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greybus: loopback: update throughput metrics to improve granularity

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Throughput capture should account for the entire size of the data going out
on the wire. In addition throughput should be captured for each supported
loopback operation.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Bryan O'Donoghue 2015-07-13 20:20:51 +01:00 committed by Greg Kroah-Hartman
parent c3bba87a7a
commit f7908e4d6d
1 changed files with 20 additions and 5 deletions
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25
drivers/staging/greybus/loopback.c
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@ -340,10 +340,26 @@ static void gb_loopback_freq_update(struct gb_loopback *gb)
gb_loopback_update_stats(&gb->frequency, gb->elapsed_nsecs);
}
static void gb_loopback_bw_update(struct gb_loopback *gb, int error)
static void gb_loopback_throughput_update(struct gb_loopback *gb)
{
if (!error)
gb->throughput.sum += gb->size * 2;
u32 aggregate_size = sizeof(struct gb_operation_msg_hdr) * 2;
switch (gb->type) {
case GB_LOOPBACK_TYPE_PING:
break;
case GB_LOOPBACK_TYPE_SINK:
aggregate_size += sizeof(struct gb_loopback_transfer_request) +
gb->size;
break;
case GB_LOOPBACK_TYPE_TRANSFER:
aggregate_size += sizeof(struct gb_loopback_transfer_request) +
sizeof(struct gb_loopback_transfer_response) +
gb->size * 2;
break;
default:
return;
}
gb->throughput.sum += aggregate_size;
gb_loopback_update_stats(&gb->throughput, gb->elapsed_nsecs);
}
@ -393,8 +409,7 @@ static int gb_loopback_fn(void *data)
gb->elapsed_nsecs = timeval_to_ns(&gb->te) -
timeval_to_ns(&gb->ts);
gb_loopback_freq_update(gb);
if (gb->type == GB_LOOPBACK_TYPE_PING)
gb_loopback_bw_update(gb, error);
gb_loopback_throughput_update(gb);
gb_loopback_latency_update(gb, &tlat);
if (gb->elapsed_nsecs >= NSEC_PER_SEC)
gb->ts = gb->te;