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ring-buffer: Fix bytes_dropped calculation issue

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[ Upstream commit c73f0b69648501978e8b3e8fa7eef7f4197d0481 ]

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.

Link: https://lore.kernel.org/20250223070106.6781-1-yangfeng59949@163.com
Fixes: 6c43e554a2 ("ring-buffer: Add ring buffer startup selftest")
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Feng Yang 2025-02-23 15:01:06 +08:00 • committed by Greg Kroah-Hartman
commit 4a760b682e
1 changed files with 2 additions and 2 deletions
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4
kernel/trace/ring_buffer.c
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@ -5195,9 +5195,9 @@ 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;
}