Displaying 8 results from an estimated 8 matches for "csched_vcpu".
2013 Mar 08
2
[PATCH v2 1/2] credit2: Fix erronous ASSERT
...1 file changed, 17 insertions(+), 24 deletions(-)
diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c
index a7bd2ee..03814b7 100644
--- a/xen/common/sched_credit2.c
+++ b/xen/common/sched_credit2.c
@@ -1544,31 +1544,24 @@ csched_runtime(const struct scheduler *ops, int cpu, struct csched_vcpu *snext)
}
}
- /*
- * snext is about to be scheduled; so:
- *
- * 1. if snext->credit were less than 0 when it was taken off the
- * runqueue, then csched_schedule() should have called
- * reset_credit(). So at this point snext->credit must be greater
-...
2010 Oct 26
3
[PATCH 0 of 3] credit2 updates
Address some credit2 issues. This patch series, along with the recent
changes to the cpupools interface, should address some of the strange
credit2 instability.
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2013 Dec 14
0
[PATCH v2] xen: sched: introduce hard and soft affinity in credit 2 scheduler
...SCHED_MIN_CREDIT_PREFER_SA MILLISECS(5)
/* Carryover: How much "extra" credit may be carried over after
* a reset. */
#define CSCHED_CARRYOVER_MAX CSCHED_MIN_TIMER
@@ -1615,6 +1619,7 @@ runq_candidate(struct csched_runqueue_data *rqd,
{
struct list_head *iter;
struct csched_vcpu *snext = NULL;
+ bool_t found_snext_w_hard_affinity = 0;
/* Default to current if runnable, idle otherwise */
if ( vcpu_runnable(scurr->vcpu) )
@@ -1626,6 +1631,11 @@ runq_candidate(struct csched_runqueue_data *rqd,
{
struct csched_vcpu * svc = list_entry(iter, struc...
2010 Aug 09
2
[PATCH 0 of 2] Scheduler: Implement yield for credit scheduler
As discussed in a previous e-mail, this patch series implements yield
for the credit scheduler. This allows a VM to actually yield (give up
the cpu to another VM) when it wants to. This has been shown to be
effective when used in the spinlock code to avoid wasting time
spinning when another vcpu is not currently scheduled.
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2011 Sep 01
4
[PATCH] xen,credit1: Add variable timeslice
...17,7 +1116,7 @@ csched_acct(void* dummy)
}
/* Upper bound on credits means VCPU stops earning */
- if ( credit > CSCHED_CREDITS_PER_TSLICE )
+ if ( credit > prv->credits_per_tslice )
{
__csched_vcpu_acct_stop_locked(prv, svc);
/* Divide credits in half, so that when it starts
@@ -1141,8 +1140,8 @@ csched_acct(void* dummy)
prv->runq_sort++;
out:
- set_timer( &prv->master_ticker, NOW() +
- MILLISECS(CSCHED_MSECS_PER_TICK) * CSCHED_TICKS_PER_AC...
2012 Dec 03
17
[PATCH 0 of 3] xen: sched_credit: fix tickling and add some tracing
Hello,
This small series deals with some weirdness in the mechanism with which the
credit scheduler choses what PCPU to tickle upon a VCPU wake-up. Details are
available in the changelog of the first patch.
The new approach has been extensively benchmarked and proved itself either
beneficial or harmless. That means it does not introduce any significant amount
of overhead and/or performances
2013 Sep 17
1
[PATCH v2] xen: sched_credit: filter node-affinity mask against online cpus
...|| !cpumask_intersects(CSCHED_DOM(vc->domain)->node_affinity_cpumask,
+ mask) )
+ return 0;
+
+ return 1;
+}
/*
* Each csched-balance step uses its own cpumask. This function determines
@@ -393,7 +403,8 @@ __runq_tickle(unsigned int cpu, struct csched_vcpu *new)
int new_idlers_empty;
if ( balance_step == CSCHED_BALANCE_NODE_AFFINITY
- && !__vcpu_has_node_affinity(new->vcpu) )
+ && !__vcpu_has_node_affinity(new->vcpu,
+ new-&g...
2011 Dec 06
57
[PATCH RFC 00/25] xen: ARMv7 with virtualization extensions
Hello everyone,
this is the very first version of the patch series that introduces ARMv7
with virtualization extensions support in Xen.
The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile
Express simulator.
See the following announce email for more informations about what we
are trying to achieve, as well as the original git history:
See