projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 4a6ea683 MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 2 | * | |
| 3 | * wrapper/cpu.h | |
| 4 | * | |
| 5 | * Copyright (C) 2021 Michael Jeanson <mjeanson@efficios.com> | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _LTTNG_WRAPPER_CPU_H | |
| 9 | #define _LTTNG_WRAPPER_CPU_H | |
| 10 | ||
| 11 | #include <linux/cpu.h> | |
| 12 | #include <lttng-kernel-version.h> | |
| 13 | ||
| 14 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,13,0)) | |
| 15 | ||
| 16 | static inline | |
| 17 | void lttng_cpus_read_lock(void) | |
| 18 | { | |
| 19 | cpus_read_lock(); | |
| 20 | } | |
| 21 | ||
| 22 | static inline | |
| 23 | void lttng_cpus_read_unlock(void) | |
| 24 | { | |
| 25 | cpus_read_unlock(); | |
| 26 | } | |
| 27 | ||
| 28 | #else /* LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,13,0) */ | |
| 29 | ||
| 30 | static inline | |
| 31 | void lttng_cpus_read_lock(void) | |
| 32 | { | |
| 33 | get_online_cpus(); | |
| 34 | } | |
| 35 | ||
| 36 | static inline | |
| 37 | void lttng_cpus_read_unlock(void) | |
| 38 | { | |
| 39 | put_online_cpus(); | |
| 40 | } | |
| 41 | ||
| 42 | #endif /* LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,13,0) */ | |
| 43 | ||
| 44 | #endif /* _LTTNG_WRAPPER_CPU_H */ |