kernel-doc: output source file name at SEE ALSO

for man pages, it is helpful to know from where the man page
were generated.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <ac25496a27a0c90494a634d342207ef1ff6216e9.1759327966.git.mchehab+huawei@kernel.org>

scripts/lib/kdoc/kdoc_item.py

@@ -5,8 +5,9 @@
 #
 
 class KdocItem:
-    def __init__(self, name, type, start_line, **other_stuff):
+    def __init__(self, name, fname, type, start_line, **other_stuff):
         self.name = name
+        self.fname = fname
         self.type = type
         self.declaration_start_line = start_line
         self.sections = {}

scripts/lib/kdoc/kdoc_output.py

@@ -630,10 +630,11 @@ class ManFormat(OutputFormat):
         """Adds a tail for all man pages"""
 
         # SEE ALSO section
+        self.data += f'.SH "SEE ALSO"' + "\n.PP\n"
+        self.data += (f"Kernel file \\fB{args.fname}\\fR\n")
         if len(self.symbols) >= 2:
             cur_name = self.arg_name(args, name)
 
-            self.data += f'.SH "SEE ALSO"' + "\n.PP\n"
             related = []
             for arg in self.symbols:
                 out_name = self.arg_name(arg, arg.name)

scripts/lib/kdoc/kdoc_parser.py

@@ -254,8 +254,9 @@ SECTION_DEFAULT = "Description"  # default section
 
 class KernelEntry:
 
-    def __init__(self, config, ln):
+    def __init__(self, config, fname, ln):
         self.config = config
+        self.fname = fname
 
         self._contents = []
         self.prototype = ""
@@ -422,7 +423,8 @@ class KernelDoc:
         The actual output and output filters will be handled elsewhere
         """
 
-        item = KdocItem(name, dtype, self.entry.declaration_start_line, **args)
+        item = KdocItem(name, self.fname, dtype,
+                        self.entry.declaration_start_line, **args)
         item.warnings = self.entry.warnings
 
         # Drop empty sections
@@ -445,7 +447,7 @@ class KernelDoc:
         variables used by the state machine.
         """
 
-        self.entry = KernelEntry(self.config, ln)
+        self.entry = KernelEntry(self.config, self.fname, ln)
 
         # State flags
         self.state = state.NORMAL