lkml.org 
[lkml]   [2016]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 3/3] xen: support runqueue steal time on xen
From
Date
On 05/07/16 17:23, Stefano Stabellini wrote:
> On Wed, 22 Jun 2016, Juergen Gross wrote:
>> Up to now reading the stolen time of a remote cpu was not possible in a
>> performant way under Xen. This made support of runqueue steal time via
>> paravirt_steal_rq_enabled impossible.
>>
>> With the addition of an appropriate hypervisor interface this is now
>> possible, so add the support.
>>
>> Signed-off-by: Juergen Gross <jgross@suse.com>
>> ---
>> drivers/xen/time.c | 42 +++++++++++++++++++++++++-----------------
>> 1 file changed, 25 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/xen/time.c b/drivers/xen/time.c
>> index 2257b66..65afbe9 100644
>> --- a/drivers/xen/time.c
>> +++ b/drivers/xen/time.c
>> @@ -19,6 +19,9 @@
>> /* runstate info updated by Xen */
>> static DEFINE_PER_CPU(struct vcpu_runstate_info, xen_runstate);
>>
>> +/* runstate info of remote cpu accessible */
>> +static bool xen_runstate_remote;
>
> Honestly I would rather have one global variable less if it means only
> dropping one BUG_ON.

Okay, I'll remove it.


Juergen

\
 
 \ /
  Last update: 2016-07-06 07:01    [W:0.040 / U:18.792 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site