From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/include/linux/clocksource.h | 101 ++++++++++++++++++++++++++++----------------------
1 files changed, 56 insertions(+), 45 deletions(-)
diff --git a/kernel/include/linux/clocksource.h b/kernel/include/linux/clocksource.h
index 2c3e23a..83a3ebf 100644
--- a/kernel/include/linux/clocksource.h
+++ b/kernel/include/linux/clocksource.h
@@ -23,7 +23,8 @@
struct clocksource;
struct module;
-#ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
+#if defined(CONFIG_ARCH_CLOCKSOURCE_DATA) || \
+ defined(CONFIG_GENERIC_GETTIMEOFDAY)
#include <asm/clocksource.h>
#endif
@@ -34,9 +35,19 @@
* Provides mostly state-free accessors to the underlying hardware.
* This is the structure used for system time.
*
- * @name: ptr to clocksource name
- * @list: list head for registration
- * @rating: rating value for selection (higher is better)
+ * @read: Returns a cycle value, passes clocksource as argument
+ * @mask: Bitmask for two's complement
+ * subtraction of non 64 bit counters
+ * @mult: Cycle to nanosecond multiplier
+ * @shift: Cycle to nanosecond divisor (power of two)
+ * @max_idle_ns: Maximum idle time permitted by the clocksource (nsecs)
+ * @maxadj: Maximum adjustment value to mult (~11%)
+ * @archdata: Optional arch-specific data
+ * @max_cycles: Maximum safe cycle value which won't overflow on
+ * multiplication
+ * @name: Pointer to clocksource name
+ * @list: List head for registration (internal)
+ * @rating: Rating value for selection (higher is better)
* To avoid rating inflation the following
* list should give you a guide as to how
* to assign your clocksource a rating
@@ -51,27 +62,23 @@
* 400-499: Perfect
* The ideal clocksource. A must-use where
* available.
- * @read: returns a cycle value, passes clocksource as argument
- * @enable: optional function to enable the clocksource
- * @disable: optional function to disable the clocksource
- * @mask: bitmask for two's complement
- * subtraction of non 64 bit counters
- * @mult: cycle to nanosecond multiplier
- * @shift: cycle to nanosecond divisor (power of two)
- * @max_idle_ns: max idle time permitted by the clocksource (nsecs)
- * @maxadj: maximum adjustment value to mult (~11%)
- * @max_cycles: maximum safe cycle value which won't overflow on multiplication
- * @flags: flags describing special properties
- * @archdata: arch-specific data
- * @suspend: suspend function for the clocksource, if necessary
- * @resume: resume function for the clocksource, if necessary
+ * @flags: Flags describing special properties
+ * @enable: Optional function to enable the clocksource
+ * @disable: Optional function to disable the clocksource
+ * @suspend: Optional suspend function for the clocksource
+ * @resume: Optional resume function for the clocksource
* @mark_unstable: Optional function to inform the clocksource driver that
* the watchdog marked the clocksource unstable
- * @owner: module reference, must be set by clocksource in modules
+ * @tick_stable: Optional function called periodically from the watchdog
+ * code to provide stable syncrhonization points
+ * @wd_list: List head to enqueue into the watchdog list (internal)
+ * @cs_last: Last clocksource value for clocksource watchdog
+ * @wd_last: Last watchdog value corresponding to @cs_last
+ * @owner: Module reference, must be set by clocksource in modules
*
* Note: This struct is not used in hotpathes of the timekeeping code
* because the timekeeper caches the hot path fields in its own data
- * structure, so no line cache alignment is required,
+ * structure, so no cache line alignment is required,
*
* The pointer to the clocksource itself is handed to the read
* callback. If you need extra information there you can wrap struct
@@ -80,35 +87,37 @@
* structure.
*/
struct clocksource {
- u64 (*read)(struct clocksource *cs);
- u64 mask;
- u32 mult;
- u32 shift;
- u64 max_idle_ns;
- u32 maxadj;
+ u64 (*read)(struct clocksource *cs);
+ u64 mask;
+ u32 mult;
+ u32 shift;
+ u64 max_idle_ns;
+ u32 maxadj;
#ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
struct arch_clocksource_data archdata;
#endif
- u64 max_cycles;
- const char *name;
- struct list_head list;
- int rating;
- int (*enable)(struct clocksource *cs);
- void (*disable)(struct clocksource *cs);
- unsigned long flags;
- void (*suspend)(struct clocksource *cs);
- void (*resume)(struct clocksource *cs);
- void (*mark_unstable)(struct clocksource *cs);
- void (*tick_stable)(struct clocksource *cs);
+ u64 max_cycles;
+ const char *name;
+ struct list_head list;
+ int rating;
+ enum vdso_clock_mode vdso_clock_mode;
+ unsigned long flags;
+
+ int (*enable)(struct clocksource *cs);
+ void (*disable)(struct clocksource *cs);
+ void (*suspend)(struct clocksource *cs);
+ void (*resume)(struct clocksource *cs);
+ void (*mark_unstable)(struct clocksource *cs);
+ void (*tick_stable)(struct clocksource *cs);
/* private: */
#ifdef CONFIG_CLOCKSOURCE_WATCHDOG
/* Watchdog related data, used by the framework */
- struct list_head wd_list;
- u64 cs_last;
- u64 wd_last;
+ struct list_head wd_list;
+ u64 cs_last;
+ u64 wd_last;
#endif
- struct module *owner;
+ struct module *owner;
};
/*
@@ -122,7 +131,7 @@
#define CLOCK_SOURCE_UNSTABLE 0x40
#define CLOCK_SOURCE_SUSPEND_NONSTOP 0x80
#define CLOCK_SOURCE_RESELECT 0x100
-
+#define CLOCK_SOURCE_VERIFY_PERCPU 0x200
/* simplify initialization of mask field */
#define CLOCKSOURCE_MASK(bits) GENMASK_ULL((bits) - 1, 0)
@@ -243,6 +252,11 @@
__clocksource_update_freq_scale(cs, 1000, khz);
}
+#ifdef CONFIG_ARCH_CLOCKSOURCE_INIT
+extern void clocksource_arch_init(struct clocksource *cs);
+#else
+static inline void clocksource_arch_init(struct clocksource *cs) { }
+#endif
extern int timekeeping_notify(struct clocksource *clock);
@@ -258,9 +272,6 @@
#define TIMER_OF_DECLARE(name, compat, fn) \
OF_DECLARE_1_RET(timer, name, compat, fn)
-
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
- TIMER_OF_DECLARE(name, compat, fn)
#ifdef CONFIG_TIMER_PROBE
extern void timer_probe(void);
--
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