On Thu, 20 Aug 2020 09:30:32 +0200
Peter Zijlstra <[email protected]> wrote:
> +++ b/include/linux/lockdep.h
> @@ -535,19 +535,27 @@ do {
> \
> DECLARE_PER_CPU(int, hardirqs_enabled);
> DECLARE_PER_CPU(int, hardirq_context);
>
> +/*
> + * The below lockdep_assert_*() macros se raw_cpu_read() to access the above
s/se/use/ ?
-- Steve
> + * per-cpu variables. This is required because this_cpu_read() will
> potentially
> + * call into preempt/irq-disable and that obviously isn't right. This is also
> + * correct because when IRQs are enabled, it doesn't matter if we
> accidentally
> + * read the value from our previous CPU.
> + */
