Re: [PATCH v2] tracing/perf: Move rcu_irq_enter/exit_irqson() to perf trace point hook

[Peter Zijlstra]

On Tue, Feb 11, 2020 at 06:29:52PM +0100, Peter Zijlstra wrote:
> +#define trace_rcu_enter()					\
> +({								\
> +	unsigned long state = 0;				\
> +	if (!rcu_is_watching())	{				\

Also, afaict rcu_is_watching() itself needs more love, the functio has
notrace, but calls other stuff that does not have notrace or inline.