Re: [PATCH 2/2] perf: Userspace software event and ioctl

From: Pawel Moll
Date: Fri Sep 26 2014 - 07:26:50 EST

On Fri, 2014-09-26 at 12:23 +0100, Ingo Molnar wrote:
> > As in: allows *all* tasks to inject the data? Are you sure we
> > don't want more fine-grained control, in particular per task?
> Yeah. If the profiler allows it, then any task that is being
> traced can inject data.

The "that is being traced" fragment was the key here. I missed the fact
that perf trace already takes a list of pids, so we're not talking about
all tasks in the system. That should work.


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