From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/include/linux/suspend.h | 147 ++++++++++++++++++++++++++++++------------------
1 files changed, 91 insertions(+), 56 deletions(-)
diff --git a/kernel/include/linux/suspend.h b/kernel/include/linux/suspend.h
index 5ee7e53..27321d5 100644
--- a/kernel/include/linux/suspend.h
+++ b/kernel/include/linux/suspend.h
@@ -8,6 +8,7 @@
#include <linux/pm.h>
#include <linux/mm.h>
#include <linux/freezer.h>
+#include <linux/android_kabi.h>
#include <asm/errno.h>
#ifdef CONFIG_VT
@@ -37,10 +38,8 @@
#define PM_SUSPEND_TO_IDLE ((__force suspend_state_t) 1)
#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 2)
#define PM_SUSPEND_MEM ((__force suspend_state_t) 3)
-#define PM_SUSPEND_MEM_LITE ((__force suspend_state_t) 4)
-#define PM_SUSPEND_MEM_ULTRA ((__force suspend_state_t) 5)
#define PM_SUSPEND_MIN PM_SUSPEND_TO_IDLE
-#define PM_SUSPEND_MAX ((__force suspend_state_t) 6)
+#define PM_SUSPEND_MAX ((__force suspend_state_t) 4)
enum suspend_stat_step {
SUSPEND_FREEZE = 1,
@@ -187,15 +186,20 @@
bool (*suspend_again)(void);
void (*end)(void);
void (*recover)(void);
+
+ ANDROID_KABI_RESERVE(1);
};
struct platform_s2idle_ops {
int (*begin)(void);
int (*prepare)(void);
- void (*wake)(void);
- void (*sync)(void);
+ int (*prepare_late)(void);
+ bool (*wake)(void);
+ void (*restore_early)(void);
void (*restore)(void);
void (*end)(void);
+
+ ANDROID_KABI_RESERVE(1);
};
#ifdef CONFIG_SUSPEND
@@ -211,8 +215,9 @@
extern unsigned int pm_suspend_global_flags;
-#define PM_SUSPEND_FLAG_FW_SUSPEND (1 << 0)
-#define PM_SUSPEND_FLAG_FW_RESUME (1 << 1)
+#define PM_SUSPEND_FLAG_FW_SUSPEND BIT(0)
+#define PM_SUSPEND_FLAG_FW_RESUME BIT(1)
+#define PM_SUSPEND_FLAG_NO_PLATFORM BIT(2)
static inline void pm_suspend_clear_flags(void)
{
@@ -229,14 +234,66 @@
pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_RESUME;
}
+static inline void pm_set_suspend_no_platform(void)
+{
+ pm_suspend_global_flags |= PM_SUSPEND_FLAG_NO_PLATFORM;
+}
+
+/**
+ * pm_suspend_via_firmware - Check if platform firmware will suspend the system.
+ *
+ * To be called during system-wide power management transitions to sleep states
+ * or during the subsequent system-wide transitions back to the working state.
+ *
+ * Return 'true' if the platform firmware is going to be invoked at the end of
+ * the system-wide power management transition (to a sleep state) in progress in
+ * order to complete it, or if the platform firmware has been invoked in order
+ * to complete the last (or preceding) transition of the system to a sleep
+ * state.
+ *
+ * This matters if the caller needs or wants to carry out some special actions
+ * depending on whether or not control will be passed to the platform firmware
+ * subsequently (for example, the device may need to be reset before letting the
+ * platform firmware manipulate it, which is not necessary when the platform
+ * firmware is not going to be invoked) or when such special actions may have
+ * been carried out during the preceding transition of the system to a sleep
+ * state (as they may need to be taken into account).
+ */
static inline bool pm_suspend_via_firmware(void)
{
return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_SUSPEND);
}
+/**
+ * pm_resume_via_firmware - Check if platform firmware has woken up the system.
+ *
+ * To be called during system-wide power management transitions from sleep
+ * states.
+ *
+ * Return 'true' if the platform firmware has passed control to the kernel at
+ * the beginning of the system-wide power management transition in progress, so
+ * the event that woke up the system from sleep has been handled by the platform
+ * firmware.
+ */
static inline bool pm_resume_via_firmware(void)
{
return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_RESUME);
+}
+
+/**
+ * pm_suspend_no_platform - Check if platform may change device power states.
+ *
+ * To be called during system-wide power management transitions to sleep states
+ * or during the subsequent system-wide transitions back to the working state.
+ *
+ * Return 'true' if the power states of devices remain under full control of the
+ * kernel throughout the system-wide suspend and resume cycle in progress (that
+ * is, if a device is put into a certain power state during suspend, it can be
+ * expected to remain in that state during resume).
