From nobody Wed Dec 10 20:09:25 2025 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 9EE6D2882CE for ; Thu, 13 Nov 2025 03:20:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004061; cv=none; b=ugieS5bX1iq3NIdVmH1krSjMfHnY4fG3LalmSHBU2W213Bf+u+eY38w7tsem+43aMU/1D4Npc56ytMPgCyhvnlydByrJvClkKJa+s98pmp7QFVZR56fq2JYAdxJyi7YFFA2x2xN4YNnBtwcxZs7xX8Ch+CN4WJ4HeskKbSLMdI0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004061; c=relaxed/simple; bh=fjbZFVZ9kzMDzkzeahbLVTlZyu+IhPBVWCZ/lkymL2g=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=RSbCuL57trdpa4y969I/hwtDoNJ+lWb0VCj11Ts2Tibn9zbJUYcLNVPwR4av16H/lDsZjPdLj6gmEjG1WrpiyHsibEOrlHexY1WH1jDNTS6zICB6GORUrwPd48oUYlL/KusVKx2NbJhs/lzx7E55F7gRmG9/rg2aiJcNrX9L9oo= 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=Fn9tMqBt; arc=none smtp.client-ip=209.85.214.202 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="Fn9tMqBt" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-29845b18d1aso4336825ad.1 for ; Wed, 12 Nov 2025 19:20:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763004059; x=1763608859; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=Yus/JHJRfdxmiJc2DFKCHcb270q3oFWZc29urA1fcyc=; b=Fn9tMqBtSEop8xGyN+AnsCvnbtMKnTW1trD11CVCt3z+PVygOH4SM5eSlO7N2Gi/ZA lD4GTOJkFoUiTAykU7+6sgx9KmCemHY7j0QRDE55wboGhAFQvt6reZZsN71xNPlqlyeR pEVTi26cFGmeuTRoE4uOaeRw2gBucAwANVAL67BLYkryu+AMa2DJgF/JTkXlx/GiiM5L wVL9V/gm21tMqyLu2tYklgFTJS6ytqB5npdOOez1LtJwdgccYRo/V0fTnW6HPJjPFr+9 qGM5TLtus2EGfZJF8VDPnAGrrtYrjqPAaCJitn7lcpltmLftPVdgjbas7Hdxcqy8mfnZ nHUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763004059; x=1763608859; h=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=Yus/JHJRfdxmiJc2DFKCHcb270q3oFWZc29urA1fcyc=; b=QXwD5WGz82ufEI+GeI+bUccC5jfgHLwWlsmLGTwyPdftA3/j+Kg/ldozCStTppEJEf ZYTTj1znqhhCFdcQTdR3KYtFJFSbPt2vb14PWt8elcGC0nyniBN6dBNG5I7v+7Hqe70a C9T/5gMpyVn8d6xEI+au4rliims5GsFcXVX2yyyXCjJWbf6MzB2D/xvhZtbO3tMgP7Lc Z53/CceGAAfHiyFwT5S+7eeM1LxrFjGzEo0cCuuIhoYGJbjRbTt29hIZJQMgcQGRxWXv k4qaaxcSqQ58z3ohJ2f2IDR6UEEQjLEOP8EEluaypyDMvm0/jusfYNR0IF5teiEq/vWc gFlw== X-Forwarded-Encrypted: i=1; AJvYcCV/b//FINezIlZi0viorwQ8sCLXvKYQ5cMsw0OWd1uKQnLCHEusrtqutqrLlECWc5BieiFT3gP6CnPOH24=@vger.kernel.org X-Gm-Message-State: AOJu0YxtX+JD7YKb/wXQvtcXJVSbbpdpn34X+dzr9pn85BcK3TWg5RTq nVUzTXFg3qBdjBN5r0mSOQqNbB/8hpidVm3qN6TIkUI/m8Qg+pKklpc03nvOHKClreC+YfiYv+c svQzvwY95Qw== X-Google-Smtp-Source: AGHT+IHOc4/ckeRmxoGeVZwtx6KFPt3w2ttsOfqKDRF0iQ7MW6VW8cxP/JuYnx3/yzVmxD61DqaDDrtvcmRj X-Received: from dlbrp11.prod.google.com ([2002:a05:7022:160b:b0:119:78ff:fe11]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:d2cf:b0:27e:e55f:c6c3 with SMTP id d9443c01a7336-2984ede3affmr67609405ad.55.1763004058907; Wed, 12 Nov 2025 19:20:58 -0800 (PST) Date: Wed, 12 Nov 2025 19:19:50 -0800 In-Reply-To: <20251113032040.1994090-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251113032040.1994090-1-irogers@google.com> X-Mailer: git-send-email 2.51.2.1041.gc1ab5b90ca-goog Message-ID: <20251113032040.1994090-3-irogers@google.com> Subject: [PATCH v8 02/52] perf ilist: Be tolerant of reading a metric on the wrong CPU From: Ian Rogers To: Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Benjamin Gray , Caleb Biggers , Edward Baker , Ian Rogers , Ingo Molnar , James Clark , Jing Zhang , Jiri Olsa , John Garry , Leo Yan , Namhyung Kim , Perry Taylor , Peter Zijlstra , Samantha Alt , Sandipan Das , Thomas Falcon , Weilin Wang , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This happens on hybrid machine metrics. Be tolerant and don't cause the ilist application to crash with an exception. Signed-off-by: Ian Rogers --- tools/perf/python/ilist.py | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/perf/python/ilist.py b/tools/perf/python/ilist.py index eb687ce9d5a6..0d757ddb4795 100755 --- a/tools/perf/python/ilist.py +++ b/tools/perf/python/ilist.py @@ -77,8 +77,12 @@ class Metric(TreeValue): return perf.parse_metrics(self.metric_name, self.metric_pmu) =20 def value(self, evlist: perf.evlist, evsel: perf.evsel, cpu: int, thre= ad: int) -> float: - val =3D evlist.compute_metric(self.metric_name, cpu, thread) - return 0 if math.isnan(val) else val + try: + val =3D evlist.compute_metric(self.metric_name, cpu, thread) + return 0 if math.isnan(val) else val + except: + # Be tolerant of failures to compute metrics on particular CPU= s/threads. + return 0 =20 =20 @dataclass --=20 2.51.2.1041.gc1ab5b90ca-goog