From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>, Tim Deegan <tim@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>, Wei Liu <wl@xen.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
George Dunlap <george.dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Dario Faggioli <dfaggioli@suse.com>,
Julien Grall <julien.grall@arm.com>,
Jan Beulich <jbeulich@suse.com>
Subject: [Xen-devel] [PATCH v2 10/48] xen/sched: add scheduler helpers hiding vcpu
Date: Fri, 9 Aug 2019 16:57:55 +0200 [thread overview]
Message-ID: <20190809145833.1020-11-jgross@suse.com> (raw)
In-Reply-To: <20190809145833.1020-1-jgross@suse.com>
Add the following helpers using a sched_unit as input instead of a
vcpu:
- is_idle_unit() similar to is_idle_vcpu()
- is_unit_online() similar to is_vcpu_online()
- unit_runnable() like vcpu_runnable()
- sched_set_res() to set the current processor of an unit
- sched_unit_cpu() to get the current processor of an unit
- sched_{set|clear}_pause_flags[_atomic]() to modify pause_flags of the
associated vcpu(s)
- sched_idle_unit() to get the sched_unit pointer of the idle vcpu of a
specific physical cpu
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sched_credit.c | 3 +--
xen/common/schedule.c | 21 ++++++++--------
xen/include/xen/sched-if.h | 61 +++++++++++++++++++++++++++++++++++++++++++---
3 files changed, 68 insertions(+), 17 deletions(-)
diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c
index 22438a50e2..bdb97acd88 100644
--- a/xen/common/sched_credit.c
+++ b/xen/common/sched_credit.c
@@ -1660,8 +1660,7 @@ csched_runq_steal(int peer_cpu, int cpu, int pri, int balance_step)
SCHED_STAT_CRANK(migrate_queued);
WARN_ON(vc->is_urgent);
runq_remove(speer);
- vc->processor = cpu;
- vc->sched_unit->res = get_sched_res(cpu);
+ sched_set_res(vc->sched_unit, get_sched_res(cpu));
/*
* speer will start executing directly on cpu, without having to
* go through runq_insert(). So we must update the runnable count
diff --git a/xen/common/schedule.c b/xen/common/schedule.c
index 98afbb435f..d1a1103e4a 100644
--- a/xen/common/schedule.c
+++ b/xen/common/schedule.c
@@ -81,7 +81,7 @@ static spinlock_t *
sched_idle_switch_sched(struct scheduler *new_ops, unsigned int cpu,
void *pdata, void *vdata)
{
- idle_vcpu[cpu]->sched_unit->priv = NULL;
+ sched_idle_unit(cpu)->priv = NULL;
return &sched_free_cpu_lock;
}
@@ -373,12 +373,11 @@ int sched_init_vcpu(struct vcpu *v, unsigned int processor)
struct domain *d = v->domain;
struct sched_unit *unit;
- v->processor = processor;
-
if ( (unit = sched_alloc_unit(v)) == NULL )
return 1;
- unit->res = get_sched_res(processor);
+ sched_set_res(unit, get_sched_res(processor));
+
/* Initialise the per-vcpu timers. */
init_timer(&v->periodic_timer, vcpu_periodic_timer_fn,
v, v->processor);
@@ -492,8 +491,7 @@ int sched_move_domain(struct domain *d, struct cpupool *c)
