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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/include/linux/ring_buffer.h
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@@ -6,7 +6,7 @@
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 #include <linux/seq_file.h>
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 #include <linux/poll.h>
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-struct ring_buffer;
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+struct trace_buffer;
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 struct ring_buffer_iter;
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 /*
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@@ -77,13 +77,13 @@
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  *  else
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  *    ring_buffer_unlock_commit(buffer, event);
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  */
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-void ring_buffer_discard_commit(struct ring_buffer *buffer,
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+void ring_buffer_discard_commit(struct trace_buffer *buffer,
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 				struct ring_buffer_event *event);
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 /*
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  * size is in bytes for each per CPU buffer.
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  */
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-struct ring_buffer *
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+struct trace_buffer *
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 __ring_buffer_alloc(unsigned long size, unsigned flags, struct lock_class_key *key);
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 /*
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@@ -97,102 +97,103 @@
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 	__ring_buffer_alloc((size), (flags), &__key);	\
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 })
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-int ring_buffer_wait(struct ring_buffer *buffer, int cpu, bool full);
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-__poll_t ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
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-			  struct file *filp, poll_table *poll_table);
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-
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+int ring_buffer_wait(struct trace_buffer *buffer, int cpu, int full);
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+__poll_t ring_buffer_poll_wait(struct trace_buffer *buffer, int cpu,
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+			  struct file *filp, poll_table *poll_table, int full);
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+void ring_buffer_wake_waiters(struct trace_buffer *buffer, int cpu);
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 #define RING_BUFFER_ALL_CPUS -1
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-void ring_buffer_free(struct ring_buffer *buffer);
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+void ring_buffer_free(struct trace_buffer *buffer);
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-int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size, int cpu);
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+int ring_buffer_resize(struct trace_buffer *buffer, unsigned long size, int cpu);
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-void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val);
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+void ring_buffer_change_overwrite(struct trace_buffer *buffer, int val);
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-struct ring_buffer_event *ring_buffer_lock_reserve(struct ring_buffer *buffer,
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+struct ring_buffer_event *ring_buffer_lock_reserve(struct trace_buffer *buffer,
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 						   unsigned long length);
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-int ring_buffer_unlock_commit(struct ring_buffer *buffer,
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+int ring_buffer_unlock_commit(struct trace_buffer *buffer,
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 			      struct ring_buffer_event *event);
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-int ring_buffer_write(struct ring_buffer *buffer,
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+int ring_buffer_write(struct trace_buffer *buffer,
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 		      unsigned long length, void *data);
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-void ring_buffer_nest_start(struct ring_buffer *buffer);
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-void ring_buffer_nest_end(struct ring_buffer *buffer);
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+void ring_buffer_nest_start(struct trace_buffer *buffer);
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+void ring_buffer_nest_end(struct trace_buffer *buffer);
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 struct ring_buffer_event *
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-ring_buffer_peek(struct ring_buffer *buffer, int cpu, u64 *ts,
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+ring_buffer_peek(struct trace_buffer *buffer, int cpu, u64 *ts,
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 		 unsigned long *lost_events);
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 struct ring_buffer_event *
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-ring_buffer_consume(struct ring_buffer *buffer, int cpu, u64 *ts,
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+ring_buffer_consume(struct trace_buffer *buffer, int cpu, u64 *ts,
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 		    unsigned long *lost_events);
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 struct ring_buffer_iter *
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-ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu, gfp_t flags);
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+ring_buffer_read_prepare(struct trace_buffer *buffer, int cpu, gfp_t flags);
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 void ring_buffer_read_prepare_sync(void);
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 void ring_buffer_read_start(struct ring_buffer_iter *iter);
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 void ring_buffer_read_finish(struct ring_buffer_iter *iter);
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 struct ring_buffer_event *
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 ring_buffer_iter_peek(struct ring_buffer_iter *iter, u64 *ts);
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-struct ring_buffer_event *
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-ring_buffer_read(struct ring_buffer_iter *iter, u64 *ts);
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+void ring_buffer_iter_advance(struct ring_buffer_iter *iter);
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 void ring_buffer_iter_reset(struct ring_buffer_iter *iter);
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 int ring_buffer_iter_empty(struct ring_buffer_iter *iter);
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+bool ring_buffer_iter_dropped(struct ring_buffer_iter *iter);
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-unsigned long ring_buffer_size(struct ring_buffer *buffer, int cpu);
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+unsigned long ring_buffer_size(struct trace_buffer *buffer, int cpu);
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-void ring_buffer_reset_cpu(struct ring_buffer *buffer, int cpu);
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-void ring_buffer_reset(struct ring_buffer *buffer);
