projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 9f36eaed | 2 | * |
| 79150a49 JD |
3 | * wrapper/irqflags.h |
| 4 | * | |
| 5 | * wrapper around IRQ flags. | |
| 6 | * | |
| 7 | * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 79150a49 JD |
8 | */ |
| 9 | ||
| 9f36eaed MJ |
10 | #ifndef _LTTNG_WRAPPER_IRQFLAGS_H |
| 11 | #define _LTTNG_WRAPPER_IRQFLAGS_H | |
| 12 | ||
| 79150a49 JD |
13 | #include <linux/version.h> |
| 14 | #include <linux/irqflags.h> | |
| 15 | ||
| 16 | #ifdef CONFIG_X86 | |
| 17 | ||
| 18 | static inline | |
| 19 | int lttng_regs_irqs_disabled(struct pt_regs *regs) | |
| 20 | { | |
| 21 | unsigned long flags = regs->flags; | |
| 22 | ||
| 2817cac0 | 23 | return raw_irqs_disabled_flags(flags); |
| 79150a49 JD |
24 | } |
| 25 | ||
| 26 | #else | |
| 27 | /* | |
| 28 | * lttng_regs_irqs_disabled() returns -1 if irqoff state is unknown. | |
| 29 | * TODO: should implement lttng_regs_irqs_disabled for each architecture | |
| 30 | * to add interruptible context for kprobes and kretprobes. | |
| 31 | */ | |
| 32 | ||
| 33 | static inline | |
| 34 | int lttng_regs_irqs_disabled(struct pt_regs *regs) | |
| 35 | { | |
| 36 | return -1; | |
| 37 | } | |
| 38 | #endif | |
| 39 | ||
| 40 | #endif /* _LTTNG_WRAPPER_IRQFLAGS_H */ |