From: Mike Galbraith <efault@gmx.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Subject: [patch] locking, rwsem: Add missing __init_rwsem() for PREEMPT_RT
Date: Tue, 31 Aug 2021 08:38:19 +0200 [thread overview]
Message-ID: <50a936b7d8f12277d6ec7ed2ef0421a381056909.camel@gmx.de> (raw)
730633f0b7f95 became the first direct caller of __init_rwsem() vs the
usual init_rwsem(), exposing PREEMPT_RT's lack thereof. Add it.
Signed-off-by: Mike Galbraith <efault@gmx.de>
---
include/linux/rwsem.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -152,12 +152,18 @@ static inline void __rwsem_init(struct
}
#endif
+static inline void __init_rwsem(struct rw_semaphore *sem, const char *name,
+ struct lock_class_key *key)
+{
+ init_rwbase_rt(&(sem)->rwbase);
+ __rwsem_init(sem, name, key);
+}
+
#define init_rwsem(sem) \
do { \
static struct lock_class_key __key; \
\
- init_rwbase_rt(&(sem)->rwbase); \
- __rwsem_init((sem), #sem, &__key); \
+ __init_rwsem((sem), #sem, &__key); \
} while (0)
static __always_inline int rwsem_is_locked(struct rw_semaphore *sem)
next reply other threads:[~2021-08-31 6:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-31 6:38 Mike Galbraith [this message]
2021-08-31 9:54 ` [tip: locking/urgent] locking/rwsem: Add missing __init_rwsem() for PREEMPT_RT tip-bot2 for Mike Galbraith
2021-08-31 23:02 ` Mike Galbraith
2021-09-02 20:14 ` tip-bot2 for Mike Galbraith
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50a936b7d8f12277d6ec7ed2ef0421a381056909.camel@gmx.de \
--to=efault@gmx.de \
--cc=linux-kernel@vger.kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).