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+void ring_buffer_reset_cpu(struct trace_buffer *buffer, int cpu);
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+void ring_buffer_reset_online_cpus(struct trace_buffer *buffer);
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+void ring_buffer_reset(struct trace_buffer *buffer);
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 #ifdef CONFIG_RING_BUFFER_ALLOW_SWAP
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-int ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
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-			 struct ring_buffer *buffer_b, int cpu);
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+int ring_buffer_swap_cpu(struct trace_buffer *buffer_a,
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+			 struct trace_buffer *buffer_b, int cpu);
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 #else
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 static inline int
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-ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
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-		     struct ring_buffer *buffer_b, int cpu)
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+ring_buffer_swap_cpu(struct trace_buffer *buffer_a,
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+		     struct trace_buffer *buffer_b, int cpu)
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 {
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 	return -ENODEV;
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 }
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 #endif
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-bool ring_buffer_empty(struct ring_buffer *buffer);
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-bool ring_buffer_empty_cpu(struct ring_buffer *buffer, int cpu);
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+bool ring_buffer_empty(struct trace_buffer *buffer);
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+bool ring_buffer_empty_cpu(struct trace_buffer *buffer, int cpu);
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-void ring_buffer_record_disable(struct ring_buffer *buffer);
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-void ring_buffer_record_enable(struct ring_buffer *buffer);
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-void ring_buffer_record_off(struct ring_buffer *buffer);
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-void ring_buffer_record_on(struct ring_buffer *buffer);
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-bool ring_buffer_record_is_on(struct ring_buffer *buffer);
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-bool ring_buffer_record_is_set_on(struct ring_buffer *buffer);
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-void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu);
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-void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu);
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+void ring_buffer_record_disable(struct trace_buffer *buffer);
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+void ring_buffer_record_enable(struct trace_buffer *buffer);
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+void ring_buffer_record_off(struct trace_buffer *buffer);
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+void ring_buffer_record_on(struct trace_buffer *buffer);
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+bool ring_buffer_record_is_on(struct trace_buffer *buffer);
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+bool ring_buffer_record_is_set_on(struct trace_buffer *buffer);
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+void ring_buffer_record_disable_cpu(struct trace_buffer *buffer, int cpu);
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+void ring_buffer_record_enable_cpu(struct trace_buffer *buffer, int cpu);
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-u64 ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_entries(struct ring_buffer *buffer);
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-unsigned long ring_buffer_overruns(struct ring_buffer *buffer);
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-unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_dropped_events_cpu(struct ring_buffer *buffer, int cpu);
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-unsigned long ring_buffer_read_events_cpu(struct ring_buffer *buffer, int cpu);
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+u64 ring_buffer_oldest_event_ts(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_bytes_cpu(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_entries(struct trace_buffer *buffer);
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+unsigned long ring_buffer_overruns(struct trace_buffer *buffer);
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+unsigned long ring_buffer_entries_cpu(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_overrun_cpu(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_commit_overrun_cpu(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_dropped_events_cpu(struct trace_buffer *buffer, int cpu);
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+unsigned long ring_buffer_read_events_cpu(struct trace_buffer *buffer, int cpu);
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-u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu);
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-void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer,
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+u64 ring_buffer_time_stamp(struct trace_buffer *buffer, int cpu);
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+void ring_buffer_normalize_time_stamp(struct trace_buffer *buffer,
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 				      int cpu, u64 *ts);
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-void ring_buffer_set_clock(struct ring_buffer *buffer,
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+void ring_buffer_set_clock(struct trace_buffer *buffer,
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 			   u64 (*clock)(void));
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-void ring_buffer_set_time_stamp_abs(struct ring_buffer *buffer, bool abs);
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-bool ring_buffer_time_stamp_abs(struct ring_buffer *buffer);
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+void ring_buffer_set_time_stamp_abs(struct trace_buffer *buffer, bool abs);
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+bool ring_buffer_time_stamp_abs(struct trace_buffer *buffer);
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-size_t ring_buffer_page_len(void *page);
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+size_t ring_buffer_nr_pages(struct trace_buffer *buffer, int cpu);
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+size_t ring_buffer_nr_dirty_pages(struct trace_buffer *buffer, int cpu);
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-
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-void *ring_buffer_alloc_read_page(struct ring_buffer *buffer, int cpu);
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-void ring_buffer_free_read_page(struct ring_buffer *buffer, int cpu, void *data);
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-int ring_buffer_read_page(struct ring_buffer *buffer, void **data_page,
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+void *ring_buffer_alloc_read_page(struct trace_buffer *buffer, int cpu);
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+void ring_buffer_free_read_page(struct trace_buffer *buffer, int cpu, void *data);
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+int ring_buffer_read_page(struct trace_buffer *buffer, void **data_page,
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 			  size_t len, int cpu, int full);
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 struct trace_seq;