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PM: hibernate: Remove register_nosave_region_late()

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It is an unused wrapper forcing kmalloc allocation for registering
nosave regions. Also, rename __register_nosave_region() to
register_nosave_region() now that there is no need for disambiguation.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Amadeusz Sławiński 2022-01-19 11:47:51 +01:00 committed by Rafael J. Wysocki
parent c9d967b2ce
commit 33569ef3c7
2 changed files with 8 additions and 24 deletions
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11
include/linux/suspend.h
View File

@ -430,15 +430,7 @@ struct platform_hibernation_ops {
#ifdef CONFIG_HIBERNATION
/* kernel/power/snapshot.c */
extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
static inline void __init register_nosave_region(unsigned long b, unsigned long e)
{
__register_nosave_region(b, e, 0);
}
static inline void __init register_nosave_region_late(unsigned long b, unsigned long e)
{
__register_nosave_region(b, e, 1);
}
extern void register_nosave_region(unsigned long b, unsigned long e);
extern int swsusp_page_is_forbidden(struct page *);
extern void swsusp_set_page_free(struct page *);
extern void swsusp_unset_page_free(struct page *);
@ -458,7 +450,6 @@ int pfn_is_nosave(unsigned long pfn);
int hibernate_quiet_exec(int (*func)(void *data), void *data);
#else /* CONFIG_HIBERNATION */
static inline void register_nosave_region(unsigned long b, unsigned long e) {}
static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
static inline void swsusp_set_page_free(struct page *p) {}
static inline void swsusp_unset_page_free(struct page *p) {}

9
kernel/power/snapshot.c
View File

@ -978,8 +978,7 @@ static void memory_bm_recycle(struct memory_bitmap *bm)
* Register a range of page frames the contents of which should not be saved
* during hibernation (to be used in the early initialization code).
*/
void __init __register_nosave_region(unsigned long start_pfn,
unsigned long end_pfn, int use_kmalloc)
void __init register_nosave_region(unsigned long start_pfn, unsigned long end_pfn)
{
struct nosave_region *region;
@ -995,18 +994,12 @@ void __init __register_nosave_region(unsigned long start_pfn,
goto Report;
}
}
if (use_kmalloc) {
/* During init, this shouldn't fail */
region = kmalloc(sizeof(struct nosave_region), GFP_KERNEL);
BUG_ON(!region);
} else {
/* This allocation cannot fail */
region = memblock_alloc(sizeof(struct nosave_region),
SMP_CACHE_BYTES);
if (!region)
panic("%s: Failed to allocate %zu bytes\n", __func__,
sizeof(struct nosave_region));
}
region->start_pfn = start_pfn;
region->end_pfn = end_pfn;
list_add_tail(&region->list, &nosave_regions);