Messages in this thread | | | From | Namhyung Kim <> | Subject | Re: [RFC 00/14] perf tools: Introduce new 'ftrace' command | Date | Thu, 25 Apr 2013 14:45:59 +0900 |
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Hi Jovi,
On Wed, 24 Apr 2013 19:14:49 +0800, zhangwei wrote: > On 2013/4/24 17:27, Namhyung Kim wrote: >>> Also, have you given thought on how to execute both ftrace and the pmu >>> counters? That is, to get a way to interleave the data? >> >> I didn't think about it yet. I just thought enabling event tracing in >> ftrace and get the data along with the function tracing. I'm not sure >> how they interfere each other when enabled at the same time. >> >> If that's not a valid concern, I think it's doable. > > There have ftrace:function event in tracing infrastructure, that event works in perf, > but I'm not sure if it could enhance to showing function graph as this patchset did. > perf record -e ftrace:function ls > /dev/null > perf report
Yes, I know that.
When I asked to Steve that how I can use ftrace:funcgraph_{entry,exit} as tracepoint events in perf tools, he said it'd be a non-trivial job and need some amount of scary work. :)
Thanks, Namhyung
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