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[86.49.107.50]) by smtp.gmail.com with ESMTPSA id a9-v6sm3898919wmf.28.2018.08.30.20.14.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 Aug 2018 20:14:27 -0700 (PDT) Subject: Re: [PATCH 0/2] ARM: dts: socfpga: Add support for PMU on Arria5/Cyclone5 To: Dinh Nguyen , Florian Vaussard Cc: Mark Rutland , devicetree@vger.kernel.org, Alberto Dassatti , linux-kernel@vger.kernel.org, Florian Vaussard , Rob Herring , linux-arm-kernel@lists.infradead.org References: <1488297132-21553-1-git-send-email-florian.vaussard@heig-vd.ch> From: Marek Vasut Message-ID: Date: Fri, 31 Aug 2018 05:06:57 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/08/2017 04:19 PM, Dinh Nguyen wrote: > > > On 02/28/2017 09:52 AM, Florian Vaussard wrote: >> Hi, >> >> These patches add suport for ARM Performance Monitor Units on Arria5 and >> Cyclone5 SoCFPGA. This was tested on a Cyclone 5 SoC DK board. >> >> Side note: the same change can be probably applied to Arria10 as well, >> but we do not have the hardware here to test. >> >> Regards, >> Florian >> >> Florian Vaussard (2): >> ARM: dts: socfpga: Add labels for CPU nodes >> ARM: dts: socfpga: Add support for PMU >> >> arch/arm/boot/dts/socfpga.dtsi | 13 +++++++++++-- >> 1 file changed, 11 insertions(+), 2 deletions(-) >> > > Applied! I have to wonder how this was tested. I tried this on 4.14.y, but when I do "perf record -e cycles", I get no samples. Moreover, when I check the PMU interrupts, "grep pmu /proc/interrupts", it shows 0 interrupts from the ARM PMU all the time. Why am I not getting any PMU interrupts when using perf ? -- Best regards, Marek Vasut