projects / lttng-modules.git / blame
| 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 | ||
| 2817cac0 | 36 | return raw_irqs_disabled_flags(flags); |
| 79150a49 JD |
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 */ |