diff mbox series

ring-buffer: Fix bytes_dropped calculation issue

Message ID 20250223070106.6781-1-yangfeng59949@163.com (mailing list archive)
State New
Headers show
Series ring-buffer: Fix bytes_dropped calculation issue | expand

Commit Message

Feng Yang Feb. 23, 2025, 7:01 a.m. UTC 
From: Feng Yang <yangfeng@kylinos.cn>

The calculation of bytes-dropped and bytes_dropped_nested is reversed.
Although it does not affect the final calculation of total_dropped,
it should still be modified.

Fixes: 6c43e554a2a5 ("ring-buffer: Add ring buffer startup selftest")
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
---
 kernel/trace/ring_buffer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index bb6089c2951e..510409f97992 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -7411,9 +7411,9 @@  static __init int rb_write_something(struct rb_test_data *data, bool nested)
 		/* Ignore dropped events before test starts. */
 		if (started) {
 			if (nested)
-				data->bytes_dropped += len;
-			else
 				data->bytes_dropped_nested += len;
+			else
+				data->bytes_dropped += len;
 		}
 		return len;
 	}