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ARM: fix performance counters allocation

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Change-Id: Ie6c8beacf268462064f59b063d9c7b635c906dc4
This commit is contained in:
Balazs Gerofi
2019-06-05 14:00:12 +09:00
parent 99fba2df1c
commit bc4629dfb0
7 changed files with 49 additions and 22 deletions
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24
kernel/syscall.c
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@ -3689,24 +3689,6 @@ SYSCALL_DECLARE(signalfd4)
}
#ifdef ENABLE_PERF
int
perf_counter_alloc(struct thread *thread)
{
int ret = -EINVAL;
int i = 0;
const int counters = ihk_mc_perf_get_num_counters();
// find avail generic counter
for (i = 0; i < counters; i++) {
if(!(thread->pmc_alloc_map & (1 << i))) {
ret = i;
break;
}
}
return ret;
}
int perf_counter_set(struct mc_perf_event *event)
{
int ret = 0;
@ -4102,7 +4084,7 @@ static int mc_perf_event_alloc(struct mc_perf_event **out,
event->child_count_total = 0;
event->parent = NULL;
switch(attr->type) {
switch (attr->type) {
case PERF_TYPE_HARDWARE :
val = ihk_mc_hw_event_map(attr->config);
break;
@ -4204,7 +4186,9 @@ SYSCALL_DECLARE(perf_event_open)
event->pid = pid;
counter_idx = perf_counter_alloc(thread);
counter_idx = ihk_mc_perfctr_alloc(thread,
(attr->type == PERF_TYPE_HARDWARE &&
attr->config == PERF_COUNT_HW_CPU_CYCLES));
if (counter_idx < 0) {
return counter_idx;
}