[deliverable/lttng-modules.git] / wrapper / irqflags.h

#ifndef _LTTNG_WRAPPER_IRQFLAGS_H
#define _LTTNG_WRAPPER_IRQFLAGS_H

/*
 * wrapper/irqflags.h
 *
 * wrapper around IRQ flags.
 *
 * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; only
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <linux/version.h>
#include <linux/irqflags.h>

#ifdef CONFIG_X86

static inline
int lttng_regs_irqs_disabled(struct pt_regs *regs)
{
	unsigned long flags = regs->flags;

	return arch_irqs_disabled_flags(flags);
}

#else
/*
 * lttng_regs_irqs_disabled() returns -1 if irqoff state is unknown.
 * TODO: should implement lttng_regs_irqs_disabled for each architecture
 * to add interruptible context for kprobes and kretprobes.
 */

static inline
int lttng_regs_irqs_disabled(struct pt_regs *regs)
{
	return -1;
}
#endif

#endif /* _LTTNG_WRAPPER_IRQFLAGS_H */
Commit	Line	Data
79150a49 JD	1	#ifndef _LTTNG_WRAPPER_IRQFLAGS_H
	2	#define _LTTNG_WRAPPER_IRQFLAGS_H
	3
	4	/*
	5	* wrapper/irqflags.h
	6	*
	7	* wrapper around IRQ flags.
	8	*
	9	* Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* This library is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU Lesser General Public
	13	* License as published by the Free Software Foundation; only
	14	* version 2.1 of the License.
	15	*
	16	* This library is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* Lesser General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU Lesser General Public
	22	* License along with this library; if not, write to the Free Software
	23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	24	*/
	25
	26	#include <linux/version.h>
	27	#include <linux/irqflags.h>
	28
	29	#ifdef CONFIG_X86
	30
	31	static inline
	32	int lttng_regs_irqs_disabled(struct pt_regs *regs)
	33	{
	34	unsigned long flags = regs->flags;
	35
	36	return arch_irqs_disabled_flags(flags);
	37	}
	38
	39	#else
	40	/*
	41	* lttng_regs_irqs_disabled() returns -1 if irqoff state is unknown.
	42	* TODO: should implement lttng_regs_irqs_disabled for each architecture
	43	* to add interruptible context for kprobes and kretprobes.
	44	*/
	45
	46	static inline
	47	int lttng_regs_irqs_disabled(struct pt_regs *regs)
	48	{
	49	return -1;
	50	}
	51	#endif
	52
	53	#endif /* _LTTNG_WRAPPER_IRQFLAGS_H */