eBPF requires needing to know the size of the perf ring buffer structure. But it unfortunately has the same name as the generic ring buffer used by tracing and oprofile. To make it less ambiguous, rename the perf ring buffer structure to "perf_buffer". As other parts of the ring buffer code has "perf_" as the prefix, it only makes sense to give the ring buffer the "perf_" prefix as well.
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| @@ -582,7 +582,7 @@ struct swevent_hlist { · 581 unmodified lines | ||
| 582 | 582 | #define PERF_ATTACH_ITRACE 0x10 |
| 583 | 583 | |
| 584 | 584 | struct perf_cgroup; |
| 585 | −struct ring_buffer; | |
| 585 | +struct perf_buffer; | |
| 586 | 586 | |
| 587 | 587 | struct pmu_event_list { |
| 588 | 588 | raw_spinlock_t lock; |
| @@ -694,7 +694,7 @@ struct perf_event { · 105 unmodified lines | ||
| 694 | 694 | struct mutex mmap_mutex; |
| 695 | 695 | atomic_t mmap_count; |
| 696 | 696 | |
| 697 | − struct ring_buffer *rb; | |
| 697 | + struct perf_buffer *rb; | |
| 698 | 698 | struct list_head rb_entry; |
| 699 | 699 | unsigned long rcu_batches; |
| 700 | 700 | int rcu_pending; |
| @@ -854,7 +854,7 @@ struct perf_cpu_context { · 153 unmodified lines | ||
| 854 | 854 | |
| 855 | 855 | struct perf_output_handle { |
| 856 | 856 | struct perf_event *event; |
| 857 | − struct ring_buffer *rb; | |
| 857 | + struct perf_buffer *rb; | |
| 858 | 858 | unsigned long wakeup; |
| 859 | 859 | unsigned long size; |
| 860 | 860 | u64 aux_flags; |