Package: libopencsd0 Severity: normal Dear Maintainer,
Starting with the 5.1 Linux kernel cycle it is mandatory to add the command line option "CORESIGHT=1" to enable CoreSight support when compiling the perf tools. Before kernel 5.1: $ make -C tools/perf For kernel 5.1 and after: $ make -C tools/perf CORESIGHT=1 Nothing else has changed. Many thanks for looking into this. Mathieu -- System Information: Debian Release: buster/sid APT prefers bionic-updates APT policy: (500, 'bionic-updates'), (500, 'bionic-security'), (500, 'bionic'), (100, 'bionic-backports') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.15.0-45-generic (SMP w/8 CPU cores) Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8), LANGUAGE=en_CA:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled