From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jason Wessel <jason.wessel@windriver.com>,
Will Deacon <will.deacon@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
kgdb-bugreport@lists.sourceforge.net, linux-arm@vger.kernel.org
Subject: Re: [PATCH 4/5] kgdb: Use atomic operators which use barriers
Date: Fri, 2 Apr 2010 23:25:16 +0100 [thread overview]
Message-ID: <20100402222516.GA11073@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <alpine.LFD.2.00.1004021238270.3634@i5.linux-foundation.org>
On Fri, Apr 02, 2010 at 12:43:00PM -0700, Linus Torvalds wrote:
> Russell is wrong.
Actually, in future threads you end up agreeing with my position...
> The fact that maybe some ARM6 cache coherency implementation is pure and
> utter sh*t and never sees the changes without the same instruction that
> happens to be a memory barrier on that architecture does not make that
> cpu_relax() any more about memory barriers.
I'm not going to discuss it now; I'm on holiday. Wait until mid-next
week on this and I'll respond with a fuller reply.
next prev parent reply other threads:[~2010-04-02 22:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-02 18:32 [GIT PULL] kgdb fixes for 2.6.34-rc3 Jason Wessel
2010-04-02 18:32 ` [PATCH 1/5] kgdb: have ebin2mem call probe_kernel_write once Jason Wessel
2010-04-02 18:32 ` [PATCH 2/5] kgdbts,sh: Add in breakpoint pc offset for superh Jason Wessel
2010-04-02 18:32 ` [PATCH 3/5] kgdb: eliminate kgdb_wait(), all cpus enter the same way Jason Wessel
2010-04-02 18:32 ` [PATCH 4/5] kgdb: Use atomic operators which use barriers Jason Wessel
2010-04-02 18:32 ` [PATCH 5/5] kgdb: Turn off tracing while in the debugger Jason Wessel
2010-04-02 19:12 ` [PATCH 4/5] kgdb: Use atomic operators which use barriers Linus Torvalds
2010-04-02 19:37 ` Jason Wessel
2010-04-02 19:43 ` Linus Torvalds
2010-04-02 19:46 ` Linus Torvalds
2010-04-02 20:07 ` Linus Torvalds
2010-04-02 22:25 ` Russell King - ARM Linux [this message]
2010-04-02 23:24 ` Linus Torvalds
2010-04-03 16:08 ` Russell King - ARM Linux
2010-04-05 9:21 ` Pavel Machek
2010-04-05 14:56 ` Linus Torvalds
2010-04-02 19:47 ` [Kgdb-bugreport] [PATCH 4/5] kgdb: Use atomic operators whichuse barriers Jason Wessel
2010-04-02 19:47 ` Linus Torvalds
2010-04-02 20:00 ` Jason Wessel
2010-04-08 16:27 ` Dmitry Adamushko
2010-04-19 15:21 ` Will Deacon
[not found] ` <000501cad70a$26ca7e10$745f7a30$@deacon@arm.com>
2010-04-08 14:55 ` [PATCH 4/5] kgdb: Use atomic operators which use barriers Linus Torvalds
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