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From: George Dunlap <george.dunlap@citrix.com>
To: Dario Faggioli <dario.faggioli@citrix.com>,
	xen-devel@lists.xenproject.org
Cc: George Dunlap <george.dunlap@eu.citrix.com>,
	Juergen Gross <jgross@suse.com>
Subject: Re: [PATCH 05/16] xen: sched: move pCPU initialization in an helper
Date: Wed, 23 Mar 2016 18:09:16 +0000	[thread overview]
Message-ID: <56F2DBCC.1090302@citrix.com> (raw)
In-Reply-To: <56F2D796.5010203@citrix.com>

On 23/03/16 17:51, George Dunlap wrote:
> On 18/03/16 19:04, Dario Faggioli wrote:
>> That will turn out useful in following patches, where such
>> code will need to be called more than just once. Create an
>> helper now, and move the code there, to avoid mixing code
>> motion and functional changes later.
>>
>> In Credit2, some style cleanup is also done.
>>
>> No functional change intended.
>>
>> Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
>> ---
>> Cc: George Dunlap <george.dunlap@eu.citrix.com>
>> ---
>>  xen/common/sched_credit.c  |   22 +++++++++++++---------
>>  xen/common/sched_credit2.c |   26 ++++++++++++++++----------
>>  2 files changed, 29 insertions(+), 19 deletions(-)
>>
>> diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c
>> index d4a0f5e..4488d7c 100644
>> --- a/xen/common/sched_credit.c
>> +++ b/xen/common/sched_credit.c
>> @@ -542,16 +542,11 @@ csched_alloc_pdata(const struct scheduler *ops, int cpu)
>>  }
>>  
>>  static void
>> -csched_init_pdata(const struct scheduler *ops, void *pdata, int cpu)
>> +init_pdata(struct csched_private *prv, struct csched_pcpu *spc, int cpu)
>>  {
>> -    struct csched_private *prv = CSCHED_PRIV(ops);
>> -    struct csched_pcpu * const spc = pdata;
>> -    unsigned long flags;
>> -
>> -    /* cpu data needs to be allocated, but STILL uninitialized */
>> -    ASSERT(spc && spc->runq.next == spc->runq.prev && spc->runq.next == NULL);
>> -
>> -    spin_lock_irqsave(&prv->lock, flags);
>> +    ASSERT(spin_is_locked(&prv->lock));
>> +    /* cpu data needs to be allocated, but STILL uninitialized. */
>> +    ASSERT(spc && spc->runq.next == NULL && spc->runq.prev == NULL);
> 
> Actually, Juergen, looks like Dario already agrees with us. ;-)
> 
> Obviously this should be updated in the previous patch instead.
> 
> With that done:
> 
> Reviewed-by: George Dunlap <george.dunlap@citrix.com>

Oops -- somehow still have Juergen's Fujitsu address in my addressbook...

 -G

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  reply	other threads:[~2016-03-23 18:09 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-18 19:03 [PATCH 00/16] Fixes and improvement (including hard affinity!) for Credit2 Dario Faggioli
2016-03-18 19:04 ` [PATCH 01/16] xen: sched: fix locking when allocating an RTDS pCPU Dario Faggioli
2016-03-19  2:22   ` Meng Xu
2016-03-23 15:37   ` George Dunlap
2016-03-18 19:04 ` [PATCH 02/16] xen: sched: add .init_pdata hook to the scheduler interface Dario Faggioli
2016-03-22  8:08   ` Juergen Gross
2016-03-23 17:32   ` George Dunlap
2016-03-18 19:04 ` [PATCH 03/16] xen: sched: make implementing .alloc_pdata optional Dario Faggioli
2016-03-19  2:23   ` Meng Xu
2016-03-21 14:22   ` Jan Beulich
2016-03-23 17:36     ` George Dunlap
2016-03-24  9:43       ` Jan Beulich
2016-03-24 13:14         ` Dario Faggioli
2016-03-21 14:48   ` Juergen Gross
2016-03-21 15:07     ` Jan Beulich
2016-04-01 17:01       ` Dario Faggioli
2016-04-04  4:21         ` Juergen Gross
2016-04-04  6:13         ` Jan Beulich
2016-04-05 16:01           ` Dario Faggioli
2016-03-23 17:38   ` George Dunlap
2016-03-18 19:04 ` [PATCH 04/16] xen: sched: implement .init_pdata in all schedulers Dario Faggioli
2016-03-19  2:24   ` Meng Xu
2016-03-22  8:03   ` Juergen Gross
2016-03-23 17:46     ` George Dunlap
2016-03-18 19:04 ` [PATCH 05/16] xen: sched: move pCPU initialization in an helper Dario Faggioli
2016-03-23 17:51   ` George Dunlap
2016-03-23 18:09     ` George Dunlap [this message]
2016-03-24 13:21     ` Dario Faggioli
2016-03-18 19:04 ` [PATCH 06/16] xen: sched: prepare a .switch_sched hook for Credit1 Dario Faggioli
2016-03-18 19:04 ` [PATCH 07/16] xen: sched: prepare a .switch_sched hook for Credit2 Dario Faggioli
2016-03-18 19:04 ` [PATCH 08/16] " Dario Faggioli
2016-03-19  2:24   ` Meng Xu
2016-03-21 14:25   ` Jan Beulich
2016-03-18 19:05 ` [PATCH 09/16] xen: sched: close potential races when switching scheduler to CPUs Dario Faggioli
2016-03-19  2:25   ` Meng Xu
2016-03-23 19:05   ` George Dunlap
2016-04-05 16:26     ` Dario Faggioli
2016-04-06 15:51       ` Dario Faggioli
2016-03-24 12:14   ` George Dunlap
2016-04-05 17:37     ` Dario Faggioli
2016-04-06 16:21       ` Dario Faggioli
2016-03-18 19:05 ` [PATCH 10/16] xen: sched: improve credit2 bootparams' scope, placement and signedness Dario Faggioli
2016-03-21 14:51   ` Juergen Gross
2016-03-24 12:20   ` George Dunlap
2016-03-18 19:05 ` [PATCH 11/16] xen: sched: on Credit2, don't reprogram the timer if idle Dario Faggioli
2016-03-24 15:03   ` George Dunlap
2016-03-18 19:05 ` [PATCH 12/16] xen: sched: fix per-socket runqueue creation in credit2 Dario Faggioli
2016-03-24 12:24   ` George Dunlap
2016-03-18 19:05 ` [PATCH 13/16] xen: sched: allow for choosing credit2 runqueues configuration at boot Dario Faggioli
2016-03-22  7:46   ` Juergen Gross
2016-03-24 12:36   ` George Dunlap
2016-03-18 19:05 ` [PATCH 14/16] xen: sched: per-core runqueues as default in credit2 Dario Faggioli
2016-03-24 12:37   ` George Dunlap
2016-03-18 19:06 ` [PATCH 15/16] xen: sched: scratch space for cpumasks on Credit2 Dario Faggioli
2016-03-18 19:27   ` Andrew Cooper
2016-03-24 12:44     ` George Dunlap
2016-03-24 12:56       ` Andrew Cooper
2016-03-24 13:10       ` Dario Faggioli
2016-03-18 19:06 ` [PATCH 16/16] xen: sched: implement vcpu hard affinity in Credit2 Dario Faggioli
2016-03-24 15:42   ` George Dunlap
2016-04-05 16:50     ` Dario Faggioli

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