tracing: Set actual size after ring buffer resize

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Currently we can resize trace ringbuffer by writing a value into file
'buffer_size_kb', then by reading the file, we get the value that is
usually what we wrote. However, this value may be not actual size of
trace ring buffer because of the round up when doing resize in kernel,
and the actual size would be more useful.

Link: https://lore.kernel.org/linux-trace-kernel/20230705002705.576633-1-zhengyejian1@huawei.com

Cc: <mhiramat@kernel.org>
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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Zheng Yejian 2023-07-05 08:27:05 +08:00 • committed by Steven Rostedt (Google)

parent 6bba92881d

commit 6d98a0f2ac

1 changed files with 11 additions and 8 deletions

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kernel/trace/trace.c

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