From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: paulmck@linux.vnet.ibm.com
Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org,
"Michael S. Tsirkin" <mst@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will.deacon@arm.com>,
virtualization@lists.linux-foundation.org,
"H. Peter Anvin" <hpa@zytor.com>,
sparclinux@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
user-mode-linux-devel@lists.sourceforge.net,
linux-sh@vger.kernel.org, Michael Ellerman <mpe@ellerman.id.au>,
x86@kernel.org, xen-devel@lists.xenproject.org,
Ingo Molnar <mingo@elte.hu>,
linux-xtensa@linux-xtensa.org, james.hogan@imgtec.com,
Arnd Bergmann <arnd@arndb.de>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
adi-buildroot-devel@lists.sourceforge.net, ddaney.cavm@gmail.com,
Thomas Gleixner <tglx@linutronix.de>,
linux-metag@vger.kernel.orglinux-a
Subject: Re: [v3,11/41] mips: reuse asm-generic/barrier.h
Date: Thu, 14 Jan 2016 15:04:18 -0800 [thread overview]
Message-ID: <56982972.7050609@imgtec.com> (raw)
In-Reply-To: <20160114222433.GI3818@linux.vnet.ibm.com>
On 01/14/2016 02:24 PM, Paul E. McKenney wrote:
> Actually, the Linux kernel doesn't have an acquire barrier, just an
> smp_load_acquire(). Or did someone sneak one in while I wasn't looking?
That was an exactly starting point for this discussion. This patch just
pulls out from MIPS files smp_load_acquire() and smp_store_release().
However, I put into LMO half year ago the patch
http://patchwork.linux-mips.org/patch/10506/ which replaces a generic
smp_mb with MIPS specific smp_release/acquire in that functions. This
patch also fixes use of SYNCs barriers in spin_locks/atomics/bitops for
Imagination MIPS CPUs too - it is just absent now for any Imagination
MIPS CPUs!
Michael later pointed me that it can be returned back with his series of
patches but discussion was already here.
- Leonid.
next prev parent reply other threads:[~2016-01-14 23:04 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1452426622-4471-12-git-send-email-mst@redhat.com>
2016-01-12 1:14 ` [v3,11/41] mips: reuse asm-generic/barrier.h Leonid Yegoshin
[not found] ` <56945366.2090504@imgtec.com>
2016-01-12 8:43 ` Michael S. Tsirkin
2016-01-12 9:27 ` Peter Zijlstra
2016-01-12 10:25 ` Peter Zijlstra
[not found] ` <20160112102555.GV6373@twins.programming.kicks-ass.net>
2016-01-12 10:40 ` Peter Zijlstra
2016-01-12 11:41 ` Will Deacon
2016-01-12 20:45 ` Leonid Yegoshin
[not found] ` <569565DA.2010903@imgtec.com>
2016-01-12 21:40 ` Peter Zijlstra
[not found] ` <20160112214003.GQ6357@twins.programming.kicks-ass.net>
2016-01-13 0:21 ` Leonid Yegoshin
2016-01-13 10:45 ` Will Deacon
[not found] ` <20160113104516.GE25458@arm.com>
2016-01-13 19:02 ` Leonid Yegoshin
[not found] ` <56969F4B.7070001@imgtec.com>
2016-01-13 20:48 ` Peter Zijlstra
2016-01-13 20:58 ` Leonid Yegoshin
2016-01-14 12:04 ` Will Deacon
[not found] ` <20160114120445.GB15828@arm.com>
2016-01-14 16:16 ` Paul E. McKenney
2016-01-14 19:42 ` Leonid Yegoshin
2016-01-14 20:15 ` Peter Zijlstra
[not found] ` <20160114201513.GI6357@twins.programming.kicks-ass.net>
2016-01-14 20:36 ` Paul E. McKenney
2016-01-14 20:46 ` Peter Zijlstra
2016-01-14 20:46 ` Leonid Yegoshin
2016-01-14 21:34 ` Paul E. McKenney
[not found] ` <20160114213440.GG3818@linux.vnet.ibm.com>
2016-01-14 21:45 ` Leonid Yegoshin
2016-01-14 22:24 ` Paul E. McKenney
2016-01-14 23:04 ` Leonid Yegoshin [this message]
2016-01-14 20:12 ` Leonid Yegoshin
[not found] ` <56980145.5030901@imgtec.com>
2016-01-14 20:48 ` Paul E. McKenney
2016-01-14 21:24 ` Leonid Yegoshin
2016-01-14 22:20 ` Paul E. McKenney
[not found] ` <20160114222046.GH3818@linux.vnet.ibm.com>
2016-01-15 9:57 ` Will Deacon
2016-01-15 18:54 ` Leonid Yegoshin
2016-01-26 10:24 ` Peter Zijlstra
2016-01-26 10:32 ` Peter Zijlstra
2016-01-26 11:09 ` Will Deacon
[not found] ` <20160126110053.GA21553@arm.com>
2016-01-26 20:11 ` Paul E. McKenney
2016-01-27 8:35 ` [PATCH] documentation: Add disclaimer Peter Zijlstra
