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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 15/19] xen: credit2: only marshall trace point arguments if tracing enabled
Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
---
Cc: George Dunlap <george.dunlap@xxxxxxxxxx>
Cc: Anshul Makkar <anshul.makkar@xxxxxxxxxx>
Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
---
xen/common/sched_credit2.c | 114 +++++++++++++++++++++++---------------------
1 file changed, 59 insertions(+), 55 deletions(-)
diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c
index e9f3f13..3fdc91c 100644
--- a/xen/common/sched_credit2.c
+++ b/xen/common/sched_credit2.c
@@ -636,6 +636,7 @@ __update_runq_load(const struct scheduler *ops,
ASSERT(rqd->avgload <= STIME_MAX && rqd->b_avgload <= STIME_MAX);
+ if ( unlikely(tb_init_done) )
{
struct {
uint64_t rq_avgload, b_avgload;
@@ -646,9 +647,9 @@ __update_runq_load(const struct scheduler *ops,
d.rq_avgload = rqd->avgload;
d.b_avgload = rqd->b_avgload;
d.shift = P;
- trace_var(TRC_CSCHED2_UPDATE_RUNQ_LOAD, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_UPDATE_RUNQ_LOAD, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -691,6 +692,7 @@ __update_svc_load(const struct scheduler *ops,
}
svc->load_last_update = now;
+ if ( unlikely(tb_init_done) )
{
struct {
uint64_t v_avgload;
@@ -701,9 +703,9 @@ __update_svc_load(const struct scheduler *ops,
d.vcpu = svc->vcpu->vcpu_id;
d.v_avgload = svc->avgload;
d.shift = P;
- trace_var(TRC_CSCHED2_UPDATE_VCPU_LOAD, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_UPDATE_VCPU_LOAD, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -759,6 +761,7 @@ runq_insert(const struct scheduler *ops, struct
csched2_vcpu *svc)
pos = __runq_insert(runq, svc);
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned vcpu:16, dom:16;
@@ -767,9 +770,9 @@ runq_insert(const struct scheduler *ops, struct
csched2_vcpu *svc)
d.dom = svc->vcpu->domain->domain_id;
d.vcpu = svc->vcpu->vcpu_id;
d.pos = pos;
- trace_var(TRC_CSCHED2_RUNQ_POS, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_RUNQ_POS, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
return;
@@ -812,7 +815,7 @@ runq_tickle(const struct scheduler *ops, struct
csched2_vcpu *new, s_time_t now)
ASSERT(new->rqd == rqd);
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned vcpu:16, dom:16;
@@ -822,9 +825,9 @@ runq_tickle(const struct scheduler *ops, struct
csched2_vcpu *new, s_time_t now)
d.vcpu = new->vcpu->vcpu_id;
d.processor = new->vcpu->processor;
d.credit = new->credit;
- trace_var(TRC_CSCHED2_TICKLE_NEW, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_TICKLE_NEW, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
/*
@@ -882,7 +885,8 @@ runq_tickle(const struct scheduler *ops, struct
csched2_vcpu *new, s_time_t now)
lowest = cur->credit;
}
- /* TRACE */ {
+ if ( unlikely(tb_init_done) )
+ {
struct {
unsigned vcpu:16, dom:16;
unsigned credit;
@@ -890,9 +894,9 @@ runq_tickle(const struct scheduler *ops, struct
csched2_vcpu *new, s_time_t now)
d.dom = cur->vcpu->domain->domain_id;
d.vcpu = cur->vcpu->vcpu_id;
d.credit = cur->credit;
- trace_var(TRC_CSCHED2_TICKLE_CHECK, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_TICKLE_CHECK, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -910,14 +914,15 @@ runq_tickle(const struct scheduler *ops, struct
csched2_vcpu *new, s_time_t now)
tickle:
BUG_ON(ipid == -1);
- /* TRACE */ {
+ if ( unlikely(tb_init_done) )
+ {
struct {
unsigned cpu:16, pad:16;
} d;
d.cpu = ipid; d.pad = 0;
- trace_var(TRC_CSCHED2_TICKLE, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_TICKLE, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
__cpumask_set_cpu(ipid, &rqd->tickled);
cpu_raise_softirq(ipid, SCHEDULE_SOFTIRQ);
@@ -979,7 +984,8 @@ static void reset_credit(const struct scheduler *ops, int
cpu, s_time_t now,
svc->start_time = now;
- /* TRACE */ {
+ if ( unlikely(tb_init_done) )
+ {
struct {
unsigned vcpu:16, dom:16;
unsigned credit_start, credit_end;
@@ -990,9 +996,9 @@ static void reset_credit(const struct scheduler *ops, int
