projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 7502f47a FD |
2 | * |
| 3 | * wrapper/mm.h | |
| 4 | * | |
| 5 | * Copyright (C) 2018 Francis Deslauriers <francis.deslauriers@efficios.com> | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _LTTNG_WRAPPER_MM_H | |
| 9 | #define _LTTNG_WRAPPER_MM_H | |
| 10 | ||
| 11 | #include <linux/mm.h> | |
| 12 | #include <linux/oom.h> | |
| 13 | ||
| 2df37e95 | 14 | #include <lttng/kernel-version.h> |
| 7502f47a | 15 | |
| 5f4c791e | 16 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0) \ |
| 7502f47a FD |
17 | || LTTNG_UBUNTU_KERNEL_RANGE(4,4,25,44, 4,5,0,0)) |
| 18 | ||
| 19 | /* | |
| 20 | * Returns true if the current estimation of the number of page available is | |
| 21 | * larger than the number of pages passed as parameter. | |
| 22 | */ | |
| 23 | static inline | |
| 24 | bool wrapper_check_enough_free_pages(unsigned long num_pages) | |
| 25 | { | |
| 26 | return num_pages < si_mem_available(); | |
| 27 | } | |
| 28 | ||
| 29 | #else | |
| 30 | ||
| 31 | static inline | |
| 32 | bool wrapper_check_enough_free_pages(unsigned long num_pages) | |
| 33 | { | |
| 34 | /* | |
| 35 | * The si_mem_available function is not available on this kernel. Since | |
| 36 | * we can't reliably know if there is enough memory available, so we | |
| 37 | * return true. | |
| 38 | */ | |
| 39 | return true; | |
| 40 | } | |
| 41 | #endif | |
| 42 | ||
| 7502f47a | 43 | #endif /* _LTTNG_WRAPPER_MM_H */ |