From: Peter Zijlstra <peterz@infradead.org>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Waiman Long <waiman.long@hp.com>,
tglx@linutronix.de, mingo@kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
xen-devel@lists.xenproject.org, kvm@vger.kernel.org,
paolo.bonzini@gmail.com, boris.ostrovsky@oracle.com,
paulmck@linux.vnet.ibm.com, riel@redhat.com,
torvalds@linux-foundation.org, raghavendra.kt@linux.vnet.ibm.com,
david.vrabel@citrix.com, oleg@redhat.com, gleb@redhat.com,
scott.norton@hp.com, chegu_vinod@hp.com
Subject: Re: [PATCH 03/11] qspinlock: Add pending bit
Date: Tue, 24 Jun 2014 10:24:22 +0200 [thread overview]
Message-ID: <20140624082422.GM13930@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <20140617210729.GB31817@laptop.dumpdata.com>
On Tue, Jun 17, 2014 at 05:07:29PM -0400, Konrad Rzeszutek Wilk wrote:
> > We are trying to make the fastpath as simple as possible as it may be
> > inlined. The complexity of the queue spinlock is in the slowpath.
>
> Sure, but then it shouldn't be called slowpath anymore as it is not
> slow.
Its common terminology to call the inline part the fast path and the
out-of-line call on failure the slow path.
next prev parent reply other threads:[~2014-06-24 10:14 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-15 12:46 [PATCH 00/11] qspinlock with paravirt support Peter Zijlstra
2014-06-15 12:46 ` [PATCH 01/11] qspinlock: A simple generic 4-byte queue spinlock Peter Zijlstra
2014-06-16 20:49 ` Konrad Rzeszutek Wilk
2014-06-17 20:03 ` Konrad Rzeszutek Wilk
2014-06-23 16:12 ` Peter Zijlstra
2014-06-23 16:20 ` Konrad Rzeszutek Wilk
2014-06-23 15:56 ` Peter Zijlstra
2014-06-23 16:16 ` Konrad Rzeszutek Wilk
2014-06-17 20:05 ` Konrad Rzeszutek Wilk
2014-06-23 16:26 ` Peter Zijlstra
2014-06-23 16:45 ` Konrad Rzeszutek Wilk
2014-06-15 12:46 ` [PATCH 02/11] qspinlock, x86: Enable x86-64 to use " Peter Zijlstra
2014-06-15 12:47 ` [PATCH 03/11] qspinlock: Add pending bit Peter Zijlstra
2014-06-17 20:36 ` Konrad Rzeszutek Wilk
2014-06-17 20:51 ` Waiman Long
2014-06-17 21:07 ` Konrad Rzeszutek Wilk
2014-06-17 21:10 ` Konrad Rzeszutek Wilk
2014-06-17 22:25 ` Waiman Long
2014-06-24 8:24 ` Peter Zijlstra [this message]
2014-06-18 11:29 ` Paolo Bonzini
2014-06-18 13:36 ` Konrad Rzeszutek Wilk
2014-06-23 16:35 ` Peter Zijlstra
2014-06-15 12:47 ` [PATCH 04/11] qspinlock: Extract out the exchange of tail code word Peter Zijlstra
2014-06-17 20:55 ` Konrad Rzeszutek Wilk
2014-06-18 11:37 ` Paolo Bonzini
2014-06-18 13:50 ` Konrad Rzeszutek Wilk
2014-06-18 15:46 ` Waiman Long
2014-06-18 15:49 ` Paolo Bonzini
2014-06-18 16:02 ` Konrad Rzeszutek Wilk
2014-06-24 10:47 ` Peter Zijlstra
2014-06-15 12:47 ` [PATCH 05/11] qspinlock: Optimize for smaller NR_CPUS Peter Zijlstra
2014-06-18 11:39 ` Paolo Bonzini
2014-07-07 14:35 ` Peter Zijlstra
2014-07-07 15:08 ` Paolo Bonzini
2014-07-07 15:35 ` Peter Zijlstra
2014-07-07 16:10 ` Paolo Bonzini
2014-06-18 15:57 ` Konrad Rzeszutek Wilk
2014-07-07 14:33 ` Peter Zijlstra
2014-06-15 12:47 ` [PATCH 06/11] qspinlock: Optimize pending bit Peter Zijlstra
2014-06-18 11:42 ` Paolo Bonzini
2014-06-15 12:47 ` [PATCH 07/11] qspinlock: Use a simple write to grab the lock, if applicable Peter Zijlstra
2014-06-18 16:36 ` Konrad Rzeszutek Wilk
2014-07-07 14:51 ` Peter Zijlstra
2014-06-15 12:47 ` [PATCH 08/11] qspinlock: Revert to test-and-set on hypervisors Peter Zijlstra
2014-06-16 21:57 ` Waiman Long
2014-06-18 16:40 ` Konrad Rzeszutek Wilk
2014-06-15 12:47 ` [PATCH 09/11] pvqspinlock, x86: Rename paravirt_ticketlocks_enabled Peter Zijlstra
2014-06-18 16:43 ` Konrad Rzeszutek Wilk
2014-06-15 12:47 ` [PATCH 10/11] qspinlock: Paravirt support Peter Zijlstra
2014-06-17 0:53 ` Waiman Long
2014-06-18 12:04 ` Paolo Bonzini
2014-06-20 13:46 ` Konrad Rzeszutek Wilk
2014-07-07 15:27 ` Peter Zijlstra
2014-07-15 14:23 ` Konrad Rzeszutek Wilk
[not found] ` <539F6AD5.4070301@hp.com>
2014-06-18 12:03 ` Paolo Bonzini
2014-06-18 15:26 ` Waiman Long
2014-07-07 15:20 ` Peter Zijlstra
2014-07-07 15:20 ` Peter Zijlstra
2014-06-15 12:47 ` [PATCH 11/11] qspinlock, kvm: Add paravirt support Peter Zijlstra
2014-06-22 16:36 ` Raghavendra K T
2014-07-07 15:23 ` Peter Zijlstra
2014-06-16 20:52 ` [PATCH 00/11] qspinlock with " Konrad Rzeszutek Wilk
2014-06-17 23:23 [PATCH 03/11] qspinlock: Add pending bit Konrad Rzeszutek Wilk
2014-06-24 8:46 ` Peter Zijlstra
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