cpu, s_time_t now,
d.credit_start = start_credit;
d.credit_end = svc->credit;
d.multiplier = m;
- trace_var(TRC_CSCHED2_CREDIT_RESET, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_CREDIT_RESET, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -1028,7 +1034,7 @@ void burn_credits(struct csched2_runqueue_data *rqd,
__func__, now, svc->start_time);
}
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned vcpu:16, dom:16;
@@ -1039,9 +1045,9 @@ void burn_credits(struct csched2_runqueue_data *rqd,
d.vcpu = svc->vcpu->vcpu_id;
d.credit = svc->credit;
d.delta = delta;
- trace_var(TRC_CSCHED2_CREDIT_BURN, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_CREDIT_BURN, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -1077,16 +1083,16 @@ static void update_max_weight(struct
csched2_runqueue_data *rqd, int new_weight,
SCHED_STAT_CRANK(upd_max_weight_full);
}
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned rqi:16, max_weight:16;
} d;
d.rqi = rqd->id;
d.max_weight = rqd->max_weight;
- trace_var(TRC_CSCHED2_RUNQ_MAX_WEIGHT, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_RUNQ_MAX_WEIGHT, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -1166,7 +1172,7 @@ __runq_assign(struct csched2_vcpu *svc, struct
csched2_runqueue_data *rqd)
/* Expected new load based on adding this vcpu */
rqd->b_avgload += svc->avgload;
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned vcpu:16, dom:16;
@@ -1175,9 +1181,9 @@ __runq_assign(struct csched2_vcpu *svc, struct
csched2_runqueue_data *rqd)
d.dom = svc->vcpu->domain->domain_id;
d.vcpu = svc->vcpu->vcpu_id;
d.rqi=rqd->id;
- trace_var(TRC_CSCHED2_RUNQ_ASSIGN, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_RUNQ_ASSIGN, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
}
@@ -1489,7 +1495,7 @@ csched2_cpu_pick(const struct scheduler *ops, struct vcpu
*vc)
out_up:
spin_unlock(&prv->lock);
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
uint64_t b_avgload;
@@ -1501,9 +1507,9 @@ out_up:
d.vcpu = vc->vcpu_id;
d.rq_id = c2r(ops, new_cpu);
d.new_cpu = new_cpu;
- trace_var(TRC_CSCHED2_PICKED_CPU, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_PICKED_CPU, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
return new_cpu;
@@ -1561,7 +1567,7 @@ static void migrate(const struct scheduler *ops,
bool_t running = svc->flags & CSFLAG_scheduled;
bool_t on_runq = __vcpu_on_runq(svc);
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned vcpu:16, dom:16;
@@ -1571,9 +1577,9 @@ static void migrate(const struct scheduler *ops,
d.vcpu = svc->vcpu->vcpu_id;
d.rqi = svc->rqd->id;
d.trqi = trqd->id;
- trace_var(TRC_CSCHED2_MIGRATE, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_MIGRATE, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
if ( running )
@@ -1696,10 +1702,8 @@ static void balance_load(const struct scheduler *ops,
int cpu, s_time_t now)
cpus_max = cpumask_weight(&st.lrqd->active);
i = cpumask_weight(&st.orqd->active);
- if ( i > cpus_max )
- cpus_max = i;
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
unsigned lrq_id:16, orq_id:16;
@@ -1708,9 +1712,9 @@ static void balance_load(const struct scheduler *ops, int
cpu, s_time_t now)
d.lrq_id = st.lrqd->id;
d.orq_id = st.orqd->id;
d.load_delta = st.load_delta;
- trace_var(TRC_CSCHED2_LOAD_CHECK, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_LOAD_CHECK, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
/*
@@ -1741,7 +1745,7 @@ static void balance_load(const struct scheduler *ops, int
cpu, s_time_t now)
if ( unlikely(st.orqd->id < 0) )
goto out_up;
- /* TRACE */
+ if ( unlikely(tb_init_done) )
{
struct {
uint64_t lb_avgload, ob_avgload;
@@ -1751,9 +1755,9 @@ static void balance_load(const struct scheduler *ops, int
cpu, s_time_t now)
d.lb_avgload = st.lrqd->b_avgload;
d.orq_id = st.orqd->id;
d.ob_avgload = st.orqd->b_avgload;
- trace_var(TRC_CSCHED2_LOAD_BALANCE, 1,
- sizeof(d),
- (unsigned char *)&d);
+ __trace_var(TRC_CSCHED2_LOAD_BALANCE, 1,
+ sizeof(d),
+ (unsigned char *)&d);
}
now = NOW();
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