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From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Noam Camus <noamca@mellanox.com>,
	Guenter Roeck <linux@roeck-us.net>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	<linux-snps-arc@lists.infradead.org>,
	Ingo Molnar <mingo@kernel.org>,
	"Will Deacon" <will.deacon@arm.com>,
	Gilad Ben Yossef <giladby@mellanox.com>
Subject: Re: Build failures in -next due to 'locking/atomic, arch/arc: Implement atomic_fetch_{add,sub,and,andnot,or,xor}()'
Date: Fri, 17 Jun 2016 17:36:11 +0200	[thread overview]
Message-ID: <576418EB.5090607@synopsys.com> (raw)
In-Reply-To: <20160617152208.GX30154@twins.programming.kicks-ass.net>

On Friday 17 June 2016 05:22 PM, Peter Zijlstra wrote:
> Question; why does atomic_read() have a full memory clobber on arc?
> 
> Will thinks its because you don't use a memory constraint for *v.

So that is only for CONFIG_ARC_PLAT_EZNPS and very liekly not needed. Although NPS
has some design constraints which Noam knows of better !

  reply	other threads:[~2016-06-17 15:36 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-17 14:36 Build failures in -next due to 'locking/atomic, arch/arc: Implement atomic_fetch_{add,sub,and,andnot,or,xor}()' Guenter Roeck
2016-06-17 14:39 ` Peter Zijlstra
2016-06-17 14:41   ` Peter Zijlstra
2016-06-17 14:52     ` Guenter Roeck
2016-06-17 15:00       ` Vineet Gupta
2016-06-17 15:22         ` Peter Zijlstra
2016-06-17 15:36           ` Vineet Gupta [this message]
2016-06-17 16:04     ` Ingo Molnar
2016-06-17 16:13       ` Peter Zijlstra
2016-06-17 20:22       ` Vineet Gupta
2016-06-17 21:27         ` Guenter Roeck
2016-06-18  7:05         ` Peter Zijlstra
2016-06-18 10:17           ` cross compilers [was build failure of sorts] Peter Zijlstra
2016-06-21  5:29             ` Vineet Gupta
2016-06-21  7:43               ` Peter Zijlstra
2016-06-21  9:28                 ` Vineet Gupta
2016-06-21  9:45                   ` Peter Zijlstra
2016-06-21  9:59                     ` Vineet Gupta
2016-06-21 10:04                     ` Peter Zijlstra
2016-06-22 10:04     ` Build failures in -next due to 'locking/atomic, arch/arc: Implement atomic_fetch_{add,sub,and,andnot,or,xor}()' Vineet Gupta
2016-06-22 10:24       ` Peter Zijlstra

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