lkml.org 
[lkml]   [2018]   [May]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 1/2] lockdep: Add a assert_in_softirq()
Date
From: Anna-Maria Gleixner <anna-maria@linutronix.de>

Instead of directly warn on wrong context, check if softirq context is
set. This check could be a nop on RT.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
include/linux/lockdep.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 6fc77d4dbdcd..59363c3047c6 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -608,11 +608,17 @@ do { \
"IRQs not disabled as expected\n"); \
} while (0)

+#define lockdep_assert_in_softirq() do { \
+ WARN_ONCE(debug_locks && !current->lockdep_recursion && \
+ !current->softirq_context, \
+ "Not in softirq context as expected\n"); \
+ } while (0)
#else
# define might_lock(lock) do { } while (0)
# define might_lock_read(lock) do { } while (0)
# define lockdep_assert_irqs_enabled() do { } while (0)
# define lockdep_assert_irqs_disabled() do { } while (0)
+# define lockdep_assert_in_softirq() do { } while (0)
#endif

#ifdef CONFIG_LOCKDEP
--
2.17.0
\
 
 \ /
  Last update: 2018-05-04 19:53    [W:0.042 / U:0.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site