https://github.com/torvalds/linux
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Tip revision: bb176f67090ca54869fc1262c913aa69d2ede070 authored by Linus Torvalds on 23 October 2017, 10:49:47 UTC
Linux 4.14-rc6
Tip revision: bb176f6
tracepoint.c
/*
 * Code for supporting irq vector tracepoints.
 *
 * Copyright (C) 2013 Seiji Aguchi <seiji.aguchi@hds.com>
 *
 */
#include <linux/jump_label.h>
#include <linux/atomic.h>

#include <asm/hw_irq.h>
#include <asm/desc.h>

DEFINE_STATIC_KEY_FALSE(trace_pagefault_key);

int trace_pagefault_reg(void)
{
	static_branch_inc(&trace_pagefault_key);
	return 0;
}

void trace_pagefault_unreg(void)
{
	static_branch_dec(&trace_pagefault_key);
}

#ifdef CONFIG_SMP

DEFINE_STATIC_KEY_FALSE(trace_resched_ipi_key);

int trace_resched_ipi_reg(void)
{
	static_branch_inc(&trace_resched_ipi_key);
	return 0;
}

void trace_resched_ipi_unreg(void)
{
	static_branch_dec(&trace_resched_ipi_key);
}

#endif
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