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sched/fair: Move load idx selection in find_idlest_group 

load_idx is used in find_idlest_group but initialized in select_task_rq_fair
even when not used. The load_idx initialisation is moved in find_idlest_group
and the sd_flag replaces it in the function's args.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Cc: len.brown@intel.com
Cc: amit.kucheria@linaro.org
Cc: pjt@google.com
Cc: l.majewski@samsung.com
Cc: Morten.Rasmussen@arm.com
Cc: cmetcalf@tilera.com
Cc: tony.luck@intel.com
Cc: alex.shi@intel.com
Cc: preeti@linux.vnet.ibm.com
Cc: linaro-kernel@lists.linaro.org
Cc: rjw@sisk.pl
Cc: paulmck@linux.vnet.ibm.com
Cc: corbet@lwn.net
Cc: arjan@linux.intel.com
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1382097147-30088-8-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Vincent Guittot 2013-10-18 13:52:21 +02:00 committed by Ingo Molnar
parent 192301e70a
commit c44f2a0200
1 changed files with 6 additions and 6 deletions
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12
kernel/sched/fair.c
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@ -4110,12 +4110,16 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
*/
static struct sched_group *
find_idlest_group(struct sched_domain *sd, struct task_struct *p,
int this_cpu, int load_idx)
int this_cpu, int sd_flag)
{
struct sched_group *idlest = NULL, *group = sd->groups;
unsigned long min_load = ULONG_MAX, this_load = 0;
int load_idx = sd->forkexec_idx;
int imbalance = 100 + (sd->imbalance_pct-100)/2;
if (sd_flag & SD_BALANCE_WAKE)
load_idx = sd->wake_idx;
do {
unsigned long load, avg_load;
int local_group;
@ -4283,7 +4287,6 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
}
while (sd) {
int load_idx = sd->forkexec_idx;
struct sched_group *group;
int weight;
@ -4292,10 +4295,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
continue;
}
if (sd_flag & SD_BALANCE_WAKE)
load_idx = sd->wake_idx;
group = find_idlest_group(sd, p, cpu, load_idx);
group = find_idlest_group(sd, p, cpu, sd_flag);
if (!group) {
sd = sd->child;
continue;