linux-kernel - [tip: core/rcu] powerpc: Remove comment about read_barrier

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Date:   Sat, 25 Jan 2020 10:42:39 -0000
From:   "tip-bot2 for Will Deacon" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Will Deacon <will@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Paul E. McKenney" <paulmck@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: core/rcu] powerpc: Remove comment about read_barrier_depends()

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     c7e9c01f928a0e7e467ec3efe1b56bc566678bae
Gitweb:        https://git.kernel.org/tip/c7e9c01f928a0e7e467ec3efe1b56bc566678bae
Author:        Will Deacon <will@...nel.org>
AuthorDate:    Fri, 08 Nov 2019 17:01:18 
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Fri, 24 Jan 2020 10:33:52 -08:00

powerpc: Remove comment about read_barrier_depends()

'read_barrier_depends()' doesn't exist anymore so stop talking about it.

Signed-off-by: Will Deacon <will@...nel.org>
Acked-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 arch/powerpc/include/asm/barrier.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index fbe8df4..123adce 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -18,8 +18,6 @@
  * mb() prevents loads and stores being reordered across this point.
  * rmb() prevents loads being reordered across this point.
  * wmb() prevents stores being reordered across this point.
- * read_barrier_depends() prevents data-dependent loads being reordered
- *	across this point (nop on PPC).
  *
  * *mb() variants without smp_ prefix must order all types of memory
  * operations with one another. sync is the only instruction sufficient