rb_set_commit_to_write

Name:rb_set_commit_to_write

Proto:static __always_inline void rb_set_commit_to_write(struct ring_buffer_per_cpu *cpu_buffer)

Type:void

Parameter:

Type	Parameter	Name
struct ring_buffer_per_cpu *	cpu_buffer

2473

again :

2474

max_count = nr_pages * 100

2476

When committed pages != READ_ONCE(write to tail ) cycle

2477

If uffer may be either ring_buffer or ring_buffer_per_cpu (cpu_buffer, !(--max_count)) Then Return

2479

If uffer may be either ring_buffer or ring_buffer_per_cpu (cpu_buffer, _is_reader_page* The unique thing about the reader page, is that, if the* writer is ever on it, the previous pointer never points* back to the reader page.) Then Return

2482

local_set( & write committed index , rb_page_write(committed pages ))

2484

rb_inc_page(cpu_buffer, & committed pages )

2486

If rb_page_write(committed pages ) Then write_stamp = page time stamp

2490

The "volatile" is due to gcc bugs ()

2492

When rb_commit_index(cpu_buffer) != rb_page_write(committed pages ) cycle

2495

local_set( & write committed index , rb_page_write(committed pages ))

2497

uffer may be either ring_buffer or ring_buffer_per_cpu (cpu_buffer, local_read( & write committed index ) & ~The buffer page counters, write and entries, must be reset* atomically when crossing page boundaries. To synchronize this* update, two counters are inserted into the number. One is* the actual counter for the write position or count on the page.)

2500

The "volatile" is due to gcc bugs ()

2504

The "volatile" is due to gcc bugs ()

2511

If Value for the false possibility is greater at compile time(committed pages != READ_ONCE(write to tail )) Then Go to again

**Caller**
Name	Describe
rb_end_commit

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