Re: [PATCH v2 11/11] lockdep,trace: Expose tracepoints

[peterz]

On Thu, Sep 03, 2020 at 04:00:47PM +0200, peterz@xxxxxxxxxxxxx wrote:
> I stuck a tracepoint in intel_idle and had a rummage around. The below
> seems to work for me now.

Note that this will insta-kill all trace_*_rcuidle() tracepoint that are
actually used in rcuidle.

A git-grep seems to suggest the remaining users are:

 - arch/arm
 - arch/arm64 -- IPI tracepoint that are ordered incorrectly in
                 their entry code,

 - runtime pm
 - common clk -- these both need re-ordering somehow

 - trace_preemptirq -- this is going to be interesting for
                       those archs that idle with IRQs enabled

 - printk -- we shouldn't be printk()-ing from idle, and if we are,
             missing this is the least of our problems.