[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kernel / tracepoint.c

// SPDX-License-Identifier: GPL-2.0
/*
 * 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
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
cf910e83 SA	2	/*
	3	* Code for supporting irq vector tracepoints.
	4	*
	5	* Copyright (C) 2013 Seiji Aguchi <seiji.aguchi@hds.com>
	6	*
	7	*/
2feb1b31 TG	8	#include <linux/jump_label.h>
	9	#include <linux/atomic.h>
	10
cf910e83 SA	11	#include <asm/hw_irq.h>
cf910e83 SA	12	#include <asm/desc.h>
cf910e83	13
80954747	14	DEFINE_STATIC_KEY_FALSE(trace_pagefault_key);
cf910e83	15
80954747	16	int trace_pagefault_reg(void)
cf910e83	17	{
80954747	18	static_branch_inc(&trace_pagefault_key);
8cf868af	19	return 0;
cf910e83 SA	20	}
cf910e83 SA	21
80954747	22	void trace_pagefault_unreg(void)
cf910e83	23	{
80954747	24	static_branch_dec(&trace_pagefault_key);
cf910e83	25	}
80954747 TG	26
	27	#ifdef CONFIG_SMP
	28
	29	DEFINE_STATIC_KEY_FALSE(trace_resched_ipi_key);
	30
	31	int trace_resched_ipi_reg(void)
	32	{
	33	static_branch_inc(&trace_resched_ipi_key);
	34	return 0;
	35	}
	36
	37	void trace_resched_ipi_unreg(void)
	38	{
	39	static_branch_dec(&trace_resched_ipi_key);
	40	}
	41
	42	#endif