sched_set_affinity(v, &cpumask_all, &cpumask_all);
- v->processor = new_p;
- v->sched_unit->res = get_sched_res(new_p);
+ sched_set_res(v->sched_unit, get_sched_res(new_p));
/*
* With v->processor modified we must not
* - make any further changes assuming we hold the scheduler lock,
@@ -831,8 +829,9 @@ void restore_vcpu_affinity(struct domain *d)
spinlock_t *lock;
unsigned int old_cpu = v->processor;
struct sched_unit *unit = v->sched_unit;
+ struct sched_resource *res;
- ASSERT(!vcpu_runnable(v));
+ ASSERT(!unit_runnable(unit));
/*
* Re-assign the initial processor as after resume we have no
@@ -865,15 +864,15 @@ void restore_vcpu_affinity(struct domain *d)
}
}
- v->processor = cpumask_any(cpumask_scratch_cpu(cpu));
- unit->res = get_sched_res(v->processor);
+ res = get_sched_res(cpumask_any(cpumask_scratch_cpu(cpu)));
+ sched_set_res(unit, res);
spin_unlock_irq(lock);
/* v->processor might have changed, so reacquire the lock. */
lock = unit_schedule_lock_irq(unit);
- unit->res = sched_pick_resource(vcpu_scheduler(v), unit);
- v->processor = unit->res->processor;
+ res = sched_pick_resource(vcpu_scheduler(v), unit);
+ sched_set_res(unit, res);
spin_unlock_irq(lock);
if ( old_cpu != v->processor )
diff --git a/xen/include/xen/sched-if.h b/xen/include/xen/sched-if.h
index 6844fd7bc7..d503fd2dec 100644
--- a/xen/include/xen/sched-if.h
+++ b/xen/include/xen/sched-if.h
@@ -59,6 +59,62 @@ static inline void set_sched_res(unsigned int cpu, struct sched_resource *res)
per_cpu(sched_res, cpu) = res;
}
+static inline bool is_idle_unit(const struct sched_unit *unit)
+{
+ return is_idle_vcpu(unit->vcpu_list);
+}
+
+static inline bool is_unit_online(const struct sched_unit *unit)
+{
+ return is_vcpu_online(unit->vcpu_list);
+}
+
+static inline bool unit_runnable(const struct sched_unit *unit)
+{
+ return vcpu_runnable(unit->vcpu_list);
+}
+
+static inline void sched_set_res(struct sched_unit *unit,
+ struct sched_resource *res)
+{
+ unit->vcpu_list->processor = res->processor;
+ unit->res = res;
+}
+
+static inline unsigned int sched_unit_cpu(struct sched_unit *unit)
+{
+ return unit->res->processor;
+}
+
+static inline void sched_set_pause_flags(struct sched_unit *unit,
+ unsigned int bit)
+{
+ __set_bit(bit, &unit->vcpu_list->pause_flags);
+}
+
+static inline void sched_clear_pause_flags(struct sched_unit *unit,
+ unsigned int bit)
+{
+ __clear_bit(bit, &unit->vcpu_list->pause_flags);
+}
+
+static inline void sched_set_pause_flags_atomic(struct sched_unit *unit,
+ unsigned int bit)
+{
+ set_bit(bit, &unit->vcpu_list->pause_flags);
+}
+
+static inline void sched_clear_pause_flags_atomic(struct sched_unit *unit,
+ unsigned int bit)
+{
+ clear_bit(bit, &unit->vcpu_list->pause_flags);
+}
+
+static inline struct sched_unit *sched_idle_unit(unsigned int cpu)
+{
+ return idle_vcpu[cpu]->sched_unit;
+}
+
/*
* Scratch space, for avoiding having too many cpumask_t on the stack.
