Dear David, Thank you for this suggestion, and sorry for late reply. I have tried this yet, since I am using lock_stat to analyze the system lock info, and I will let you know if I have any updates on this. Thanks! Best Junjie
On Wednesday, February 26, 2014 9:29 PM, David Ahern <dsah...@gmail.com> wrote: On 2/26/14, 8:17 PM, Junjie Qian wrote: > Hi all, > > This is a follow up question about "perf lock". > I recompile the kernel, with both CONFIG_LOCKDEP and CONFIG_LOCK_STAT are > "y". But when I run the command "perf lock record -- sleep 10", the error > information still shows as: > tracepoint lock:lock_acquire is not enabled. Are CONFIG_LOCKDEP and > CONFIG_LOCK_STAT enabled? > > Could you give me some suggestions on this? are you running as root? If you are running perf as a normal user is the events directory accessible -- /sys/kernel/debug/tracing? Does /sys/kernel/debug/tracing/events/lock exist? David -- 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 -- 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
