kprobes: support kretprobe and jprobe per-probe disabling

[safe/jmp/linux-2.6] / include / linux / rcuclassic.h

diff --git a/include/linux/rcuclassic.h b/include/linux/rcuclassic.h
index 5f89b62..bfd92e1 100644 (file)
--- a/include/linux/rcuclassic.h
+++ b/include/linux/rcuclassic.h
@@ -36,12 +36,11 @@
 #include <linux/cache.h>
 #include <linux/spinlock.h>
 #include <linux/threads.h>
-#include <linux/percpu.h>
 #include <linux/cpumask.h>
 #include <linux/seqlock.h>
 
 #ifdef CONFIG_RCU_CPU_STALL_DETECTOR
-#define RCU_SECONDS_TILL_STALL_CHECK   ( 3 * HZ) /* for rcp->jiffies_stall */
+#define RCU_SECONDS_TILL_STALL_CHECK   (10 * HZ) /* for rcp->jiffies_stall */
 #define RCU_SECONDS_TILL_STALL_RECHECK (30 * HZ) /* for rcp->jiffies_stall */
 #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
 
@@ -59,8 +58,8 @@ struct rcu_ctrlblk {
        int     signaled;
 
        spinlock_t      lock    ____cacheline_internodealigned_in_smp;
-       cpumask_t       cpumask; /* CPUs that need to switch in order    */
-                                /* for current batch to proceed.        */
+       DECLARE_BITMAP(cpumask, NR_CPUS); /* CPUs that need to switch for */
+                                         /* current batch to proceed.     */
 } ____cacheline_internodealigned_in_smp;
 
 /* Is batch a before batch b ? */
@@ -108,25 +107,14 @@ struct rcu_data {
        struct rcu_head barrier;
 };
 
-DECLARE_PER_CPU(struct rcu_data, rcu_data);
-DECLARE_PER_CPU(struct rcu_data, rcu_bh_data);
-
 /*
  * Increment the quiescent state counter.
  * The counter is a bit degenerated: We do not need to know
  * how many quiescent states passed, just if there was at least
  * one since the start of the grace period. Thus just a flag.
  */
-static inline void rcu_qsctr_inc(int cpu)
-{
-       struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
-       rdp->passed_quiesc = 1;
-}
-static inline void rcu_bh_qsctr_inc(int cpu)
-{
-       struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu);
-       rdp->passed_quiesc = 1;
-}
+extern void rcu_qsctr_inc(int cpu);
+extern void rcu_bh_qsctr_inc(int cpu);
 
 extern int rcu_pending(int cpu);
 extern int rcu_needs_cpu(int cpu);
@@ -181,4 +169,10 @@ extern long rcu_batches_completed_bh(void);
 #define rcu_enter_nohz()       do { } while (0)
 #define rcu_exit_nohz()                do { } while (0)
 
+/* A context switch is a grace period for rcuclassic. */
+static inline int rcu_blocking_is_gp(void)
+{
+       return num_online_cpus() == 1;
+}
+
 #endif /* __LINUX_RCUCLASSIC_H */