rcu: Consolidate rcutiny_plugin.h ifdefs

This commit rearranges code in order to allow ifdefs to be consolidated
in kernel/rcutiny_plugin.h, simplifying the code.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
index bac3a6ecb99106a366a81e95fc7df80a028bd0f8..65ef1800f4fd8c3834c8ac57469d282899f899ec 100644 (file)
--- a/kernel/rcutiny_plugin.h
+++ b/kernel/rcutiny_plugin.h
@@ -53,54 +53,10 @@ static struct rcu_ctrlblk rcu_bh_ctrlblk = {
 };
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
+#include <linux/kernel_stat.h>
+
 int rcu_scheduler_active __read_mostly;
 EXPORT_SYMBOL_GPL(rcu_scheduler_active);
-#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
-
-#ifdef CONFIG_RCU_TRACE
-
-static void check_cpu_stall(struct rcu_ctrlblk *rcp)
-{
-       unsigned long j;
-       unsigned long js;
-
-       if (rcu_cpu_stall_suppress)
-               return;
-       rcp->ticks_this_gp++;
-       j = jiffies;
-       js = rcp->jiffies_stall;
-       if (*rcp->curtail && ULONG_CMP_GE(j, js)) {
-               pr_err("INFO: %s stall on CPU (%lu ticks this GP) idle=%llx (t=%lu jiffies q=%ld)\n",
-                      rcp->name, rcp->ticks_this_gp, rcu_dynticks_nesting,
-                      jiffies - rcp->gp_start, rcp->qlen);
-               dump_stack();
-       }
-       if (*rcp->curtail && ULONG_CMP_GE(j, js))
-               rcp->jiffies_stall = jiffies +
-                       3 * rcu_jiffies_till_stall_check() + 3;
-       else if (ULONG_CMP_GE(j, js))
-               rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
-}
-
-#endif /* #ifdef CONFIG_RCU_TRACE */
-
-static void reset_cpu_stall_ticks(struct rcu_ctrlblk *rcp)
-{
-#ifdef CONFIG_RCU_TRACE
-       rcp->ticks_this_gp = 0;
-       rcp->gp_start = jiffies;
-       rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
-#endif /* #ifdef CONFIG_RCU_TRACE */
-}
-
-static void check_cpu_stalls(void)
-{
-       RCU_TRACE(check_cpu_stall(&rcu_bh_ctrlblk));
-       RCU_TRACE(check_cpu_stall(&rcu_sched_ctrlblk));
-}
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-#include <linux/kernel_stat.h>
 
 /*
  * During boot, we forgive RCU lockdep issues.  After this function is
@@ -179,4 +135,42 @@ MODULE_AUTHOR("Paul E. McKenney");
 MODULE_DESCRIPTION("Read-Copy Update tracing for tiny implementation");
 MODULE_LICENSE("GPL");
 
+static void check_cpu_stall(struct rcu_ctrlblk *rcp)
+{
+       unsigned long j;
+       unsigned long js;
+
+       if (rcu_cpu_stall_suppress)
+               return;
+       rcp->ticks_this_gp++;
+       j = jiffies;
+       js = rcp->jiffies_stall;
+       if (*rcp->curtail && ULONG_CMP_GE(j, js)) {
+               pr_err("INFO: %s stall on CPU (%lu ticks this GP) idle=%llx (t=%lu jiffies q=%ld)\n",
+                      rcp->name, rcp->ticks_this_gp, rcu_dynticks_nesting,
+                      jiffies - rcp->gp_start, rcp->qlen);
+               dump_stack();
+       }
+       if (*rcp->curtail && ULONG_CMP_GE(j, js))
+               rcp->jiffies_stall = jiffies +
+                       3 * rcu_jiffies_till_stall_check() + 3;
+       else if (ULONG_CMP_GE(j, js))
+               rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
+}
+
 #endif /* #ifdef CONFIG_RCU_TRACE */
+
+static void reset_cpu_stall_ticks(struct rcu_ctrlblk *rcp)
+{
+#ifdef CONFIG_RCU_TRACE
+       rcp->ticks_this_gp = 0;
+       rcp->gp_start = jiffies;
+       rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
+#endif /* #ifdef CONFIG_RCU_TRACE */
+}
+
+static void check_cpu_stalls(void)
+{
+       RCU_TRACE(check_cpu_stall(&rcu_bh_ctrlblk));
+       RCU_TRACE(check_cpu_stall(&rcu_sched_ctrlblk));
+}