[PATCH] x86: Remove register_nosave_region_late()
From: Amadeusz Sławiński
Date: Wed Jan 19 2022 - 05:48:16 EST
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@xxxxxxxxxxxxxxx>
Reviewed-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
include/linux/suspend.h | 11 +----------
kernel/power/snapshot.c | 21 +++++++--------------
2 files changed, 8 insertions(+), 24 deletions(-)
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 5785d909c321..3e8ecdebe601 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -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) {}
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index f7a986078213..330d49937692 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -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));
- }
+ /* 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(®ion->list, &nosave_regions);
--
2.25.1