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Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to init event

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to init event
Date 2016-03-24 14:10 +0100
Message-ID <rgdbt-34K-31@gated-at.bofh.it> (permalink)
References (1 earlier) <rdkMa-1Kx-23@gated-at.bofh.it> <rfOPL-2sH-1@gated-at.bofh.it> <rgadB-EQ-15@gated-at.bofh.it> <rgb9E-1lm-11@gated-at.bofh.it> <rgcyK-2B9-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Mar 24, 2016 at 01:25:44PM +0100, Jiri Olsa wrote:
> > > > >   $ sudo perf record -e sched:sched_switch:u ls
> > > > >   $ sudo /perf script | wc -l
> > > > >   0

> > And its not like the [uk] flags are hard to implement here.
> 
> sched:sched_switch:u ?

As per the above, its implemented and correct. The answer is 0.

The only problem is that currently it assumes all tracepoint events are
from the kernel, and that is wrong for uprobes.

But returning an error is not right, its a valid configuration, a daft
one, sure, but not invalid.

Similarly uprobe:foo:k is daft, but broken.

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Thread

Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Peter Zijlstra <peterz@infradead.org> - 2016-03-23 12:10 +0100
  Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Jiri Olsa <jolsa@redhat.com> - 2016-03-24 11:00 +0100
    Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Peter Zijlstra <peterz@infradead.org> - 2016-03-24 12:00 +0100
      Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Jiri Olsa <jolsa@redhat.com> - 2016-03-24 13:30 +0100
        Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Peter Zijlstra <peterz@infradead.org> - 2016-03-24 14:10 +0100
          Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to  init event Jiri Olsa <jolsa@redhat.com> - 2016-03-24 14:40 +0100

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