1 files changed, 0 insertions, 43 deletions

diff --git a/arch/x86/kernel/tracepoint.c b/arch/x86/kernel/tracepoint.c
index dd4aa04bb95c..4cae92f15495 100644
--- a/arch/x86/kernel/tracepoint.c
+++ b/arch/x86/kernel/tracepoint.c
@@ -10,58 +10,15 @@
 #include <asm/hw_irq.h>
 #include <asm/desc.h>
 
-atomic_t trace_idt_ctr = ATOMIC_INIT(0);
-struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
-				(unsigned long) trace_idt_table };
-
-/* No need to be aligned, but done to keep all IDTs defined the same way. */
-gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;
-
 DEFINE_STATIC_KEY_FALSE(trace_irqvectors_key);
-static int trace_irq_vector_refcount;
-static DEFINE_MUTEX(irq_vector_mutex);
-
-static void set_trace_idt_ctr(int val)
-{
-	atomic_set(&trace_idt_ctr, val);
-	/* Ensure the trace_idt_ctr is set before sending IPI */
-	wmb();
-}
-
-static void switch_idt(void *arg)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	load_current_idt();
-	local_irq_restore(flags);
-}
 
 int trace_irq_vector_regfunc(void)
 {
 	static_branch_inc(&trace_irqvectors_key);
-
-	mutex_lock(&irq_vector_mutex);
-	if (!trace_irq_vector_refcount) {
-		set_trace_idt_ctr(1);
-		smp_call_function(switch_idt, NULL, 0);
-		switch_idt(NULL);
-	}
-	trace_irq_vector_refcount++;
-	mutex_unlock(&irq_vector_mutex);
 	return 0;
 }
 
 void trace_irq_vector_unregfunc(void)
 {
 	static_branch_dec(&trace_irqvectors_key);
-
-	mutex_lock(&irq_vector_mutex);
-	trace_irq_vector_refcount--;
-	if (!trace_irq_vector_refcount) {
-		set_trace_idt_ctr(0);
-		smp_call_function(switch_idt, NULL, 0);
-		switch_idt(NULL);
-	}
-	mutex_unlock(&irq_vector_mutex);
 }