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Currently, there are rcu_data structure fields named ->rcu_onl_gp_seq and ->rcu_ofl_gp_seq that track the rcu_state.gp_flags field at the time of the corresponding CPU's last online or offline operation, respectively. However, this information is not particularly useful. It would be better to instead track the grace period state kept in rcu_state.gp_state. This would also be consistent with the initialization in rcu_boot_init_percpu_data(), which is to RCU_GP_CLEANED (an rcu_state.gp_state value), and also with the diagnostics in rcu_implicit_dynticks_qs(), whose format is consistent with an integer, not a bitmask. This commit therefore makes this change and changes the names to ->rcu_onl_gp_flags and ->rcu_ofl_gp_flags, respectively. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>