linux-kernel - Re: [PATCH 4/6] Protectable Memory

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Message-Id: <20180212153156.GF20737@rapoport-lnx>
Date:   Mon, 12 Feb 2018 17:31:57 +0200
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Igor Stoppa <igor.stoppa@...wei.com>
Cc:     willy@...radead.org, rdunlap@...radead.org, corbet@....net,
        keescook@...omium.org, mhocko@...nel.org, labbott@...hat.com,
        jglisse@...hat.com, hch@...radead.org, cl@...ux.com,
        linux-security-module@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH 4/6] Protectable Memory

On Mon, Feb 12, 2018 at 03:41:57PM +0200, Igor Stoppa wrote:
> 
> 
> On 12/02/18 14:53, Mike Rapoport wrote:
> > 'scripts/kernel-doc -v -none 
> 
> That has a quite interesting behavior.
> 
> I run it on genalloc.c while I am in the process of adding the brackets
> to the function names in the kernel-doc description.
> 
> The brackets confuse the script and it fails to output the name of the
> function in the log:
> 
> lib/genalloc.c:123: info: Scanning doc for get_bitmap_entry
> lib/genalloc.c:139: info: Scanning doc for
> lib/genalloc.c:152: info: Scanning doc for
> lib/genalloc.c:164: info: Scanning doc for

 
> 
> The first function does not have the brackets.
> The others do. So what should I do with the missing brackets?
> Add them, according to the kernel docs, or leave them out?

Seems that kernel-doc does not consider () as a valid match for the
identifier :)
 
Can you please check with the below patch?

> I'd lean toward adding them.
> 
> --
> igor
 
-- 
Sincerely yours,
Mike.

>From 35255bc2d7d2a63be4f78a7bf4eec83ab0dc4f3f Mon Sep 17 00:00:00 2001
From: Mike Rapoport <rppt@...ux.vnet.ibm.com>
Date: Mon, 12 Feb 2018 17:19:04 +0200
Subject: [PATCH] scripts: kernel_doc: fixup reporting of function identifiers

When function description includes brackets after the function name as
suggested by Documentation/doc-guide/kernel-doc, the kernel-doc script
omits the function name from "Scanning doc for" report.
Extending match for identifier name with optional brackets fixes this
issue.

Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
---
 scripts/kernel-doc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index fee8952037b1..a6a9a8ef116c 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1873,7 +1873,7 @@ sub process_file($) {
 	    }
 	    elsif (/$doc_decl/o) {
 		$identifier = $1;
-		if (/\s*([\w\s]+?)\s*-/) {
+		if (/\s*([\w\s]+?)(\(\))?\s*-/) {
 		    $identifier = $1;
 		}
 
-- 
2.7.4