From: Davidlohr Bueso <dave@stgolabs.net>
To: a.darwish@linutronix.de
Cc: bigeasy@linutronix.de, peterz@infradead.org, tglx@linutronix.de,
shung-hsi.yu@suse.com, dave@stgolabs.net,
linux-kernel@vger.kernel.org, Davidlohr Bueso <dbueso@suse.de>
Subject: [PATCH] seqlock,lockdep: Only check for preemption_disabled in non-rt
Date: Fri, 7 May 2021 16:39:51 -0700 [thread overview]
Message-ID: <20210507233951.78950-1-dave@stgolabs.net> (raw)
This silences the writer hitting this nonsensical warning on PREEMPT_RT.
Reported-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
include/linux/seqlock.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index f61e34fbaaea..c8f9253f1a2f 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -268,7 +268,9 @@ static inline bool __seqprop_preemptible(const seqcount_t *s)
static inline void __seqprop_assert(const seqcount_t *s)
{
+#ifndef CONFIG_PREEMPT_RT
lockdep_assert_preemption_disabled();
+#endif
}
#define __SEQ_RT IS_ENABLED(CONFIG_PREEMPT_RT)
--
2.26.2
next reply other threads:[~2021-05-07 23:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 23:39 Davidlohr Bueso [this message]
2021-05-07 23:47 ` [PATCH v2] seqlock,lockdep: Only check for preemption_disabled in non-rt Davidlohr Bueso
2021-05-12 8:44 ` Peter Zijlstra
2021-05-13 19:53 ` Davidlohr Bueso
2021-05-14 4:55 ` Ahmed S. Darwish
2021-05-12 9:47 ` [PATCH] " Ahmed S. Darwish
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