+ */
+static inline bool pm_suspend_no_platform(void)
+{
+ return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_NO_PLATFORM);
}
/* Suspend-to-idle state machnine. */
@@ -253,7 +310,7 @@
return unlikely(s2idle_state == S2IDLE_STATE_ENTER);
}
-extern bool pm_suspend_via_s2idle(void);
+extern bool pm_suspend_default_s2idle(void);
extern void __init pm_states_init(void);
extern void s2idle_set_ops(const struct platform_s2idle_ops *ops);
extern void s2idle_wake(void);
@@ -277,6 +334,7 @@
extern void arch_suspend_enable_irqs(void);
extern int pm_suspend(suspend_state_t state);
+extern bool sync_on_suspend_enabled;
#else /* !CONFIG_SUSPEND */
#define suspend_valid_only_mem NULL
@@ -285,10 +343,12 @@
static inline void pm_set_resume_via_firmware(void) {}
static inline bool pm_suspend_via_firmware(void) { return false; }
static inline bool pm_resume_via_firmware(void) { return false; }
-static inline bool pm_suspend_via_s2idle(void) { return false; }
+static inline bool pm_suspend_no_platform(void) { return false; }
+static inline bool pm_suspend_default_s2idle(void) { return false; }
static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {}
static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; }
+static inline bool sync_on_suspend_enabled(void) { return true; }
static inline bool idle_should_enter_s2idle(void) { return false; }
static inline void __init pm_states_init(void) {}
static inline void s2idle_set_ops(const struct platform_s2idle_ops *ops) {}
@@ -361,7 +421,7 @@
* platforms which require special recovery actions in that situation.
*/
struct platform_hibernation_ops {
- int (*begin)(void);
+ int (*begin)(pm_message_t stage);
void (*end)(void);
int (*pre_snapshot)(void);
void (*finish)(void);
@@ -371,19 +431,13 @@
int (*pre_restore)(void);
void (*restore_cleanup)(void);
void (*recover)(void);
+
+ ANDROID_KABI_RESERVE(1);
};
#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 *);
@@ -397,9 +451,11 @@
extern bool hibernation_available(void);
asmlinkage int swsusp_save(void);
extern struct pbe *restore_pblist;
+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) {}
@@ -408,7 +464,17 @@
static inline int hibernate(void) { return -ENOSYS; }
static inline bool system_entering_hibernation(void) { return false; }
static inline bool hibernation_available(void) { return false; }
+
+static inline int hibernate_quiet_exec(int (*func)(void *data), void *data) {
+ return -ENOTSUPP;
+}
#endif /* CONFIG_HIBERNATION */
+
+#ifdef CONFIG_HIBERNATION_SNAPSHOT_DEV
+int is_hibernate_resume_dev(dev_t dev);
+#else
+static inline int is_hibernate_resume_dev(dev_t dev) { return 0; }
+#endif
/* Hibernation and suspend events */
#define PM_HIBERNATION_PREPARE 0x0001 /* Going to hibernate */
@@ -427,6 +493,7 @@
/* kernel/power/main.c */
extern int register_pm_notifier(struct notifier_block *nb);
extern int unregister_pm_notifier(struct notifier_block *nb);
+extern void ksys_sync_helper(void);
#define pm_notifier(fn, pri) { \
static struct notifier_block fn##_nb = \
@@ -436,14 +503,14 @@
/* drivers/base/power/wakeup.c */
extern bool events_check_enabled;
-extern unsigned int pm_wakeup_irq;
extern suspend_state_t pm_suspend_target_state;
extern bool pm_wakeup_pending(void);
extern void pm_system_wakeup(void);
extern void pm_system_cancel_wakeup(void);
-extern void pm_wakeup_clear(bool reset);
+extern void pm_wakeup_clear(unsigned int irq_number);
extern void pm_system_irq_wakeup(unsigned int irq_number);
+extern unsigned int pm_wakeup_irq(void);
extern bool pm_get_wakeup_count(unsigned int *count, bool block);
extern bool pm_save_wakeup_count(unsigned int count);
extern void pm_wakep_autosleep_enabled(bool set);
@@ -464,6 +531,8 @@
{
return 0;
}
+
+static inline void ksys_sync_helper(void) {}
#define pm_notifier(fn, pri) do { (void)(fn); } while (0)
@@ -507,39 +576,5 @@
static inline void queue_up_suspend_work(void) {}
#endif /* !CONFIG_PM_AUTOSLEEP */
-
-#ifdef CONFIG_ARCH_SAVE_PAGE_KEYS
-/*
- * The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture
- * to save/restore additional information to/from the array of page
- * frame numbers in the hibernation image. For s390 this is used to
- * save and restore the storage key for each page that is included
- * in the hibernation image.
- */
-unsigned long page_key_additional_pages(unsigned long pages);
-int page_key_alloc(unsigned long pages);
-void page_key_free(void);
-void page_key_read(unsigned long *pfn);
-void page_key_memorize(unsigned long *pfn);
-void page_key_write(void *address);
-
-#else /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
-
-static inline unsigned long page_key_additional_pages(unsigned long pages)
-{
- return 0;
-}
-
-static inline int page_key_alloc(unsigned long pages)
-{
- return 0;
-}
-
-static inline void page_key_free(void) {}
-static inline void page_key_read(unsigned long *pfn) {}
-static inline void page_key_memorize(unsigned long *pfn) {}
-static inline void page_key_write(void *address) {}
-
-#endif /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
#endif /* _LINUX_SUSPEND_H */
--
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