[PATCH 13/18] docs: xforms_lists: ignore context analysis and lock attributes

[Mauro Carvalho Chehab]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Drop context analysis and lock (tracking) attributes to avoid
kernel-doc warnings.

There are now lots of warnings like these:

    Documentation/core-api/kref:328: ../include/linux/kref.h:72: WARNING: Invalid C declaration: Expected end of definition. [error at 96]
      int kref_put_mutex (struct kref *kref, void (*release)(struct kref *kref), struct mutex *mutex) __cond_acquires(true# mutex)
      ------------------------------------------------------------------------------------------------^
    Documentation/core-api/kref:328: ../include/linux/kref.h:94: WARNING: Invalid C declaration: Expected end of definition. [error at 92]
      int kref_put_lock (struct kref *kref, void (*release)(struct kref *kref), spinlock_t *lock) __cond_acquires(true# lock)
      --------------------------------------------------------------------------------------------^

The regex is suggested by Mauro; mine was too greedy. Thanks.
Updated context analysis and lock macros list provided by PeterZ. Thanks.

[mchehab: modified to be applied after xforms_lists split]

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Closes: https://lore.kernel.org/all/20260107161548.45530e1c@xxxxxxxxxxxxxxxx/
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 tools/lib/python/kdoc/kdoc_parser.py  | 10 ++++++++++
 tools/lib/python/kdoc/xforms_lists.py |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/tools/lib/python/kdoc/kdoc_parser.py b/tools/lib/python/kdoc/kdoc_parser.py
index d7daf658e9d2..503a18212747 100644
--- a/tools/lib/python/kdoc/kdoc_parser.py
+++ b/tools/lib/python/kdoc/kdoc_parser.py
@@ -75,6 +75,16 @@ doc_begin_func = KernRe(str(doc_com) +			# initial " * '
 # is allowed.
 #
 struct_nested_prefixes = [
+    (re.compile(r"__cond_acquires\s*\("), ""),
+    (re.compile(r"__cond_releases\s*\("), ""),
+    (re.compile(r"__acquires\s*\("), ""),
+    (re.compile(r"__releases\s*\("), ""),
+    (re.compile(r"__must_hold\s*\("), ""),
+    (re.compile(r"__must_not_hold\s*\("), ""),
+    (re.compile(r"__must_hold_shared\s*\("), ""),
+    (re.compile(r"__cond_acquires_shared\s*\("), ""),
+    (re.compile(r"__acquires_shared\s*\("), ""),
+    (re.compile(r"__releases_shared\s*\("), ""),
     (re.compile(r'\bSTRUCT_GROUP\('), r'\1'),
 ]
 
diff --git a/tools/lib/python/kdoc/xforms_lists.py b/tools/lib/python/kdoc/xforms_lists.py
index e6e0302e5dd0..1bda7c4634c3 100644
--- a/tools/lib/python/kdoc/xforms_lists.py
+++ b/tools/lib/python/kdoc/xforms_lists.py
@@ -22,6 +22,8 @@ class CTransforms:
         (KernRe(r'\s*__aligned\s*\([^;]*\)', re.S), ' '),
         (KernRe(r'\s*__counted_by\s*\([^;]*\)', re.S), ' '),
         (KernRe(r'\s*__counted_by_(le|be)\s*\([^;]*\)', re.S), ' '),
+        (KernRe(r'\s*__guarded_by\s*\([^\)]*\)', re.S), ' '),
+        (KernRe(r'\s*__pt_guarded_by\s*\([^\)]*\)', re.S), ' '),
         (KernRe(r'\s*__packed\s*', re.S), ' '),
         (KernRe(r'\s*CRYPTO_MINALIGN_ATTR', re.S), ' '),
         (KernRe(r'\s*__private', re.S), ' '),
@@ -120,6 +122,7 @@ class CTransforms:
         (KernRe(r"__(?:re)?alloc_size\s*\(\s*\d+\s*(?:,\s*\d+\s*)?\) +"), ""),
         (KernRe(r"__diagnose_as\s*\(\s*\S+\s*(?:,\s*\d+\s*)*\) +"), ""),
         (KernRe(r"DECL_BUCKET_PARAMS\s*\(\s*(\S+)\s*,\s*(\S+)\s*\)"), r"\1, \2"),
+        (KernRe(r"__no_context_analysis\s*"), ""),
         (KernRe(r"__attribute_const__ +"), ""),
         (KernRe(r"__attribute__\s*\(\((?:[\w\s]+(?:\([^)]*\))?\s*,?)+\)\)\s+"), ""),
     ]
@@ -128,6 +131,8 @@ class CTransforms:
     var_xforms = [
         (KernRe(r"__read_mostly"), ""),
         (KernRe(r"__ro_after_init"), ""),
+        (KernRe(r'\s*__guarded_by\s*\([^\)]*\)', re.S), ""),
+        (KernRe(r'\s*__pt_guarded_by\s*\([^\)]*\)', re.S), ""),
         (KernRe(r"LIST_HEAD\(([\w_]+)\)"), r"struct list_head \1"),
         (KernRe(r"(?://.*)$"), ""),
         (KernRe(r"(?:/\*.*\*/)"), ""),
-- 
2.52.0