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From: Ingo M. <mi...@el...> - 2009-09-30 16:13:22
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* Masami Hiramatsu <mhi...@re...> wrote: > Masami Hiramatsu wrote: >> >> Hi, >> >> These patches introduce perf kprobe command and update kprobe-tracer. >> perf kprobe command allows you to add new probe points by C line number >> and local variable names. > > Last week, Arnaldo and I talked about this command, and he suggested > that the command would be better 'perf probe', because it would be > able to cover both of kernel space (by kprobes) and user space (by > uprobes). Agreed. > Basically, I agree with his idea. But I think we may need to consider > more flexible syntax for that purpose before we support uprobes. In > this area, SystemTap has done big advance, we can see how many > varieties of syntax it has by 'man stapprobes'. > > And also, it's hard to decide it without real uprobe-tracer (and > uprobes too!) implementation on ftrace. So, I think it is better to > continue using 'perf kprobe' in this time. > > But it's worth to add to todo list. :) I'd still name it 'perf probe', even if initially it supports kprobes. Ingo |