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| author | Domenico Andreoli <domenico.andreoli@linux.com> | 2020-05-07 09:19:52 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-05-19 17:48:08 +0200 |
| commit | ab7e9b067f3d9cbec28cfca51d341efb421b7a51 (patch) | |
| tree | 945ac12fc98f52d44b7f44bff01837cd62b9eb3e /kernel/power/power.h | |
| parent | 3a4ccdb92e1e0f51844c8b60f2c0f48a4a620000 (diff) | |
| download | linux-ab7e9b067f3d9cbec28cfca51d341efb421b7a51.tar.gz linux-ab7e9b067f3d9cbec28cfca51d341efb421b7a51.tar.bz2 linux-ab7e9b067f3d9cbec28cfca51d341efb421b7a51.zip | |
PM: hibernate: Incorporate concurrency handling
Hibernation concurrency handling is currently delegated to user.c,
where it's also used for regulating the access to the snapshot device.
In the prospective of making user.c a separate configuration option,
such mutual exclusion is brought into hibernate.c and made available
through accessor helpers hereby introduced.
Signed-off-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 7cdc64dc2373..ba2094db6294 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -154,8 +154,8 @@ extern int snapshot_write_next(struct snapshot_handle *handle); extern void snapshot_write_finalize(struct snapshot_handle *handle); extern int snapshot_image_loaded(struct snapshot_handle *handle); -/* If unset, the snapshot device cannot be open. */ -extern atomic_t snapshot_device_available; +extern bool hibernate_acquire(void); +extern void hibernate_release(void); extern sector_t alloc_swapdev_block(int swap); extern void free_all_swap_pages(int swap); |