[PATCH] doc: process: Add "Root-caused-by" and "Suggested-by"

[Kees Cook]

As recently pointed out by Linus, "Root-caused-by" is a good tag to include
since it can indicate significantly more work than "just" a Reported-by.
This adds it and "Suggested-by" (which was also missing) to the documented
list of tags. Additionally updates checkpatch.pl to match the process docs.

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
 Documentation/process/5.Posting.rst | 7 +++++++
 scripts/checkpatch.pl               | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/Documentation/process/5.Posting.rst b/Documentation/process/5.Posting.rst
index 645fa9c7388a..2ff01f76f02a 100644
--- a/Documentation/process/5.Posting.rst
+++ b/Documentation/process/5.Posting.rst
@@ -234,6 +234,13 @@ The tags in common use are:
    people who test our code and let us know when things do not work
    correctly.
 
+ - Suggested-by: names a person who suggested the solution, but may not
+   have constructed the full patch. A weaker version of `Co-Developed-by`.
+
+ - Root-caused-by: names a person who diagnosed the root cause of a
+   problem. This usually indicates significantly more work than a simple
+   `Reported-by`.
+
  - Cc: the named person received a copy of the patch and had the
    opportunity to comment on it.
 
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3d4040322ae1..a1ab82e70b54 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -464,9 +464,11 @@ our $logFunctions = qr{(?x:
 our $signature_tags = qr{(?xi:
 	Signed-off-by:|
 	Acked-by:|
+	Co-Developed-by:|
 	Tested-by:|
 	Reviewed-by:|
 	Reported-by:|
+	Root-caused-by:|
 	Suggested-by:|
 	To:|
 	Cc:
-- 
2.7.4


-- 
Kees Cook
Pixel Security