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ring-buffer: Remove unused function ring_buffer_nr_pages()

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Because ring_buffer_nr_pages() is not an inline function and user accesses
buffer->buffers[cpu]->nr_pages directly, the function ring_buffer_nr_pages
is removed.

Signed-off-by: Jianhui Zhou <912460177@qq.com>
Link: https://lore.kernel.org/tencent_F4A7E9AB337F44E0F4B858D07D19EF460708@qq.com
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Jianhui Zhou 2024-08-05 19:36:31 +08:00 committed by Steven Rostedt (Google)
parent bcf86c01ca
commit 58f7e4d7ba
2 changed files with 0 additions and 13 deletions
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1
include/linux/ring_buffer.h
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@ -193,7 +193,6 @@ void ring_buffer_set_clock(struct trace_buffer *buffer,
void ring_buffer_set_time_stamp_abs(struct trace_buffer *buffer, bool abs);
bool ring_buffer_time_stamp_abs(struct trace_buffer *buffer);
size_t ring_buffer_nr_pages(struct trace_buffer *buffer, int cpu);
size_t ring_buffer_nr_dirty_pages(struct trace_buffer *buffer, int cpu);
struct buffer_data_read_page;

12
kernel/trace/ring_buffer.c
View File

@ -692,18 +692,6 @@ u64 ring_buffer_event_time_stamp(struct trace_buffer *buffer,
return ts;
}
/**
* ring_buffer_nr_pages - get the number of buffer pages in the ring buffer
* @buffer: The ring_buffer to get the number of pages from
* @cpu: The cpu of the ring_buffer to get the number of pages from
*
* Returns the number of pages used by a per_cpu buffer of the ring buffer.
*/
size_t ring_buffer_nr_pages(struct trace_buffer *buffer, int cpu)
{
return buffer->buffers[cpu]->nr_pages;
}
/**
* ring_buffer_nr_dirty_pages - get the number of used pages in the ring buffer
* @buffer: The ring_buffer to get the number of pages from