* Within each scheduler, when using the scratch mask of one pCPU:
@@ -345,10 +401,7 @@ static inline void sched_migrate(const struct scheduler *s,
if ( s->migrate )
s->migrate(s, unit, cpu);
else
- {
- unit->vcpu_list->processor = cpu;
- unit->res = get_sched_res(cpu);
- }
+ sched_set_res(unit, get_sched_res(cpu));
}
static inline struct sched_resource *sched_pick_resource(
--
2.16.4
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next prev parent reply other threads:[~2019-08-09 14:59 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 14:57 [Xen-devel] [PATCH v2 00/48] xen: add core scheduling support Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 01/48] xen/sched: use new sched_unit instead of vcpu in scheduler interfaces Juergen Gross
2019-09-02 9:07 ` Jan Beulich
2019-09-09 5:26 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 02/48] xen/sched: move per-vcpu scheduler private data pointer to sched_unit Juergen Gross
2019-08-23 10:47 ` Dario Faggioli
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 03/48] xen/sched: build a linked list of struct sched_unit Juergen Gross
2019-08-23 10:52 ` Dario Faggioli
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 04/48] xen/sched: introduce struct sched_resource Juergen Gross
2019-08-23 10:54 ` Dario Faggioli
2019-09-04 13:10 ` Jan Beulich
2019-09-09 5:31 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 05/48] xen/sched: let pick_cpu return a scheduler resource Juergen Gross
2019-09-04 13:34 ` Jan Beulich
2019-09-09 5:43 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 06/48] xen/sched: switch schedule_data.curr to point at sched_unit Juergen Gross
2019-09-04 13:36 ` Jan Beulich
2019-09-09 5:46 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 07/48] xen/sched: move per cpu scheduler private data into struct sched_resource Juergen Gross
2019-09-04 13:48 ` Jan Beulich
2019-09-05 7:13 ` Juergen Gross
2019-09-05 7:38 ` Jan Beulich
2019-09-09 13:03 ` Dario Faggioli
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 08/48] xen/sched: switch vcpu_schedule_lock to unit_schedule_lock Juergen Gross
2019-09-04 14:02 ` Jan Beulich
2019-09-04 14:41 ` Juergen Gross
2019-09-04 14:54 ` Jan Beulich
2019-09-04 15:02 ` Juergen Gross
2019-09-11 16:02 ` Dario Faggioli
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 09/48] xen/sched: move some per-vcpu items to struct sched_unit Juergen Gross
2019-09-04 14:16 ` Jan Beulich
2019-09-09 6:39 ` Juergen Gross
2019-09-09 6:55 ` Jan Beulich
2019-09-09 7:05 ` Juergen Gross
2019-08-09 14:57 ` Juergen Gross [this message]
2019-09-04 14:49 ` [Xen-devel] [PATCH v2 10/48] xen/sched: add scheduler helpers hiding vcpu Jan Beulich
2019-09-11 13:22 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 11/48] xen/sched: rename scheduler related perf counters Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 12/48] xen/sched: switch struct task_slice from vcpu to sched_unit Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 13/48] xen/sched: add is_running indicator to struct sched_unit Juergen Gross
2019-09-04 15:06 ` Jan Beulich
2019-09-11 13:44 ` Juergen Gross
2019-09-11 15:06 ` Jan Beulich
2019-09-11 15:32 ` Juergen Gross
2019-08-09 14:57 ` [Xen-devel] [PATCH v2 14/48] xen/sched: make null scheduler vcpu agnostic Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 15/48] xen/sched: make rt " Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 16/48] xen/sched: make credit " Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 17/48] xen/sched: make credit2 " Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 18/48] xen/sched: make arinc653 " Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 19/48] xen: add sched_unit_pause_nosync() and sched_unit_unpause() Juergen Gross
2019-09-09 13:34 ` Jan Beulich
2019-09-11 14:15 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 20/48] xen: let vcpu_create() select processor Juergen Gross
2019-08-23 16:42 ` Julien Grall
2019-09-09 13:38 ` Jan Beulich
2019-09-11 14:22 ` Juergen Gross
2019-09-11 17:20 ` Dario Faggioli
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 21/48] xen/sched: use sched_resource cpu instead smp_processor_id in schedulers Juergen Gross
2019-09-09 14:17 ` Jan Beulich
2019-09-12 9:34 ` Juergen Gross
2019-09-12 10:04 ` Jan Beulich
2019-09-12 11:03 ` Juergen Gross
2019-09-12 11:17 ` Juergen Gross
2019-09-12 11:46 ` Jan Beulich
2019-09-12 11:53 ` Juergen Gross
2019-09-12 12:08 ` Jan Beulich