[not found] ` <20160127083546.GJ6357@twins.programming.kicks-ass.net>
2016-01-27 10:11 ` Will Deacon
2016-04-14 21:40 ` Paul E. McKenney
2016-01-27 14:57 ` David Howells
[not found] ` <15882.1453906627@warthog.procyon.org.uk>
2016-01-27 23:35 ` Paul E. McKenney
2016-01-28 20:02 ` David Howells
2016-04-14 21:40 ` Paul E. McKenney
2016-01-26 19:44 ` [v3,11/41] mips: reuse asm-generic/barrier.h Paul E. McKenney
2016-01-18 8:19 ` Herbert Xu
[not found] ` <20160118081929.GA30420@gondor.apana.org.au>
2016-01-18 15:46 ` Paul E. McKenney
2016-01-26 16:52 ` Boqun Feng
[not found] ` <20160126165207.GB6029@fixme-laptop.cn.ibm.com>
2016-01-26 17:22 ` Peter Zijlstra
2016-01-26 19:44 ` Linus Torvalds
[not found] ` <CA+55aFzcC6C8imPs5vk4yH1Y2YHjnAdFM9HCkVs04COxuDQH6w@mail.gmail.com>
2016-01-26 20:10 ` Paul E. McKenney
[not found] ` <20160126201037.GU4503@linux.vnet.ibm.com>
2016-01-26 22:15 ` Linus Torvalds
[not found] ` <CA+55aFxjb+2rs2wVHtiSCcOzgMrE8H=yDeNcjyujPQudDCtLgw@mail.gmail.com>
2016-01-26 22:33 ` Linus Torvalds
[not found] ` <CA+55aFwxTJd+uibcxtZD3tGnj_n=LMwyAa0s8qyx_OF0OMWQkA@mail.gmail.com>
2016-01-26 23:29 ` Paul E. McKenney
2016-01-26 23:45 ` Linus Torvalds
[not found] ` <CA+55aFyD94yaA1QzXgfeO18T-czY3TVUi5n6r-9jOUObDeR-zQ@mail.gmail.com>
2016-01-27 0:57 ` Paul E. McKenney
2016-01-27 2:04 ` Boqun Feng
[not found] ` <20160127020447.GA1293@fixme-laptop.cn.ibm.com>
2016-01-27 23:30 ` Paul E. McKenney
2016-01-27 7:51 ` Peter Zijlstra
2016-01-27 8:05 ` Linus Torvalds
2016-01-26 19:51 ` Paul E. McKenney
2016-01-13 22:26 ` Leonid Yegoshin
[not found] ` <5696CF08.8080700@imgtec.com>
2016-01-14 9:24 ` Michael S. Tsirkin
2016-01-14 12:14 ` Will Deacon
[not found] ` <20160114121449.GC15828@arm.com>
2016-01-14 19:28 ` Leonid Yegoshin
[not found] ` <5697F6D2.60409@imgtec.com>
2016-01-14 20:34 ` Paul E. McKenney
2016-01-14 21:01 ` Leonid Yegoshin
2016-01-14 21:29 ` Paul E. McKenney
2016-01-14 21:36 ` Leonid Yegoshin
2016-01-14 22:55 ` Paul E. McKenney
2016-01-14 23:33 ` Leonid Yegoshin
2016-01-15 0:47 ` Paul E. McKenney
2016-01-15 1:07 ` Leonid Yegoshin
2016-01-27 11:26 ` Maciej W. Rozycki
[not found] ` <alpine.DEB.2.00.1601271116520.5958@tp.orcam.me.uk>
2016-01-28 0:48 ` Leonid Yegoshin
2016-01-29 13:38 ` Maciej W. Rozycki
2016-01-28 0:58 ` Leonid Yegoshin
2016-01-27 10:40 ` Ralf Baechle
[not found] ` <20160127104032.GB2939@linux-mips.org>
2016-01-27 12:09 ` Maciej W. Rozycki
2016-01-15 10:24 ` Will Deacon
2016-01-15 17:54 ` Paul E. McKenney
2016-01-15 19:28 ` Paul E. McKenney
2016-01-25 14:41 ` Will Deacon
[not found] ` <20160125144133.GB22927@arm.com>
2016-01-26 1:06 ` Paul E. McKenney
[not found] ` <20160126010646.GH4503@linux.vnet.ibm.com>
2016-01-26 12:10 ` Will Deacon
[not found] ` <20160126121010.GD21553@arm.com>
2016-01-26 23:37 ` Paul E. McKenney
2016-01-27 10:23 ` Will Deacon
2016-01-15 8:55 ` Peter Zijlstra
[not found] ` <20160115085554.GF3421@worktop>
2016-01-15 9:13 ` Peter Zijlstra
2016-01-15 17:46 ` Paul E. McKenney
2016-01-15 21:27 ` Peter Zijlstra
2016-01-15 21:58 ` Paul E. McKenney
[not found] ` <20160115215853.GC3818@linux.vnet.ibm.com>
2016-01-25 16:42 ` Will Deacon
2016-01-26 6:03 ` Paul E. McKenney
2016-01-26 10:19 ` Peter Zijlstra
2016-01-26 12:16 ` Will Deacon
2016-01-26 14:35 ` Boqun Feng
2016-01-26 19:58 ` Paul E. McKenney
[not found] ` <20160126195820.GS4503@linux.vnet.ibm.com>
2016-01-27 10:25 ` Will Deacon
2016-01-27 23:32 ` Paul E. McKenney
[not found] ` <20160126101927.GD6357@twins.programming.kicks-ass.net>
2016-01-26 20:13 ` Paul E. McKenney
2016-01-27 8:39 ` Peter Zijlstra
2016-01-15 17:39 ` Paul E. McKenney
2016-01-15 21:29 ` Peter Zijlstra
2016-01-15 22:01 ` Paul E. McKenney
2016-01-25 18:02 ` Will Deacon
[not found] ` <20160125180234.GA26732@arm.com>
2016-01-26 6:12 ` Paul E. McKenney
2016-01-26 10:15 ` Peter Zijlstra
[not found] ` <20160112103913-mutt-send-email-mst@redhat.com>
2016-01-12 9:51 ` Peter Zijlstra
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