Re: [patch V4 part 1 24/36] lockdep: Prepare for noinstr sections

[Peter Zijlstra]

On Thu, May 07, 2020 at 08:23:39PM -0400, Steven Rostedt wrote:

> > +void lockdep_hardirqs_on_prepare(unsigned long ip)

> > +void noinstr lockdep_hardirqs_on(unsigned long ip)

> Would be nice to have some kerneldoc explaining the difference between
> lockdep_hardirqs_on_prepare() and lockdep_hardirqs_on().

As the naming suggests, it's not a matter of difference, but of order,
first you call on_prepare(), then you call on(). The function signature
as per the above gives clue why.