From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3AA593D646B; Mon, 9 Mar 2026 14:57:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773068244; cv=none; b=U6Yzeuw+kNvaUSu9MrMO04QZ+CZej8CHuBfOMyBD66x3KdSDevXUvYxwxBGNLEx1p40AksI1dUmDJtTXerYneOfWfoVOzgmmECBiahsPNAwNJK3Mq5jywbFhgCyi6Fm3DZJYa+0EmYkqIc/hgnQ8+LTVZN/kp+W8oYwBDRqWkys= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773068244; c=relaxed/simple; bh=SgAKIGd1iyjSqOuc5m1IuxF0zoIDLNEjC+79iZslBeM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ZAA6izS9qKdWLucv54bygQJuzxNdTP0ZAlEEWWam7DbB8hjBKoFwQUN35IGmUBPhJEWF5rmqFcAI4JSQTMzJA7dodwSkEhMJ8cuu2bt3rJN2Hpn6EZJ9KE1S44cTuVmZC6FDEVGDiJ1+ANzQveerzjVM1+fSj+ZU11A2TvxauJY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CF2Ov3kg; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CF2Ov3kg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9C518C2BCB5; Mon, 9 Mar 2026 14:57:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773068243; bh=SgAKIGd1iyjSqOuc5m1IuxF0zoIDLNEjC+79iZslBeM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=CF2Ov3kgsHeC08FnPBZF3KmDxdgBTG4A5A0X8R8eZ9JMfaHW9V79VlS22JtO677Wo qq5IkoqzHqjxPcGrkNAebjswbWx/lO7NjD7Q+fMTdXYCQS+J8XHRE6w6Px+K8+cKXk mrRUHsMqkMkRsPiL1KMdc+kRx8SeIxK6ceXgRPmBXPvP1ncLL/pUd9CWRzLv315Q9I rz2G+XYy2011Gpgi+6RVoYHOepnoAg5jW0qYWIV/tI3eg3qO+re1rv8zOZxMpJ3KNL Z7CdSci9eeH2FHWs20eSyyevRAbrYEx8O/CqP7GbKFhLtn1F3tAmmxCBG6kg4OkW2T k38OGNSgVOoTA== Date: Mon, 9 Mar 2026 10:57:22 -0400 From: Sasha Levin To: Ian Rogers Cc: Greg KH , Jiri Slaby , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Leo Yan , Adrian Hunter , Alexander Shishkin , Ingo Molnar , James Clark , Jiri Olsa , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: Re: [PATCH 6.19 027/844] perf metricgroup: Don't early exit if no CPUID table exists Message-ID: References: <20260228173244.1509663-1-sashal@kernel.org> <20260228173244.1509663-28-sashal@kernel.org> <072e2a07-5c6f-47b5-9695-0a3ffe854ac8@kernel.org> <2026030924-recount-halved-605d@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Mon, Mar 09, 2026 at 07:53:10AM -0700, Ian Rogers wrote: >On Mon, Mar 9, 2026 at 6:40 AM Greg KH wrote: >> >> On Mon, Mar 09, 2026 at 08:40:33AM +0100, Jiri Slaby wrote: >> > On 28. 02. 26, 18:19, Sasha Levin wrote: >> > > From: Ian Rogers >> > > >> > > [ Upstream commit cee275edcdb1acfdc8270f80e96f30750b633220 ] >> > >> > This breaks (userspace) perf: >> > $ ./perf stat -a -d -p 1 sleep 5 >> > PID/TID switch overriding SYSTEM >> > Error: >> > No supported events found. >> > >> > Any ideas? >> >> Is it also broken in 7.0-rc3? Or is this only a 6.19.y issue? > >There was a fix: >https://web.git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/commit/tools/perf/util/metricgroup.c?h=perf-tools-next&id=c5a244bf17caf2de22f9e100832b75f72b31d3e6 >was that applied to 6.19.y? It's not even upstream yet :) -- Thanks, Sasha