Hi, I issued the following commands: sudo perf record sleep 1 sudo perf report
Here is a snippet from the output of perf report: # Samples: 8 of event 'cycles' # Event count (approx.): 1609581 # # Overhead Command Shared Object Symbol # ........ ....... ................. ...... # 100.00% sleep [kernel.kallsyms] [k] 0xffffffff81043fea I also tried to record other commands such as dd, ping, the symbol showed in the output is always "[k] 0xffffffff81043fea", and this was the only kernel symbol. I checked /proc/kallsyms, this symbol did not exist in the file. I built my kernel from linux source tree with the default config. I tried on both 3.9.0 and 3.9.1. I built perf from linux-source-tree/tools/perf with a simple "make". Could someone suggest where did I go wrong? Thanks a bunch. -- Regards, Chao Xu -- 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
