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authorPaul E. McKenney <paul.mckenney@linaro.org>2012-01-12 19:35:08 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2012-02-21 09:03:47 -0800
commit27565d64a4e564e72c22d8c91a3cfcb9442383e8 (patch)
tree699319f63f6c1cddc04ce85e77b3718361bbe03f /kernel/rcutree.c
parent5e1ee6e1016763812018bf5c5e966992821dc47e (diff)
downloadlinux-27565d64a4e564e72c22d8c91a3cfcb9442383e8.tar.bz2
rcu: Remove #ifdef CONFIG_SMP from TREE_RCU
Now that both TINY_RCU and TINY_PREEMPT_RCU have been in place for awhile, it is time to remove UP support from TREE_RCU, which is what this commit does. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutree.c')
-rw-r--r--kernel/rcutree.c19
1 files changed, 0 insertions, 19 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 195bf1fb59ea..61adb351d2c7 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -301,8 +301,6 @@ static struct rcu_node *rcu_get_root(struct rcu_state *rsp)
return &rsp->node[0];
}
-#ifdef CONFIG_SMP
-
/*
* If the specified CPU is offline, tell the caller that it is in
* a quiescent state. Otherwise, whack it with a reschedule IPI.
@@ -339,8 +337,6 @@ static int rcu_implicit_offline_qs(struct rcu_data *rdp)
return 0;
}
-#endif /* #ifdef CONFIG_SMP */
-
/*
* rcu_idle_enter_common - inform RCU that current CPU is moving towards idle
*
@@ -606,8 +602,6 @@ int rcu_is_cpu_rrupt_from_idle(void)
return __get_cpu_var(rcu_dynticks).dynticks_nesting <= 1;
}
-#ifdef CONFIG_SMP
-
/*
* Snapshot the specified CPU's dynticks counter so that we can later
* credit them with an implicit quiescent state. Return 1 if this CPU
@@ -651,8 +645,6 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp)
return rcu_implicit_offline_qs(rdp);
}
-#endif /* #ifdef CONFIG_SMP */
-
static void record_gp_stall_check_time(struct rcu_state *rsp)
{
rsp->gp_start = jiffies;
@@ -1517,8 +1509,6 @@ void rcu_check_callbacks(int cpu, int user)
trace_rcu_utilization("End scheduler-tick");
}
-#ifdef CONFIG_SMP
-
/*
* Scan the leaf rcu_node structures, processing dyntick state for any that
* have not yet encountered a quiescent state, using the function specified.
@@ -1641,15 +1631,6 @@ unlock_fqs_ret:
trace_rcu_utilization("End fqs");
}
-#else /* #ifdef CONFIG_SMP */
-
-static void force_quiescent_state(struct rcu_state *rsp, int relaxed)
-{
- set_need_resched();
-}
-
-#endif /* #else #ifdef CONFIG_SMP */
-
/*
* This does the RCU core processing work for the specified rcu_state
* and rcu_data structures. This may be called only from the CPU to