From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
To: linux-kernel@vger.kernel.org
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
Ingo Molnar <mingo@redhat.com>, Jonathan Corbet <corbet@lwn.net>,
linux-doc@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
"Paul E . McKenney" <paulmck@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Randy Dunlap <rdunlap@infradead.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Logan Gunthorpe <logang@deltatee.com>,
Kurt Schwemmer <kurt.schwemmer@microsemi.com>,
Bjorn Helgaas <bhelgaas@google.com>,
"linux-pci@vger.kernel.org Felipe Balbi" <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org Kalle Valo" <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
Oleg Nesterov <oleg@redhat.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Michael Ellerman <mpe@ellerman.id.au>,
Arnd Bergmann <arnd@arndb.de>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] Documentation: Clarify better about the rwsem non-owner release issue
Date: Sat, 21 Mar 2020 22:19:38 -0400 [thread overview]
Message-ID: <20200322021938.175736-1-joel@joelfernandes.org> (raw)
Reword and clarify better about the rwsem non-owner release issue.
Link: https://lore.kernel.org/linux-pci/20200321212144.GA6475@google.com/
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
Documentation/locking/locktypes.rst | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/Documentation/locking/locktypes.rst b/Documentation/locking/locktypes.rst
index 6f2c0f5b041e..656dce72f11f 100644
--- a/Documentation/locking/locktypes.rst
+++ b/Documentation/locking/locktypes.rst
@@ -292,7 +292,7 @@ implementations to provide priority inheritance for all lock types except
the truly spinning ones. Priority inheritance on ownerless locks is
obviously impossible.
-For now the rwsem non-owner release excludes code which utilizes it from
-being used on PREEMPT_RT enabled kernels. In same cases this can be
-mitigated by disabling portions of the code, in other cases the complete
-functionality has to be disabled until a workable solution has been found.
+For now, a PREEMPT_RT kernel just disables code sections that perform a
+non-owner release of an rwsem. In some cases, parts of the code are disabled.
+In other cases, the complete functionality has to be disabled until a workable
+solution has been found.
--
2.25.1.696.g5e7596f4ac-goog
next reply other threads:[~2020-03-22 2:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 2:19 Joel Fernandes (Google) [this message]
2020-03-22 6:51 ` [PATCH] Documentation: Clarify better about the rwsem non-owner release issue Kalle Valo
2020-03-23 18:23 ` Joel Fernandes
2020-03-24 8:15 ` Will Deacon
2020-03-24 18:26 ` Joel Fernandes
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