On Wed, Feb 14, 2018 at 03:17:07PM -0600, Josh Poimboeuf wrote: > On Wed, Feb 14, 2018 at 12:40:34PM -0500, Steven Rostedt wrote: > > On Wed, 14 Feb 2018 11:34:07 -0600 > > Josh Poimboeuf <jpoim...@redhat.com> wrote: > > > > > > > And in patch 1 the warning conditions need to be tweaked a bit to > > > exclude the __init case. > > > > > > > Hmm, I wonder if we could simply remove the references from the jump > > label table when init is freed. > > Interesting idea. The static key's entries (i.e. tracepoint sites) are > in a static array. Maybe we could rewrite the affected arrays when init > memory is freed. I'm not sure whether that would be overkill though. I > can tinker with it and see how it compares to the current solution.
It turns out that something like this is already done for module init code. It doesn't *remove* the entry, but it does disable it by setting entry->code to zero. I'll just do the same thing right before initmem is freed. -- Josh