2019-09-12 12:13 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 22/48] xen/sched: switch schedule() from vcpus to sched_units Juergen Gross
2019-09-09 14:35 ` Jan Beulich
2019-09-12 13:44 ` Juergen Gross
2019-09-12 14:34 ` Jan Beulich
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 23/48] xen/sched: switch sched_move_irqs() to take sched_unit as parameter Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 24/48] xen: switch from for_each_vcpu() to for_each_sched_unit() Juergen Gross
2019-09-09 15:14 ` Jan Beulich
2019-09-12 14:02 ` Juergen Gross
2019-09-12 14:40 ` Jan Beulich
2019-09-12 14:47 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 25/48] xen/sched: add runstate counters to struct sched_unit Juergen Gross
2019-09-09 14:30 ` Jan Beulich
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 26/48] xen/sched: rework and rename vcpu_force_reschedule() Juergen Gross
2019-09-10 14:06 ` Jan Beulich
2019-09-13 9:33 ` Juergen Gross
2019-09-13 9:40 ` Jan Beulich
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 27/48] xen/sched: Change vcpu_migrate_*() to operate on schedule unit Juergen Gross
2019-09-10 15:11 ` Jan Beulich
2019-09-13 12:33 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 28/48] xen/sched: move struct task_slice into struct sched_unit Juergen Gross
2019-09-10 15:18 ` Jan Beulich
2019-09-13 12:56 ` Juergen Gross
2019-09-12 8:13 ` Dario Faggioli
2019-09-12 8:21 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 29/48] xen/sched: add code to sync scheduling of all vcpus of a sched unit Juergen Gross
2019-09-10 15:36 ` Jan Beulich
2019-09-13 13:12 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 30/48] xen/sched: introduce unit_runnable_state() Juergen Gross
2019-09-11 10:30 ` Jan Beulich
2019-09-12 10:22 ` Dario Faggioli
2019-09-13 14:07 ` Juergen Gross
2019-09-13 14:44 ` Jan Beulich
2019-09-13 15:23 ` Juergen Gross
2019-09-12 10:24 ` Dario Faggioli
2019-09-13 14:14 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 31/48] xen/sched: add support for multiple vcpus per sched unit where missing Juergen Gross
2019-09-11 10:43 ` Jan Beulich
2019-09-13 15:01 ` Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 32/48] xen/sched: modify cpupool_domain_cpumask() to be an unit mask Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 33/48] xen/sched: support allocating multiple vcpus into one sched unit Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 34/48] xen/sched: add a percpu resource index Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 35/48] xen/sched: add fall back to idle vcpu when scheduling unit Juergen Gross
2019-09-11 11:33 ` Julien Grall
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 36/48] xen/sched: make vcpu_wake() and vcpu_sleep() core scheduling aware Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 37/48] xen/sched: carve out freeing sched_unit memory into dedicated function Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 38/48] xen/sched: move per-cpu variable scheduler to struct sched_resource Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 39/48] xen/sched: move per-cpu variable cpupool " Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 40/48] xen/sched: reject switching smt on/off with core scheduling active Juergen Gross
2019-09-10 15:47 ` Jan Beulich
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 41/48] xen/sched: prepare per-cpupool scheduling granularity Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 42/48] xen/sched: split schedule_cpu_switch() Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 43/48] xen/sched: protect scheduling resource via rcu Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 44/48] xen/sched: support multiple cpus per scheduling resource Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 45/48] xen/sched: support differing granularity in schedule_cpu_[add/rm]() Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 46/48] xen/sched: support core scheduling for moving cpus to/from cpupools Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 47/48] xen/sched: disable scheduling when entering ACPI deep sleep states Juergen Gross
2019-08-09 14:58 ` [Xen-devel] [PATCH v2 48/48] xen/sched: add scheduling granularity enum Juergen Gross
2019-08-15 10:17 ` [Xen-devel] [PATCH v2 00/48] xen: add core scheduling support Sergey Dyasli
2019-09-05 6:22 ` Juergen Gross
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