移去rt

hc

2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/stop_machine.h
..
..
@@ -24,18 +24,34 @@
24
24
 struct cpu_stop_work {
25
25
 	struct list_head	list;		/* cpu_stopper->works */
26
26
 	cpu_stop_fn_t		fn;
27
+	unsigned long		caller;
27
28
 	void			*arg;
28
29
 	struct cpu_stop_done	*done;
30
+};
31
+
32
+/*
33
+ * Structure to determine completion condition and record errors.  May
34
+ * be shared by works on different cpus.
35
+ */
36
+struct cpu_stop_done {
37
+	atomic_t		nr_todo;	/* nr left to execute */
38
+	int			ret;		/* collected return value */
39
+	struct completion	completion;	/* fired if nr_todo reaches 0 */
29
40
 };
30
41
 
31
42
 int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg);
32
43
 int stop_two_cpus(unsigned int cpu1, unsigned int cpu2, cpu_stop_fn_t fn, void *arg);
33
44
 bool stop_one_cpu_nowait(unsigned int cpu, cpu_stop_fn_t fn, void *arg,
34
45
 			 struct cpu_stop_work *work_buf);
35
-int stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg);
36
-int try_stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg);
37
46
 void stop_machine_park(int cpu);
38
47
 void stop_machine_unpark(int cpu);
48
+void stop_machine_yield(const struct cpumask *cpumask);
49
+int stop_one_cpu_async(unsigned int cpu, cpu_stop_fn_t fn, void *arg,
50
+		       struct cpu_stop_work *work_buf,
51
+		       struct cpu_stop_done *done);
52
+void cpu_stop_work_wait(struct cpu_stop_work *work_buf);
53
+
54
+extern void print_stop_info(const char *log_lvl, struct task_struct *task);
39
55
 
40
56
 #else	/* CONFIG_SMP */
41
57
 
..
..
@@ -81,19 +97,7 @@
81
97
 	return false;
82
98
 }
83
99
 
84
-static inline int stop_cpus(const struct cpumask *cpumask,
85
-			    cpu_stop_fn_t fn, void *arg)
86
-{
87
-	if (cpumask_test_cpu(raw_smp_processor_id(), cpumask))
88
-		return stop_one_cpu(raw_smp_processor_id(), fn, arg);
89
-	return -ENOENT;
90
-}
91
-
92
-static inline int try_stop_cpus(const struct cpumask *cpumask,
93
-				cpu_stop_fn_t fn, void *arg)
94
-{
95
-	return stop_cpus(cpumask, fn, arg);
96
-}
100
+static inline void print_stop_info(const char *log_lvl, struct task_struct *task) { }
97
101
 
98
102
 #endif	/* CONFIG_SMP */
99
103