[PATCH v1 4/4] ring-buffer: Increment pages_read on remote ring buffer page swap

[Vincent Donnefort <vdonnefort@google.com>]

__rb_get_reader_page_from_remote() swaps in a new reader page without
incrementing cpu_buffer->pages_read. While this isn't an issue now as
trace remotes do not use buffer_percent, add this missing increment for
consistency.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
---
 kernel/trace/ring_buffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 6016d16d1566..ae33e64c7daa 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -5881,6 +5881,7 @@ __rb_get_reader_page_from_remote(struct ring_buffer_per_cpu *cpu_buffer)
 	cpu_buffer->reader_page->read = 0;
 	cpu_buffer->pages = &new_head->list;
 	cpu_buffer->lost_events = cpu_buffer->meta_page->reader.lost_events;
+	local_inc(&cpu_buffer->pages_read);
 
 	if (!rb_page_size(cpu_buffer->reader_page))
 		return NULL;
-- 
2.56.0.611.g1030f0b940-goog