Messages in this thread | | | Date | Wed, 29 Jul 2020 12:30:22 -0700 | From | Kees Cook <> | Subject | Re: [RFC][PATCH] locking/refcount: Provide __refcount API to obtain the old value |
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On Wed, Jul 29, 2020 at 01:11:20PM +0200, peterz@infradead.org wrote: > Subject: locking/refcount: Provide __refcount API to obtain the old value > From: Peter Zijlstra <peterz@infradead.org> > Date: Wed Jul 29 13:00:57 CEST 2020 > > David requested means to obtain the old/previous value from the > refcount API for tracing purposes. > > Duplicate (most of) the API as __refcount*() with an additional > 'int *' argument into which, if !NULL, the old value will be stored. > > Requested-by: David Howells <dhowells@redhat.com> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This looks good to me. Thanks for poking at it!
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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