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 44CE815C158; Tue, 6 May 2025 21:30:55 +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=1746567056; cv=none; b=dis/ycIM+HxMLgCryWreCOSd85PEcF9LhDFeHcwaxBzVDZMokuf1VfDPfXvlCY0/HnzcHdWVRFOwMpmUEaj1DHn4i1KssuLnO8UVkoImFS9CO6Ex7C+umbRTcHIlMNjz76gli5yI2mXpeQqxG7oeXl8XZNLkHpPCnILcGrvpO1Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746567056; c=relaxed/simple; bh=LF4XyTkcgWoicn7uCeNsDcChHQo5BLnimhFxKCYZDII=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=YE6c4IJYEZ/pTYfJmtlFTFj0Cc+GIOEWrB9ENStHbVANy5skPnj3uV5BIGEnCAu60q3mSDSGsUJ8Rqg8V59AT79aJ3bMWUkUC5l7GXsOs81OfuP1vl9BIp2qaRWdKHVVYMLE65Cp3d+lIUi03oW53JxX2XLXiPBSOla9CAwTukM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fNluEQFk; 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="fNluEQFk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9DDAC4CEF0; Tue, 6 May 2025 21:30:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746567055; bh=LF4XyTkcgWoicn7uCeNsDcChHQo5BLnimhFxKCYZDII=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=fNluEQFkkeCwvPrfzIVWjNz/fxO7XClp4/+43s1LbqX5aWnCweVwRbbM2lIYlPpCz pE4shwMICs31y+e3dEBL0qFiTMcHcQa6DaDtdijSyzGWXbbjB0hMmZioDeseLr5LdV Bqm8W7lsCe7nxWxPzYGpJS2OEXeEOpbTANCxdQrXEirS3KWCwLf6Sh79/T5nqBXM+D A38Hy9YlwRtnXh9GEgv+xaYXKVMviIpE+Tr/vWwHMxGfW3rwbvDmRokxWBFQRkA1OV PY8L5UOfl7dsosAq05DeIbgW+tayqRx9TUDyQcdHmAp1X11LklEHfM946KdUBE/zBm 8dwZM/sqTM0KQ== Received: by mail-ed1-f43.google.com with SMTP id 4fb4d7f45d1cf-5f6214f189bso11644059a12.2; Tue, 06 May 2025 14:30:55 -0700 (PDT) X-Forwarded-Encrypted: i=1; AJvYcCU9Vl52kVv/70R6+EyEu3ZXQVG9oe52KjT2xoaFVEycLdnJXnRg9r3Vb+BkiHgjTbrCY3qDsyKP/8D67sYBHzPL3g==@vger.kernel.org, AJvYcCW6Ej8ym7tYRb7U+raqhSYy+hxTBb95lq+3+bit+Ztwx8gu+Yg9Zu2AN0I/ghg1Wira3oGcbSny8Qk=@vger.kernel.org, AJvYcCXa3BrX3BHF0PmUO1LckLG83grje/E+T8Yyz5bKlVjw+jqgStX701dGx6Go+mmmtWgqdnVhdt7DleWGhcW+@vger.kernel.org X-Gm-Message-State: AOJu0Yw8tzOLkmv3NJZzYMKi9PgdZ1OcUPIRcEeqWd6SGQKRUj651eCy 3/F+RRz/3T1N18rtHDmrpPnmyEm4A9hIV6yCfc8V8JO1r7eumYn7zuDqDM5xsvXrHhkII8YGMeY mk0ggZ2gp54xinE5jlkz8efySAQ== X-Google-Smtp-Source: AGHT+IEnd5G8SKlNRW5w4iFO/mLcDtaGwA9ndk5+resb4iEheEVI1rHK1zs74rWur7nF5rXXl5sEz573M/0kmSBOH+I= X-Received: by 2002:a05:6402:1941:b0:5fb:9f73:d0e3 with SMTP id 4fb4d7f45d1cf-5fbe9e29f20mr703063a12.18.1746567054358; Tue, 06 May 2025 14:30:54 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250407-arm-brbe-v19-v21-0-ff187ff6c928@kernel.org> <20250506154702.00002b57@huawei.com> In-Reply-To: <20250506154702.00002b57@huawei.com> From: Rob Herring Date: Tue, 6 May 2025 16:30:43 -0500 X-Gmail-Original-Message-ID: X-Gm-Features: ATxdqUHdtGklHSUrSP-OlxuranOH14q1bQqj56TmZsXDcW7Zo0EE4YurWkIdGsA Message-ID: Subject: Re: [PATCH v21 0/4] arm64/perf: Enable branch stack sampling To: Jonathan Cameron Cc: Will Deacon , Mark Rutland , Catalin Marinas , Jonathan Corbet , Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , James Clark , Anshuman Khandual , Leo Yan , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, Mark Brown Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, May 6, 2025 at 9:47=E2=80=AFAM Jonathan Cameron wrote: > > On Mon, 07 Apr 2025 12:41:29 -0500 > "Rob Herring (Arm)" wrote: > > > This series enables perf branch stack sampling support on arm64 via a > > v9.2 arch feature called Branch Record Buffer Extension (BRBE). Details > > on BRBE can be found in the Arm ARM[1] chapter D18. > > > > I've picked up this series from Anshuman. v19 and v20 versions have bee= n > > reworked quite a bit by Mark and myself. The bulk of those changes are > > in patch 4. > > > > A git branch is here[2]. > > > > [1] https://developer.arm.com/documentation/ddi0487/latest/ > > [2] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git arm/br= be-v21 > > Hi Rob, > > Expecting any changes on this? Anything specific we can do to help then = shout. I hope not. Still waiting on Mark R's review though... I'm sure there will be something and since perf drivers seemingly only get reviewed once a cycle, I guess it will be another cycle... Sigh. Rob