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freedreno/perfctrs/fdperf: periodically restore counters

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When GPU is idle and suspends, the currently selected countables
will all reset to the first one.  So periodically restore the selected
countables.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit is contained in:
Rob Clark 2019-11-20 11:56:57 -08:00 • committed by Rob Clark
parent 5a13507164
commit 1a8c49d76c
1 changed files with 31 additions and 1 deletions
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32
src/freedreno/perfcntrs/fdperf.c
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@ -97,6 +97,7 @@ static struct {
static void config_save(void);
static void config_restore(void);
static void restore_counter_groups(void);
/*
* helpers
@ -863,6 +864,7 @@ static void
main_ui(void)
{
WINDOW *mainwin;
uint32_t last_time = gettime_us();
/* curses setup: */
mainwin = initscr();
@ -907,6 +909,16 @@ main_ui(void)
}
resample();
redraw(mainwin);
/* restore the counters every 0.5s in case the GPU has suspended,
* in which case the current selected countables will have reset:
*/
uint32_t t = gettime_us();
if (delta(last_time, t) > 500000) {
restore_counter_groups();
flush_ring();
last_time = t;
}
}
/* restore settings.. maybe we need an atexit()??*/
@ -916,6 +928,23 @@ out:
refresh();
}
static void
restore_counter_groups(void)
{
for (unsigned i = 0; i < dev.ngroups; i++) {
struct counter_group *group = &dev.groups[i];
unsigned j = 0;
/* NOTE skip CP the first CP counter */
if (i == 0)
j++;
for (; j < group->group->num_counters; j++) {
select_counter(group, j, group->counter[j].select_val);
}
}
}
static void
setup_counter_groups(const struct fd_perfcntr_group *groups)
{
@ -939,7 +968,7 @@ setup_counter_groups(const struct fd_perfcntr_group *groups)
group->counter[j].val_hi = dev.io + (group->counter[j].counter->counter_reg_hi * 4);
group->counter[j].val_lo = dev.io + (group->counter[j].counter->counter_reg_lo * 4);
select_counter(group, j, j);
group->counter[j].select_val = j;
}
for (unsigned j = 0; j < group->group->num_countables; j++) {
@ -1049,6 +1078,7 @@ main(int argc, char **argv)
dev.groups = calloc(dev.ngroups, sizeof(struct counter_group));
setup_counter_groups(groups);
restore_counter_groups();
config_restore();
flush_ring();