Re: [PATCH 2/5] ftrace perf: Move exclude_kernel tracepoint check to init event
From: Jiri Olsa
Date: Thu Mar 24 2016 - 09:31:20 EST
On Thu, Mar 24, 2016 at 02:00:45PM +0100, Peter Zijlstra wrote:
> 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.
ok, will send fix for uprobes then