linux-kernel - [PATCH v3 25/30] docs: kdoc_re: add a helper class to declare C function matches

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Message-ID: <9d3d27d956b25921cf40410e59a17a86caef32f6.1769673038.git.mchehab+huawei@kernel.org>
Date: Thu, 29 Jan 2026 09:08:16 +0100
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Jonathan Corbet <corbet@....net>,
	Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	bpf@...r.kernel.org,
	intel-wired-lan@...ts.osuosl.org,
	linux-hardening@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Randy Dunlap <rdunlap@...radead.org>
Subject: [PATCH v3 25/30] docs: kdoc_re: add a helper class to declare C function matches

Add a more convenient class to match C functions and avoiding
issues at the beginning and ending of NestedMatch inits.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 tools/lib/python/kdoc/kdoc_re.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/lib/python/kdoc/kdoc_re.py b/tools/lib/python/kdoc/kdoc_re.py
index 5f455ffff7b2..a49b42e3d189 100644
--- a/tools/lib/python/kdoc/kdoc_re.py
+++ b/tools/lib/python/kdoc/kdoc_re.py
@@ -380,3 +380,14 @@ class NestedMatch:
         """
 
         return f'NestedMatch("{self.regex.regex.pattern}")'
+
+
+class CFunction(NestedMatch):
+    r"""
+    Variant of NestedMatch.
+
+    It overrides the init method to ensure that the regular expression will
+    start with a ``\b`` and end with a C function delimiter (open parenthesis).
+    """
+    def __init__(self, regex):
+        self.regex = KernRe(r"\b" + regex + r"\s*\(")
-- 
2.52.0