On 2015/10/28 18:55, Wang Nan wrote:
Alexei provided a patchset to allow BPF programs output data to ring buffer using helper bpf_perf_event_output() [1]. and have been merged into net-next as commit a43eec304259a6c637f4014a6d4767159b6a3aa3 (bpf: introduce bpf_perf_event_output() helper). This patchset introduces perf side code to utilize that helper, This patchset only supports output data to CTF. It is enough for me because my workflow is 'perf record' -> 'convert to CTF' -> 'python'. However, I know some people heavily rely on 'perf script' to parse trace in perf.data. Here I'd like discuss the way to show output data using 'perf script'. Currently the only way to watch the output data using perf script is to use '-D'. [1] http://lkml.kernel.org/r/1445396556-4854-1-git-send-email-...@kernel.org
This patchset is based on my perf ebpf support patches. Workable code can be found from github: https://github.com/WangNan0/linux/commits/ebpf It should be merged after net-next merged into mainline. I post them now for demostration and discussion. Thank you. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
