On Mon, 17 Oct 2022 10:38:06 +0000 Zheng Yejian <zhengyejian1@xxxxxxxxxx> wrote: > After commit 4f36c2d85ced ("tracing: Increase tracing map KEYS_MAX size"), > 'keys' supports up to three fields. This looks good to me. Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> Steve, do you this this document fix should go into the stable trees? Thank you, > > Signed-off-by: Zheng Yejian <zhengyejian1@xxxxxxxxxx> > --- > Documentation/trace/histogram.rst | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/Documentation/trace/histogram.rst b/Documentation/trace/histogram.rst > index c1b685a38f6b..87bd772836c0 100644 > --- a/Documentation/trace/histogram.rst > +++ b/Documentation/trace/histogram.rst > @@ -39,7 +39,7 @@ Documentation written by Tom Zanussi > will use the event's kernel stacktrace as the key. The keywords > 'keys' or 'key' can be used to specify keys, and the keywords > 'values', 'vals', or 'val' can be used to specify values. Compound > - keys consisting of up to two fields can be specified by the 'keys' > + keys consisting of up to three fields can be specified by the 'keys' > keyword. Hashing a compound key produces a unique entry in the > table for each unique combination of component keys, and can be > useful for providing more fine-grained summaries of event data. > -- > 2.25.1 > -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>