For domctl/sysctl we do whatever gives the cleanest API, and bump the
interface version number if the change is not backwards compatible.
-- Keir
On 04/05/2010 16:46, "George Dunlap" <George.Dunlap@xxxxxxxxxxxxx> wrote:
> Keir, the new SCHEDOP_adjust_global needs to have the cpupool_id so that we
> can call the "global" parameters for the right pool. Would it make sense to
> overload the domid in DOMCTL, making it the cpupool_id if the command is
> XEN_DOMCTL_SCHEDOP_{get,put}_global_info? Or should we put it somewhere
> else? I glanced around the other hypercalls, and nothing seems much better;
> the cpupools stuff is in the DOMCTL file anyway.
>
> -George
>
> On Mon, May 3, 2010 at 10:29 PM, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
> wrote:
>> Hmm, and it also needs to be adjusted for the new cpu pools stuff. I'll take
>> a look at it tomorrow.
>> -George
>>
>>
>>
>>
>> On Mon, May 3, 2010 at 4:50 PM, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
>> wrote:
>>> Also, the SCHEDOP needs an xsm callback; but I'm not an expert enough in the
>>> xsm framework to say what it needs.
>>>
>>> Other than that:
>>>
>>> Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
>>>
>>>
>>> On Mon, Apr 19, 2010 at 6:54 AM, Dulloor <dulloor@xxxxxxxxx> wrote:
>>>> You don't have to explicitly set adjust_global to NULL for credit and sedf.
>>>>
>>>> -dulloor
>>>>
>>>> On Mon, Apr 19, 2010 at 9:39 AM, Kathy Hadley
>>>> <Kathy.Hadley@xxxxxxxxxxxxxxx> wrote:
>>>>> Resubmitting now that I have been added to the Xen-devel mailing list.
>>>>>
>>>>> Kathy Hadley
>>>>> DornerWorks, Ltd.
>>>>>
>>>>>
>>>>> From: Kathy Hadley
>>>>> Sent: Friday, April 16, 2010 10:14 AM
>>>>> To: 'xen-devel@xxxxxxxxxxxxxxxxxxx'
>>>>> Cc: 'Keir.Fraser@xxxxxxxxxx'
>>>>> Subject: [Xen-Devel] [PATCH 1/1] Add .adjust_global callback
>>>>>
>>>>> This patch adds an .adjust_global scheduler callback function, which
>>>>> allows adjusting the global scheduler parameters (rather than just one
>>>>> domain¹s parameters). This patch supports the addition of an ARINC 653
>>>>> scheduler (which will be submitted in a subsequent patch), and was
>>>>> suggested by George Dunlap and Keir Fraser in response to an earlier patch
>>>>> (ref: [Xen-devel] [PATCH 1/1] Xen ARINC 653 scheduler).
>>>>>
>>>>> Thanks and regards,
>>>>>
>>>>>
>>>>>
>>>>> Kathy Hadley
>>>>> DornerWorks, Ltd.
>>>>> Embedded Systems Engineering
>>>>>
>>>>> 3445 Lake Eastbrook Blvd SE
>>>>> Grand Rapids, MI 49546 Direct: 616.389.6127 Tel: 616.245.8369
>>>>> Fax: 616.245.8372 Kathy.Hadley@xxxxxxxxxxxxxxx
>>>>> <mailto:Kathy.Hadley@xxxxxxxxxxxxxxx> www.DornerWorks.com
>>>>> <http://www.dornerworks.com/>
>>>>> Honored as one of the 2010 ³Michigan 50 Companies to Watch²
>>>>> diff -rupN a/xen/common/domctl.c b/xen/common/domctl.c ---
>>>>> a/xen/common/domctl.c 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/common/domctl.c 2010-04-14 10:57:11.262796000 -0400 @@ -592,22
>>>>> +592,35 @@ long do_domctl(XEN_GUEST_HANDLE(xen_domc case
>>>>> XEN_DOMCTL_scheduler_op: { - struct domain *d; - - ret
>>>>> = -ESRCH; - if ( (d = rcu_lock_domain_by_id(op->domain)) == NULL )
>>>>> - break; + if ( (op->u.scheduler_op.cmd ==
>>>>> XEN_DOMCTL_SCHEDOP_put_global_info) + || (op->u.scheduler_op.cmd
>>>>> == XEN_DOMCTL_SCHEDOP_get_global_info) ) + { + ret =
>>>>> sched_adjust_global(&op->u.scheduler_op); + if
>>>>> (op->u.scheduler_op.cmd == XEN_DOMCTL_SCHEDOP_get_global_info)
>>>>> + { + if ( copy_to_guest(u_domctl, op, 1) )
>>>>> + ret = -EFAULT; + } + } +
>>>>> else + { + struct domain *d; - ret =
>>>>> xsm_scheduler(d); - if ( ret ) - goto scheduler_op_out;
>>>>> + ret = -ESRCH; + if ( (d =
>>>>> rcu_lock_domain_by_id(op->domain)) == NULL ) + break;
>>>>> - ret = sched_adjust(d, &op->u.scheduler_op); - if (
>>>>> copy_to_guest(u_domctl, op, 1) ) - ret = -EFAULT; +
>>>>> ret = xsm_scheduler(d); + if ( ret ) + goto
>>>>> scheduler_op_out; + + ret = sched_adjust(d,
