| | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| | 2 | #ifndef LINUX_KEXEC_INTERNAL_H |
| | 3 | #define LINUX_KEXEC_INTERNAL_H |
| | 4 | |
| | 5 | #include <linux/kexec.h> |
| | 6 | |
| | 7 | struct kexec_segment; |
| | 8 | |
| | 9 | struct kimage *do_kimage_alloc_init(void); |
| | 10 | int sanity_check_segment_list(struct kimage *image); |
| | 11 | void kimage_free_page_list(struct list_head *list); |
| | 12 | void kimage_free(struct kimage *image); |
| | 13 | int kimage_load_segment(struct kimage *image, struct kexec_segment *segment); |
| | 14 | void kimage_terminate(struct kimage *image); |
| | 15 | int kimage_is_destination_range(struct kimage *image, |
| | 16 | unsigned long start, unsigned long end); |
| | 17 | |
| | 18 | /* |
| | 19 | * Whatever is used to serialize accesses to the kexec_crash_image needs to be |
| | 20 | * NMI safe, as __crash_kexec() can happen during nmi_panic(), so here we use a |
| | 21 | * "simple" atomic variable that is acquired with a cmpxchg(). |
| | 22 | */ |
| | 23 | extern atomic_t __kexec_lock; |
| | 24 | static inline bool kexec_trylock(void) |
| | 25 | { |
| | 26 | int old = 0; |
| | 27 | return atomic_try_cmpxchg_acquire(&__kexec_lock, &old, 1); |
| | 28 | } |
| | 29 | static inline void kexec_unlock(void) |
| | 30 | { |
| | 31 | atomic_set_release(&__kexec_lock, 0); |
| | 32 | } |
| | 33 | |
| | 34 | #ifdef CONFIG_KEXEC_FILE |
| | 35 | #include <linux/purgatory.h> |
| | 36 | void kimage_file_post_load_cleanup(struct kimage *image); |
| | 37 | extern char kexec_purgatory[]; |
| | 38 | extern size_t kexec_purgatory_size; |
| | 39 | #else /* CONFIG_KEXEC_FILE */ |
| | 40 | static inline void kimage_file_post_load_cleanup(struct kimage *image) { } |
| | 41 | #endif /* CONFIG_KEXEC_FILE */ |
| | 42 | |
| | 43 | struct kexec_buf; |
| | 44 | |
| | 45 | #ifdef CONFIG_KEXEC_HANDOVER |
| | 46 | int kho_locate_mem_hole(struct kexec_buf *kbuf, |
| | 47 | int (*func)(struct resource *, void *)); |
| | 48 | int kho_fill_kimage(struct kimage *image); |
| | 49 | #else |
| | 50 | static inline int kho_locate_mem_hole(struct kexec_buf *kbuf, |
| | 51 | int (*func)(struct resource *, void *)) |
| | 52 | { |
| | 53 | return 1; |
| | 54 | } |
| | 55 | |
| | 56 | static inline int kho_fill_kimage(struct kimage *image) { return 0; } |
| | 57 | #endif /* CONFIG_KEXEC_HANDOVER */ |
| | 58 | #endif /* LINUX_KEXEC_INTERNAL_H */ |
projects / linux-2.6-block.git / blame_incremental