Re: [Xen-devel] [PATCH/RFC 0/5] cpu_relax: introduce yield, remove lowlatency

2016-10-21 Thread David Miller
From: Christian Borntraeger Date: Fri, 21 Oct 2016 17:08:54 +0200 > On 10/21/2016 04:57 PM, David Miller wrote: >> From: Christian Borntraeger >> Date: Fri, 21 Oct 2016 13:58:53 +0200 >> >>> For spinning loops people did often use barrier() or

Re: [Xen-devel] [PATCH/RFC 0/5] cpu_relax: introduce yield, remove lowlatency

2016-10-21 Thread Christian Borntraeger
On 10/21/2016 04:57 PM, David Miller wrote: > From: Christian Borntraeger > Date: Fri, 21 Oct 2016 13:58:53 +0200 > >> For spinning loops people did often use barrier() or cpu_relax(). >> For most architectures cpu_relax and barrier are the same, but on >> some