Introduce ptr_eq() to compare two addresses while preserving the address dependencies for later use of the address. It should be used when comparing an address returned by rcu_dereference().
Thanks, Mathieu Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Sebastian Andrzej Siewior <bige...@linutronix.de> Cc: "Paul E. McKenney" <paul...@kernel.org> Cc: Will Deacon <w...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Boqun Feng <boqun.f...@gmail.com> Cc: Alan Stern <st...@rowland.harvard.edu> Cc: John Stultz <jstu...@google.com> Cc: Neeraj Upadhyay <neeraj.upadh...@amd.com> Cc: Boqun Feng <boqun.f...@gmail.com> Cc: Frederic Weisbecker <frede...@kernel.org> Cc: Joel Fernandes <j...@joelfernandes.org> Cc: Josh Triplett <j...@joshtriplett.org> Cc: Uladzislau Rezki <ure...@gmail.com> Cc: Steven Rostedt <rost...@goodmis.org> Cc: Lai Jiangshan <jiangshan...@gmail.com> Cc: Zqiang <qiang.zhang1...@gmail.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Waiman Long <long...@redhat.com> Cc: Mark Rutland <mark.rutl...@arm.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Vlastimil Babka <vba...@suse.cz> Cc: maged.mich...@gmail.com Cc: Mateusz Guzik <mjgu...@gmail.com> Cc: Gary Guo <g...@garyguo.net> Cc: Jonas Oberhauser <jonas.oberhau...@huaweicloud.com> Cc: r...@vger.kernel.org Cc: linux...@kvack.org Cc: l...@lists.linux.dev Mathieu Desnoyers (2): compiler.h: Introduce ptr_eq() to preserve address dependency Documentation: RCU: Refer to ptr_eq() Documentation/RCU/rcu_dereference.rst | 34 ++++++++++++--- include/linux/compiler.h | 62 +++++++++++++++++++++++++++ 2 files changed, 91 insertions(+), 5 deletions(-) -- 2.39.2
