From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/include/linux/tick.h | 30 ++++++++++++++++++++++++------
1 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/kernel/include/linux/tick.h b/kernel/include/linux/tick.h
index 9e99133..a90a8f7 100644
--- a/kernel/include/linux/tick.h
+++ b/kernel/include/linux/tick.h
@@ -68,6 +68,12 @@
static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { }
#endif /* BROADCAST */
+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_HOTPLUG_CPU)
+extern void tick_offline_cpu(unsigned int cpu);
+#else
+static inline void tick_offline_cpu(unsigned int cpu) { }
+#endif
+
#ifdef CONFIG_GENERIC_CLOCKEVENTS
extern int tick_broadcast_oneshot_control(enum tick_broadcast_state state);
#else
@@ -102,16 +108,19 @@
TICK_DEP_BIT_POSIX_TIMER = 0,
TICK_DEP_BIT_PERF_EVENTS = 1,
TICK_DEP_BIT_SCHED = 2,
- TICK_DEP_BIT_CLOCK_UNSTABLE = 3
+ TICK_DEP_BIT_CLOCK_UNSTABLE = 3,
+ TICK_DEP_BIT_RCU = 4,
+ TICK_DEP_BIT_RCU_EXP = 5
};
+#define TICK_DEP_BIT_MAX TICK_DEP_BIT_RCU_EXP
#define TICK_DEP_MASK_NONE 0
#define TICK_DEP_MASK_POSIX_TIMER (1 << TICK_DEP_BIT_POSIX_TIMER)
#define TICK_DEP_MASK_PERF_EVENTS (1 << TICK_DEP_BIT_PERF_EVENTS)
#define TICK_DEP_MASK_SCHED (1 << TICK_DEP_BIT_SCHED)
#define TICK_DEP_MASK_CLOCK_UNSTABLE (1 << TICK_DEP_BIT_CLOCK_UNSTABLE)
-
-extern void register_tick_sched_wakeup_callback(void (*cb)(void));
+#define TICK_DEP_MASK_RCU (1 << TICK_DEP_BIT_RCU)
+#define TICK_DEP_MASK_RCU_EXP (1 << TICK_DEP_BIT_RCU_EXP)
#ifdef CONFIG_NO_HZ_COMMON
extern bool tick_nohz_enabled;
@@ -124,6 +133,7 @@
extern void tick_nohz_idle_exit(void);
extern void tick_nohz_irq_exit(void);
extern bool tick_nohz_idle_got_tick(void);
+extern ktime_t tick_nohz_get_next_hrtimer(void);
extern ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next);
extern unsigned long tick_nohz_get_idle_calls(void);
extern unsigned long tick_nohz_get_idle_calls_cpu(int cpu);
@@ -147,7 +157,11 @@
static inline void tick_nohz_idle_enter(void) { }
static inline void tick_nohz_idle_exit(void) { }
static inline bool tick_nohz_idle_got_tick(void) { return false; }
-
+static inline ktime_t tick_nohz_get_next_hrtimer(void)
+{
+ /* Next wake up is the tick period, assume it starts now */
+ return ktime_add(ktime_get(), TICK_NSEC);
+}
static inline ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next)
{
*delta_next = TICK_NSEC;
@@ -165,7 +179,7 @@
static inline bool tick_nohz_full_enabled(void)
{
- if (!context_tracking_is_enabled())
+ if (!context_tracking_enabled())
return false;
return tick_nohz_full_running;
@@ -197,6 +211,7 @@
enum tick_dep_bits bit);
extern void tick_nohz_dep_clear_signal(struct signal_struct *signal,
enum tick_dep_bits bit);
+extern bool tick_nohz_cpu_hotpluggable(unsigned int cpu);
/*
* The below are tick_nohz_[set,clear]_dep() wrappers that optimize off-cases
@@ -259,6 +274,10 @@
static inline bool tick_nohz_full_cpu(int cpu) { return false; }
static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { }
+static inline void tick_nohz_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
+static inline void tick_nohz_dep_clear_cpu(int cpu, enum tick_dep_bits bit) { }
+static inline bool tick_nohz_cpu_hotpluggable(unsigned int cpu) { return true; }
+
static inline void tick_dep_set(enum tick_dep_bits bit) { }
static inline void tick_dep_clear(enum tick_dep_bits bit) { }
static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
@@ -283,5 +302,4 @@
__tick_nohz_task_switch();
}
-ktime_t *get_next_event_cpu(unsigned int cpu);
#endif
--
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