evie/android_kernel_oneplus_msm8998
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msm: sde: Adding SW overhead statistic for SDE rotator

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Enabling SW overhead statistic collection for SDE rotator. SW overhead
is defined as time between buffer queueing and HW flush.

CRs-Fixed: 1054205
Change-Id: I7f09dafa8c2d0f1940c76913ae842835059122f4
Signed-off-by: Benjamin Chan <bkchan@codeaurora.org>
This commit is contained in:
Benjamin Chan 2016-08-10 16:10:59 -04:00 • committed by Gerrit - the friendly Code Review server
parent c5984ec85c
commit b23d3854bc
2 changed files with 19 additions and 3 deletions
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20
drivers/media/platform/msm/sde/rotator/sde_rotator_debug.c
View file

@ -35,10 +35,14 @@ static int sde_rotator_stat_show(struct seq_file *s, void *data)
u64 count = stats->count;
int num_events;
s64 proc_max, proc_min, proc_avg;
s64 swoh_max, swoh_min, swoh_avg;
proc_max = 0;
proc_min = S64_MAX;
proc_avg = 0;
swoh_max = 0;
swoh_min = S64_MAX;
swoh_avg = 0;
if (count > SDE_ROTATOR_NUM_EVENTS) {
num_events = SDE_ROTATOR_NUM_EVENTS;
@ -59,9 +63,12 @@ static int sde_rotator_stat_show(struct seq_file *s, void *data)
s64 proc_time =
ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_RETIRE],
start_time));
s64 sw_overhead_time =
ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FLUSH],
start_time));
seq_printf(s,
"s:%d sq:%lld dq:%lld fe:%lld q:%lld c:%lld fl:%lld d:%lld sdq:%lld ddq:%lld t:%lld\n",
"s:%d sq:%lld dq:%lld fe:%lld q:%lld c:%lld fl:%lld d:%lld sdq:%lld ddq:%lld t:%lld oht:%lld\n",
i,
ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FENCE],
ts[SDE_ROTATOR_TS_SRCQB])),
@ -81,21 +88,30 @@ static int sde_rotator_stat_show(struct seq_file *s, void *data)
ts[SDE_ROTATOR_TS_RETIRE])),
ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_DSTDQB],
ts[SDE_ROTATOR_TS_RETIRE])),
proc_time);
proc_time, sw_overhead_time);
proc_max = max(proc_max, proc_time);
proc_min = min(proc_min, proc_time);
proc_avg += proc_time;
swoh_max = max(swoh_max, sw_overhead_time);
swoh_min = min(swoh_min, sw_overhead_time);
swoh_avg += sw_overhead_time;
}
proc_avg = (num_events) ?
DIV_ROUND_CLOSEST_ULL(proc_avg, num_events) : 0;
swoh_avg = (num_events) ?
DIV_ROUND_CLOSEST_ULL(swoh_avg, num_events) : 0;
seq_printf(s, "count:%llu\n", count);
seq_printf(s, "fai1:%llu\n", stats->fail_count);
seq_printf(s, "t_max:%lld\n", proc_max);
seq_printf(s, "t_min:%lld\n", proc_min);
seq_printf(s, "t_avg:%lld\n", proc_avg);
seq_printf(s, "swoh_max:%lld\n", swoh_max);
seq_printf(s, "swoh_min:%lld\n", swoh_min);
seq_printf(s, "swoh_avg:%lld\n", swoh_avg);
return 0;
}

2
drivers/media/platform/msm/sde/rotator/sde_rotator_dev.h
View file

@ -33,7 +33,7 @@
#define SDE_ROTATOR_DRV_NAME "sde_rotator"
/* Event logging constants */
#define SDE_ROTATOR_NUM_EVENTS 256
#define SDE_ROTATOR_NUM_EVENTS 4096
#define SDE_ROTATOR_NUM_TIMESTAMPS SDE_ROTATOR_TS_MAX
struct sde_rotator_device;