linux-kernel - [RFC PATCH 09/17] verification/rvgen: Allow spaces in and events strings

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Message-ID: <20250814150809.140739-10-gmonaco@redhat.com>
Date: Thu, 14 Aug 2025 17:08:01 +0200
From: Gabriele Monaco <gmonaco@...hat.com>
To: linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-trace-kernel@...r.kernel.org
Cc: Gabriele Monaco <gmonaco@...hat.com>,
	Nam Cao <namcao@...utronix.de>,
	Tomas Glozar <tglozar@...hat.com>,
	Juri Lelli <jlelli@...hat.com>,
	Clark Williams <williams@...hat.com>,
	John Kacur <jkacur@...hat.com>
Subject: [RFC PATCH 09/17] verification/rvgen: Allow spaces in and events strings

Currently the automata parser assumes event strings don't have any
space, this stands true for event names, but can be a wrong assumption
if we want to store other information in the event strings (e.g.
constraints for hybrid automata).

Adapt the parser logic to allow spaces in the event strings.

Signed-off-by: Gabriele Monaco <gmonaco@...hat.com>
---
 tools/verification/rvgen/rvgen/automata.py | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/verification/rvgen/rvgen/automata.py b/tools/verification/rvgen/rvgen/automata.py
index 76d7a3cfaec6..c637cf4ee749 100644
--- a/tools/verification/rvgen/rvgen/automata.py
+++ b/tools/verification/rvgen/rvgen/automata.py
@@ -127,14 +127,13 @@ class Automata:
             #  ------------ event is here ------------^^^^^
             if self.__dot_lines[cursor].split()[1] == "->":
                 line = self.__dot_lines[cursor].split()
-                event = line[-2].replace('"','')
+                event = "".join(line[line.index("label")+2:-1]).replace('"','')
 
                 # when a transition has more than one lables, they are like this
                 # "local_irq_enable\nhw_local_irq_enable_n"
                 # so split them.
 
-                event = event.replace("\\n", " ")
-                for i in event.split():
+                for i in event.split("\\n"):
                     events.append(i)
             cursor += 1
 
@@ -167,8 +166,8 @@ class Automata:
                 line = self.__dot_lines[cursor].split()
                 origin_state = line[0].replace('"','').replace(',','_')
                 dest_state = line[2].replace('"','').replace(',','_')
-                possible_events = line[-2].replace('"','').replace("\\n", " ")
-                for event in possible_events.split():
+                possible_events = "".join(line[line.index("label")+2:-1]).replace('"','')
+                for event in possible_events.split("\\n"):
                     matrix[states_dict[origin_state]][events_dict[event]] = dest_state
             cursor += 1
 
-- 
2.50.1