Hey all, on ArchLinux with Linux 4.1.3, perf 4.1.0, I get:
$ perf trace Error: No permissions to read /sys/kernel/debug/tracing/events/raw_syscalls/sys_(enter|exit) Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug' $ sudo mount -o remount,mode=755 /sys/kernel/debug $ perf trace Error: No permissions to read /sys/kernel/debug/tracing/events/raw_syscalls/sys_(enter|exit) Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug' This is b/c Arch uses tracefs, and running $ sudo mount -o remount,mode=755 /sys/kernel/debug/tracefs fixes the issue for me. Could someone please amend the error message? Do I also need to remount debugfs, or is tracefs sufficient for using more advanced perf tools? Thanks -- Milian Wolff m...@milianw.de http://milianw.de -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
