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The synchronize_rcu_mult() function now detects duplicate requests for the same grace-period flavor and waits only once for each flavor. This commit therefore removes the ugly #ifdef from sched_cpu_deactivate() because synchronize_rcu_mult(call_rcu, call_rcu_sched) now does what the #ifdef used to be needed for. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de>