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Date: Sat, 29 Aug 2015 10:36:33 +0800 From: "Wangnan (F)" <wangnan0@...wei.com> To: Alexei Starovoitov <ast@...mgrid.com>, <acme@...hat.com> CC: <brendan.d.gregg@...il.com>, <daniel@...earbox.net>, <dsahern@...il.com>, <hekuang@...wei.com>, <jolsa@...nel.org>, <xiakaixu@...wei.com>, <masami.hiramatsu.pt@...achi.com>, <namhyung@...nel.org>, <a.p.zijlstra@...llo.nl>, <lizefan@...wei.com>, <pi3orama@....com>, <linux-kernel@...r.kernel.org>, Arnaldo Carvalho de Melo <acme@...nel.org>, Ingo Molnar <mingo@...hat.com>, Steven Rostedt <rostedt@...dmis.org> Subject: Re: [PATCH 32/32] bpf: Introduce function for outputing data to perf event On 2015/8/29 10:22, Alexei Starovoitov wrote: > On 8/28/15 7:15 PM, Wangnan (F) wrote: >> I'd like to see whether it is possible to create dynamic tracepoints so >> different receivers can listen on different tracepoints. > > see my proposal A. I think ftrace instances might work for this. > > I'm not sure about 'format' part though. Kernel side shouldn't be > aware of it. It's only the contract between bpf program and user process > that deals with it. > It is an option. Let's keep an open mind now :) For current patch 32/32, I think it is useful enough for some simple cases, and we have already start using it internally. What about keep it as what it is now and create a independent method for your usecase? Thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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