add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/kernel/events/internal.h
..
..
@@ -4,13 +4,14 @@
4
4
 
5
5
 #include <linux/hardirq.h>
6
6
 #include <linux/uaccess.h>
7
+#include <linux/refcount.h>
7
8
 
8
9
 /* Buffer handling */
9
10
 
10
11
 #define RING_BUFFER_WRITABLE		0x01
11
12
 
12
-struct ring_buffer {
13
-	atomic_t			refcount;
13
+struct perf_buffer {
14
+	refcount_t			refcount;
14
15
 	struct rcu_head			rcu_head;
15
16
 #ifdef CONFIG_PERF_USE_VMALLOC
16
17
 	struct work_struct		work;
..
..
@@ -23,7 +24,7 @@
23
24
 	atomic_t			poll;		/* POLL_ for wakeups */
24
25
 
25
26
 	local_t				head;		/* write position    */
26
-	local_t				nest;		/* nested writers    */
27
+	unsigned int			nest;		/* nested writers    */
27
28
 	local_t				events;		/* event limit       */
28
29
 	local_t				wakeup;		/* wakeup stamp      */
29
30
 	local_t				lost;		/* nr records lost   */
..
..
@@ -40,7 +41,7 @@
40
41
 
41
42
 	/* AUX area */
42
43
 	long				aux_head;
43
-	local_t				aux_nest;
44
+	unsigned int			aux_nest;
44
45
 	long				aux_wakeup;	/* last aux_watermark boundary crossed by aux_head */
45
46
 	unsigned long			aux_pgoff;
46
47
 	int				aux_nr_pages;
..
..
@@ -48,25 +49,26 @@
48
49
 	atomic_t			aux_mmap_count;
49
50
 	unsigned long			aux_mmap_locked;
50
51
 	void				(*free_aux)(void *);
51
-	atomic_t			aux_refcount;
52
+	refcount_t			aux_refcount;
53
+	int				aux_in_sampling;
52
54
 	void				**aux_pages;
53
55
 	void				*aux_priv;
54
56
 
55
57
 	struct perf_event_mmap_page	*user_page;
56
-	void				*data_pages[0];
58
+	void				*data_pages[];
57
59
 };
58
60
 
59
-extern void rb_free(struct ring_buffer *rb);
61
+extern void rb_free(struct perf_buffer *rb);
60
62
 
61
63
 static inline void rb_free_rcu(struct rcu_head *rcu_head)
62
64
 {
63
-	struct ring_buffer *rb;
65
+	struct perf_buffer *rb;
64
66
 
65
-	rb = container_of(rcu_head, struct ring_buffer, rcu_head);
67
+	rb = container_of(rcu_head, struct perf_buffer, rcu_head);
66
68
 	rb_free(rb);
67
69
 }
68
70
 
69
-static inline void rb_toggle_paused(struct ring_buffer *rb, bool pause)
71
+static inline void rb_toggle_paused(struct perf_buffer *rb, bool pause)
70
72
 {
71
73
 	if (!pause && rb->nr_pages)
72
74
 		rb->paused = 0;
..
..
@@ -74,16 +76,16 @@
74
76
 		rb->paused = 1;
75
77
 }
76
78
 
77
-extern struct ring_buffer *
79
+extern struct perf_buffer *
78
80
 rb_alloc(int nr_pages, long watermark, int cpu, int flags);
79
81
 extern void perf_event_wakeup(struct perf_event *event);
80
-extern int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event,
82
+extern int rb_alloc_aux(struct perf_buffer *rb, struct perf_event *event,
81
83
 			pgoff_t pgoff, int nr_pages, long watermark, int flags);
82
-extern void rb_free_aux(struct ring_buffer *rb);
83
-extern struct ring_buffer *ring_buffer_get(struct perf_event *event);
84
-extern void ring_buffer_put(struct ring_buffer *rb);
84
+extern void rb_free_aux(struct perf_buffer *rb);
85
+extern struct perf_buffer *ring_buffer_get(struct perf_event *event);
86
+extern void ring_buffer_put(struct perf_buffer *rb);
85
87
 
86
-static inline bool rb_has_aux(struct ring_buffer *rb)
88
+static inline bool rb_has_aux(struct perf_buffer *rb)
87
89
 {
88
90
 	return !!rb->aux_nr_pages;
89
91
 }
..
..
@@ -92,7 +94,7 @@
92
94
 			  unsigned long size, u64 flags);
93
95
 
94
96
 extern struct page *
95
-perf_mmap_to_page(struct ring_buffer *rb, unsigned long pgoff);
97
+perf_mmap_to_page(struct perf_buffer *rb, unsigned long pgoff);
96
98
 
97
99
 #ifdef CONFIG_PERF_USE_VMALLOC
98
100
 /*
..
..
@@ -101,25 +103,30 @@
101
103
  * Required for architectures that have d-cache aliasing issues.
102
104
  */
103
105
 
104
-static inline int page_order(struct ring_buffer *rb)
106
+static inline int page_order(struct perf_buffer *rb)
105
107
 {
106
108
 	return rb->page_order;
107
109
 }
108
110
 
109
111
 #else
110
112
 
111
-static inline int page_order(struct ring_buffer *rb)
113
+static inline int page_order(struct perf_buffer *rb)
112
114
 {
113
115
 	return 0;
114
116
 }
115
117
 #endif
116
118
 
117
-static inline unsigned long perf_data_size(struct ring_buffer *rb)
119
+static inline int data_page_nr(struct perf_buffer *rb)
120
+{
121
+	return rb->nr_pages << page_order(rb);
122
+}
123
+
124
+static inline unsigned long perf_data_size(struct perf_buffer *rb)
118
125
 {
119
126
 	return rb->nr_pages << (PAGE_SHIFT + page_order(rb));
120
127
 }
121
128
 
122
-static inline unsigned long perf_aux_size(struct ring_buffer *rb)
129
+static inline unsigned long perf_aux_size(struct perf_buffer *rb)
123
130
 {
124
131
 	return rb->aux_nr_pages << PAGE_SHIFT;
125
132
 }
..
..
@@ -139,7 +146,7 @@
139
146
 			buf += written;					\
140
147
 		handle->size -= written;				\
141
148
 		if (!handle->size) {					\
142
-			struct ring_buffer *rb = handle->rb;		\
149
+			struct perf_buffer *rb = handle->rb;	\
143
150
 									\
144
151
 			handle->page++;					\
145
152
 			handle->page &= rb->nr_pages - 1;		\
..
..
@@ -203,16 +210,12 @@
203
210
 
204
211
 static inline int get_recursion_context(int *recursion)
205
212
 {
206
-	int rctx;
213
+	unsigned int pc = preempt_count();
214
+	unsigned char rctx = 0;
207
215
 
208
-	if (unlikely(in_nmi()))
209
-		rctx = 3;
210
-	else if (in_irq())
211
-		rctx = 2;
212
-	else if (in_serving_softirq())
213
-		rctx = 1;
214
-	else
215
-		rctx = 0;
216
+	rctx += !!(pc & (NMI_MASK));
217
+	rctx += !!(pc & (NMI_MASK | HARDIRQ_MASK));
218
+	rctx += !!(pc & (NMI_MASK | HARDIRQ_MASK | SOFTIRQ_OFFSET));
216
219
 
217
220
 	if (recursion[rctx])
218
221
 		return -1;