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a53202ce7f
In this version, only support getting the counter for buffer full and implement the framework of how it works. Users can pass certain flag to fetch what field/statistics they expect to know. Each time it only returns one result. So do not pass multiple flags. Link: https://lkml.kernel.org/r/20250612061201.34272-4-kerneljasonxing@gmail.com Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Yushan Zhou <katrinzhou@tencent.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>