFRe0wR9o739B75qsx7NtiBPsWAmQI2YIdTaezp3ugSo5cWG61l0r1pb1xFNVRa6tkCoh4yj3DSfAbMFrWX29lx4HQssETxf5TIp2nl7zMLXpWHp0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736896420; c=relaxed/simple; bh=A/eR8uR1yvM5eqZV/QlIrCo0vWCFnc2aKBHW8D8fiZw=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=PGs8HKvNK+3YJtDrZ/HlBX53kUsVoIUzgB/BVH4yn/LcfK7TvYVUyXRSAwrXioEVs5VV94quHSAvHWMEdt+BoOaUf68gkpoOYU7hQo6o/1fVCbQV0sRXPwK1NWnlYUyhwVkQIWmPq0WGL4tfnI2XWlXUUt/DcgQUjnKm/yEQ39g= 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=vJII4XFE; arc=none smtp.client-ip=209.85.219.202 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="vJII4XFE" Received: by mail-yb1-f202.google.com with SMTP id 3f1490d57ef6-e549e7072fbso11553096276.2 for ; Tue, 14 Jan 2025 15:13:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1736896417; x=1737501217; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=LDCtpsQOxkSPlmEY/69U0PEtnOYFr9Y2An71RRy2l+s=; b=vJII4XFEosutUic40r1P1ee5Xpoiq3H+NgXbxDHq2i6sv0OJesTLW/wPVEaygjbUWN eJpKUY+TQ6y+1MEUCwYqDL2oMTtOzlwi9mT5t6cQSwXWk0NIvj/lLQ5Ky9cSjKui28t/ 4BWaAwJPAHyLKePW941RqFYqqO0CrO2IoRrM2y2NJiK/pbRdYHsmFSyCdc1KP/dPZFxk lewKwHWqKUqlUI8hmefANKJoQ7f21vZ+WJcYjSJOF9f+iUNCGySZ4tnDbb3SpHKxlhmK WeoYLjrtoRLP4G40nZc0m714DxqLOCvTWj1F226QQbSwwSDRsU8/w4sCoVfV2ZxbpopK VenQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736896417; x=1737501217; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=LDCtpsQOxkSPlmEY/69U0PEtnOYFr9Y2An71RRy2l+s=; b=StXFnKJX4ih5Z2EM7Ac3yCFedxaiUXmSnUL3jHFxDTbKgYQaC+sQqU6HKAeTpDTZNQ 0xft927qREcoS0G052KSvAvbATmVjNJh4no5Wzj6RtN9Svpq47IltntM6BJn11NRS4t6 QB2OTUQnqW1D8aMUgPlLstUCMph5rzYkZiwBDkDCky6EqqcTD5CIib2sY2jO9D0qptoI utXclcv04BDm2IZumgxR1xk6MIxN4/Ev2GryVFQ0tNo/Ado9KuuQMfPK8ueay1Jl69KO he6oNgauGfMKTPWuxzr9hFrDm/2o5NystLtqt/TY5gB9WlCDdv0809JIIH4ujSKiOC4K 1pCA== X-Forwarded-Encrypted: i=1; AJvYcCWZ6z62U5LTpTNYDOKWRBhP+e2QZTsG1WRwdrHoU1xG4NRCGabOsYBL8MA/58DqEnJF8J0IKU91HnZzglY=@vger.kernel.org X-Gm-Message-State: AOJu0YyMo/LM//SUuzFftdKIG63h+ogPiJM8+8UrW7mrvC/nTmSsudYb MLw1Lv8oMGF2qlYkhbGRx7rd2FS4Jhox87/d+Wjpcqq4QSiHul+iNvqt5hrQ99/x6ON3Nf3izVp BW+kiBQ== X-Google-Smtp-Source: AGHT+IHXFfkYqmyJHnA919HVCDNWdFFmo0150gT0EPvhDiX6howpfgKkpYwXQYkO3qFXWT31gATzIw/H9nFh X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:b3e8:96da:3fa1:5494]) (user=irogers job=sendgmr) by 2002:a05:690c:4b85:b0:6f2:8819:2318 with SMTP id 00721157ae682-6f53130b447mr711217b3.5.1736896417686; Tue, 14 Jan 2025 15:13:37 -0800 (PST) Date: Tue, 14 Jan 2025 15:13:29 -0800 In-Reply-To: <20250114231332.13419-1-irogers@google.com> Message-Id: <20250114231332.13419-2-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250114231332.13419-1-irogers@google.com> X-Mailer: git-send-email 2.48.0.rc2.279.g1de40edade-goog Subject: [PATCH v1 1/4] perf evsel: Reduce scanning core PMUs in is_hybrid From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , James Clark , Ze Gao , Weilin Wang , Jean-Philippe Romain , Junhao He , Yicong Yang , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" evsel__is_hybrid returns true if there are multiple core PMUs and the evsel is for a core PMU. Determining the number of core PMUs can require loading/scanning PMUs. There's no point doing the scanning if evsel for the is_hybrid test isn't core so reorder the tests to reduce PMU scanning. Signed-off-by: Ian Rogers --- tools/perf/util/evsel.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index bc144388f892..ae20691bbfae 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3856,10 +3856,10 @@ void evsel__zero_per_pkg(struct evsel *evsel) */ bool evsel__is_hybrid(const struct evsel *evsel) { - if (perf_pmus__num_core_pmus() =3D=3D 1) + if (!evsel->core.is_pmu_core) return false; =20 - return evsel->core.is_pmu_core; + return perf_pmus__num_core_pmus() > 1; } =20 struct evsel *evsel__leader(const struct evsel *evsel) --=20 2.48.0.rc2.279.g1de40edade-goog