rcu: Remove unused code originally used for context tracking

As context tracking subsystem evolved, it stopped using ignore_user_qs
and in_user defined in the rcu_dynticks structure.  This commit therefore
removes them.

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index d78ba606acf1def159ae637047aa92f7589eb2bf..8a13c8ef9642c4f0f39459db3e0e70b62a3e6d98 100644 (file)
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -2719,9 +2719,6 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
        rdp->dynticks = &per_cpu(rcu_dynticks, cpu);
        WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE);
        WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1);
-#ifdef CONFIG_RCU_USER_QS
-       WARN_ON_ONCE(rdp->dynticks->in_user);
-#endif
        rdp->cpu = cpu;
        rdp->rsp = rsp;
        rcu_boot_init_nocb_percpu_data(rdp);

diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index 4b69291b093d7157d638da01d342c2ee3d1f2d16..6f21f2eccb16c2793cd56d0a1b18f58b2a736055 100644 (file)
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -102,10 +102,6 @@ struct rcu_dynticks {
                                    /* idle-period nonlazy_posted snapshot. */
        int tick_nohz_enabled_snap; /* Previously seen value from sysfs. */
 #endif /* #ifdef CONFIG_RCU_FAST_NO_HZ */
-#ifdef CONFIG_RCU_USER_QS
-       bool ignore_user_qs;        /* Treat userspace as extended QS or not */
-       bool in_user;               /* Is the CPU in userland from RCU POV? */
-#endif
 };
 
 /* RCU's kthread states for tracing. */