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
