linux-imx

#include <linux/mutex.h>

#include <linux/export.h>

#include <linux/hardirq.h>

#include <linux/delay.h>

#include <linux/moduleparam.h>

#include <linux/kthread.h>

#include <linux/tick.h>

#include <linux/rcupdate_wait.h>

#include <linux/sched/isolation.h>

​

#define CREATE_TRACE_POINTS

​

#include "rcu.h"

​

#ifdef MODULE_PARAM_PREFIX

#undef MODULE_PARAM_PREFIX

#endif

#define MODULE_PARAM_PREFIX "rcupdate."

​

    STATIC_LOCKDEP_MAP_INIT("rcu_callback", &rcu_callback_key);

EXPORT_SYMBOL_GPL(rcu_callback_map);

​

int notrace debug_lockdep_rcu_enabled(void)

{

    return rcu_scheduler_active != RCU_SCHEDULER_INACTIVE && debug_locks &&

           current->lockdep_recursion == 0;

}

EXPORT_SYMBOL_GPL(debug_lockdep_rcu_enabled);

​

/**

 * rcu_read_lock_held() - might we be in RCU read-side critical section?

 *

 * If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an RCU

 * read-side critical section.  In absence of CONFIG_DEBUG_LOCK_ALLOC,

 * this assumes we are in an RCU read-side critical section unless it can

 * prove otherwise.  This is useful for debug checks in functions that

 * require that they be called within an RCU read-side critical section.

 *