Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[firefly-linux-kernel-4.4.55.git] / kernel / profile.c

diff --git a/kernel/profile.c b/kernel/profile.c
index 1f391819c42fe6d6539f5ba5e66e6f365b877f6d..dc3384ee874e4ed5a0344395757744adc268c9bc 100644 (file)
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -37,9 +37,6 @@ struct profile_hit {
 #define NR_PROFILE_HIT         (PAGE_SIZE/sizeof(struct profile_hit))
 #define NR_PROFILE_GRP         (NR_PROFILE_HIT/PROFILE_GRPSZ)
 
-/* Oprofile timer tick hook */
-static int (*timer_hook)(struct pt_regs *) __read_mostly;
-
 static atomic_t *prof_buffer;
 static unsigned long prof_len, prof_shift;
 
@@ -208,25 +205,6 @@ int profile_event_unregister(enum profile_type type, struct notifier_block *n)
 }
 EXPORT_SYMBOL_GPL(profile_event_unregister);
 
-int register_timer_hook(int (*hook)(struct pt_regs *))
-{
-       if (timer_hook)
-               return -EBUSY;
-       timer_hook = hook;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(register_timer_hook);
-
-void unregister_timer_hook(int (*hook)(struct pt_regs *))
-{
-       WARN_ON(hook != timer_hook);
-       timer_hook = NULL;
-       /* make sure all CPUs see the NULL hook */
-       synchronize_sched();  /* Allow ongoing interrupts to complete. */
-}
-EXPORT_SYMBOL_GPL(unregister_timer_hook);
-
-
 #ifdef CONFIG_SMP
 /*
  * Each cpu has a pair of open-addressed hashtables for pending
@@ -436,8 +414,6 @@ void profile_tick(int type)
 {
        struct pt_regs *regs = get_irq_regs();
 
-       if (type == CPU_PROFILING && timer_hook)
-               timer_hook(regs);
        if (!user_mode(regs) && prof_cpu_mask != NULL &&
            cpumask_test_cpu(smp_processor_id(), prof_cpu_mask))
                profile_hit(type, (void *)profile_pc(regs));