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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
treeb406c5242a088c4f59c6e4b719b783f43aca6ae9 /kernel/power
parentAdding upstream version 6.7.12. (diff)
downloadlinux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz
linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/hibernate.c10
-rw-r--r--kernel/power/main.c16
-rw-r--r--kernel/power/power.h2
-rw-r--r--kernel/power/snapshot.c16
-rw-r--r--kernel/power/suspend.c6
-rw-r--r--kernel/power/swap.c3
6 files changed, 25 insertions, 28 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index dee341ae4a..4b0b7cf2e0 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -642,9 +642,9 @@ int hibernation_platform_enter(void)
*/
static void power_down(void)
{
-#ifdef CONFIG_SUSPEND
int error;
+#ifdef CONFIG_SUSPEND
if (hibernation_mode == HIBERNATION_SUSPEND) {
error = suspend_devices_and_enter(mem_sleep_current);
if (error) {
@@ -667,7 +667,13 @@ static void power_down(void)
kernel_restart(NULL);
break;
case HIBERNATION_PLATFORM:
- hibernation_platform_enter();
+ error = hibernation_platform_enter();
+ if (error == -EAGAIN || error == -EBUSY) {
+ swsusp_unmark();
+ events_check_enabled = false;
+ pr_info("Wakeup event detected during hibernation, rolling back.\n");
+ return;
+ }
fallthrough;
case HIBERNATION_SHUTDOWN:
if (kernel_can_power_off())
diff --git a/kernel/power/main.c b/kernel/power/main.c
index f6425ae3e8..b1ae9b677d 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -60,22 +60,6 @@ EXPORT_SYMBOL_GPL(lock_system_sleep);
void unlock_system_sleep(unsigned int flags)
{
- /*
- * Don't use freezer_count() because we don't want the call to
- * try_to_freeze() here.
- *
- * Reason:
- * Fundamentally, we just don't need it, because freezing condition
- * doesn't come into effect until we release the
- * system_transition_mutex lock, since the freezer always works with
- * system_transition_mutex held.
- *
- * More importantly, in the case of hibernation,
- * unlock_system_sleep() gets called in snapshot_read() and
- * snapshot_write() when the freezing condition is still in effect.
- * Which means, if we use try_to_freeze() here, it would make them
- * enter the refrigerator, thus causing hibernation to lockup.
- */
if (!(flags & PF_NOFREEZE))
current->flags &= ~PF_NOFREEZE;
mutex_unlock(&system_transition_mutex);
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 17fd9aaaf0..8499a39c62 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -175,6 +175,8 @@ extern int swsusp_write(unsigned int flags);
void swsusp_close(void);
#ifdef CONFIG_SUSPEND
extern int swsusp_unmark(void);
+#else
+static inline int swsusp_unmark(void) { return 0; }
#endif
struct __kernel_old_timeval;
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 50a15408c3..5c96ff067c 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1119,7 +1119,7 @@ static void mark_nosave_pages(struct memory_bitmap *bm)
int create_basic_memory_bitmaps(void)
{
struct memory_bitmap *bm1, *bm2;
- int error = 0;
+ int error;
if (forbidden_pages_map && free_pages_map)
return 0;
@@ -1487,11 +1487,11 @@ static bool copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
s_page = pfn_to_page(src_pfn);
d_page = pfn_to_page(dst_pfn);
if (PageHighMem(s_page)) {
- src = kmap_atomic(s_page);
- dst = kmap_atomic(d_page);
+ src = kmap_local_page(s_page);
+ dst = kmap_local_page(d_page);
zeros_only = do_copy_page(dst, src);
- kunmap_atomic(dst);
- kunmap_atomic(src);
+ kunmap_local(dst);
+ kunmap_local(src);
} else {
if (PageHighMem(d_page)) {
/*
@@ -1499,9 +1499,9 @@ static bool copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
* data modified by kmap_atomic()
*/
zeros_only = safe_copy_page(buffer, s_page);
- dst = kmap_atomic(d_page);
+ dst = kmap_local_page(d_page);
copy_page(dst, buffer);
- kunmap_atomic(dst);
+ kunmap_local(dst);
} else {
zeros_only = safe_copy_page(page_address(d_page), s_page);
}
@@ -2778,7 +2778,7 @@ static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca)
int snapshot_write_next(struct snapshot_handle *handle)
{
static struct chain_allocator ca;
- int error = 0;
+ int error;
next:
/* Check if we have already loaded the entire image */
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index a718067dee..3aae526cc4 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -106,6 +106,12 @@ static void s2idle_enter(void)
swait_event_exclusive(s2idle_wait_head,
s2idle_state == S2IDLE_STATE_WAKE);
+ /*
+ * Kick all CPUs to ensure that they resume their timers and restore
+ * consistent system state.
+ */
+ wake_up_all_idle_cpus();
+
cpus_read_unlock();
raw_spin_lock_irq(&s2idle_lock);
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index d44f5937f1..6053ddddaf 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -451,7 +451,7 @@ err_close:
static int swap_write_page(struct swap_map_handle *handle, void *buf,
struct hib_bio_batch *hb)
{
- int error = 0;
+ int error;
sector_t offset;
if (!handle->cur)
@@ -1566,7 +1566,6 @@ put:
/**
* swsusp_close - close resume device.
- * @exclusive: Close the resume device which is exclusively opened.
*/
void swsusp_close(void)