R0dn3yS/android_kernel_xiaomi_sm7250
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

trace: sched: add capacity change tracing

Browse Source 
Add a new tracepoint sched_capacity_update when capacity value
updated.

Bug: 144177658
Bug: 144961676
Test: Boot and grab trace to check
Change-Id: I30ee55bfcc2fb5a92dd448ad364768ee428f3cc4
Signed-off-by: Wei Wang <wvw@google.com>
Signed-off-by: Jimmy Shiu <jimmyshiu@google.com>
This commit is contained in:
Wei Wang 2019-11-12 10:33:30 -08:00 committed by spakkkk
parent ca3ca78250
commit ef3ff76413
2 changed files with 34 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
include/trace/events/sched.h
View File

@ -1598,6 +1598,28 @@ TRACE_EVENT_CONDITION(sched_overutilized,
__entry->overutilized ? 1 : 0, __entry->cpulist)
);
TRACE_EVENT(sched_capacity_update,
TP_PROTO(int cpu),
TP_ARGS(cpu),
TP_STRUCT__entry(
__field(unsigned int, cpu)
__field(unsigned int, capacity)
__field(unsigned int, capacity_orig)
),
TP_fast_assign(
__entry->cpu = cpu;
__entry->capacity = capacity_of(cpu);
__entry->capacity_orig = capacity_orig_of(cpu);
),
TP_printk("cpu=%d capacity=%u capacity_orig=%u",
__entry->cpu, __entry->capacity, __entry->capacity_orig)
);
/*
* Tracepoint for sched_get_nr_running_avg
*/

14
kernel/sched/fair.c
View File

@ -9544,19 +9544,29 @@ static void update_cpu_capacity(struct sched_domain *sd, int cpu)
{
unsigned long capacity = arch_scale_cpu_capacity(sd, cpu);
struct sched_group *sdg = sd->groups;
bool update = false;
capacity *= arch_scale_max_freq_capacity(sd, cpu);
capacity >>= SCHED_CAPACITY_SHIFT;
capacity = min(capacity, thermal_cap(cpu));
cpu_rq(cpu)->cpu_capacity_orig = capacity;
if (cpu_rq(cpu)->cpu_capacity_orig != capacity) {
cpu_rq(cpu)->cpu_capacity_orig = capacity;
update = true;
}
capacity = scale_rt_capacity(cpu, capacity);
if (!capacity)
capacity = 1;
cpu_rq(cpu)->cpu_capacity = capacity;
if (cpu_rq(cpu)->cpu_capacity != capacity) {
cpu_rq(cpu)->cpu_capacity = capacity;
update = true;
}
if (update)
trace_sched_capacity_update(cpu);
sdg->sgc->capacity = capacity;
sdg->sgc->min_capacity = capacity;
sdg->sgc->max_capacity = capacity;