>>>>> &op->u.scheduler_op); + if ( copy_to_guest(u_domctl, op, 1) )
>>>>> + ret = -EFAULT; - scheduler_op_out: -
>>>>> rcu_unlock_domain(d); + scheduler_op_out: +
>>>>> rcu_unlock_domain(d); + } } break; diff -rupN
>>>>> a/xen/common/sched_credit.c b/xen/common/sched_credit.c ---
>>>>> a/xen/common/sched_credit.c 2010-04-07 12:12:06.000000000 -0400
>>>>> +++ b/xen/common/sched_credit.c 2010-04-13 17:30:40.710992000 -0400
>>>>> @@ -1404,6 +1404,7 @@ const struct scheduler sched_credit_def
>>>>> .wake = csched_vcpu_wake, .adjust =
>>>>> csched_dom_cntl, + .adjust_global = NULL, .pick_cpu =
>>>>> csched_cpu_pick, .do_schedule = csched_schedule, diff -rupN
>>>>> a/xen/common/sched_sedf.c b/xen/common/sched_sedf.c ---
>>>>> a/xen/common/sched_sedf.c 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/common/sched_sedf.c 2010-04-13 17:30:40.710992000 -0400 @@
>>>>> -1473,6 +1473,7 @@ const struct scheduler sched_sedf_def =
>>>>> .sleep = sedf_sleep, .wake = sedf_wake,
>>>>> .adjust = sedf_adjust, + .adjust_global = NULL, }; /* diff
>>>>> -rupN a/xen/common/schedule.c b/xen/common/schedule.c ---
>>>>> a/xen/common/schedule.c 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/common/schedule.c 2010-04-14 10:57:11.262796000 -0400 @@ -804,6
>>>>> +804,21 @@ long sched_adjust(struct domain *d, stru return ret; }
>>>>> +/* Adjust scheduling parameters globally */ +long
>>>>> sched_adjust_global(struct xen_domctl_scheduler_op *op) +{ + long ret;
>>>>> + + if ( (op->sched_id != ops.sched_id) + || ( (op->cmd !=
>>>>> XEN_DOMCTL_SCHEDOP_put_global_info) + && (op->cmd !=
>>>>> XEN_DOMCTL_SCHEDOP_get_global_info) ) ) + return -EINVAL; + +
>>>>> ret = SCHED_OP(adjust_global, op); + + return ret; +} + static void
>>>>> vcpu_periodic_timer_work(struct vcpu *v) { s_time_t now = NOW();
>>>>> diff -rupN a/xen/include/public/domctl.h b/xen/include/public/domctl.h ---
>>>>> a/xen/include/public/domctl.h 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/include/public/domctl.h 2010-04-14 10:57:11.262796000 -0400
>>>>> @@ -306,6 +306,8 @@ DEFINE_XEN_GUEST_HANDLE(xen_domctl_max_v /* Set or
>>>>> get info? */ #define XEN_DOMCTL_SCHEDOP_putinfo 0 #define
>>>>> XEN_DOMCTL_SCHEDOP_getinfo 1 +#define XEN_DOMCTL_SCHEDOP_put_global_info 2
>>>>> +#define XEN_DOMCTL_SCHEDOP_get_global_info 3 struct
>>>>> xen_domctl_scheduler_op { uint32_t sched_id; /* XEN_SCHEDULER_* */
>>>>> uint32_t cmd; /* XEN_DOMCTL_SCHEDOP_* */ diff -rupN
>>>>> a/xen/include/xen/sched.h b/xen/include/xen/sched.h ---
>>>>> a/xen/include/xen/sched.h 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/include/xen/sched.h 2010-04-13 17:30:40.710992000 -0400 @@ -472,6
>>>>> +472,7 @@ void sched_destroy_vcpu(struct vcpu *v); int
>>>>> sched_init_domain(struct domain *d); void sched_destroy_domain(struct
>>>>> domain *d); long sched_adjust(struct domain *, struct
>>>>> xen_domctl_scheduler_op *); +long sched_adjust_global(struct
>>>>> xen_domctl_scheduler_op *); int sched_id(void); void
>>>>> sched_tick_suspend(void); void sched_tick_resume(void); diff -rupN
>>>>> a/xen/include/xen/sched-if.h b/xen/include/xen/sched-if.h ---
>>>>> a/xen/include/xen/sched-if.h 2010-04-07 12:12:06.000000000 -0400 +++
>>>>> b/xen/include/xen/sched-if.h 2010-04-13 17:30:40.710992000 -0400
>>>>> @@ -76,6 +76,7 @@ struct scheduler { int (*pick_cpu)
>>>>> (struct vcpu *); int (*adjust) (struct domain *,
>>>>> struct xen_domctl_scheduler_op *);
>>>>> + int (*adjust_global) (struct xen_domctl_scheduler_op *);
>>>>> void (*dump_settings) (void); void
>>>>> (*dump_cpu_state) (int);
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Xen-devel mailing list
>>>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>>>> http://lists.xensource.com/xen-devel
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Xen-devel mailing list
>>>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>>>> http://lists.xensource.com/xen-devel
>>>>>
>>>>
>>>
>>
>>
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