[PATCH v7 3/3] binder: add transaction latency tracer

[peter enderborg]

On 8/4/20 3:59 PM, Frankie Chang wrote:
> +void probe_binder_txn_latency_free(void *ignore, struct binder_transaction *t,
> +					int from_proc, int from_thread,
> +					int to_proc, int to_thread)
> +{
> +	struct rtc_time tm;
> +	struct timespec64 *startime;
> +	struct timespec64 cur, sub_t;
> +
> +	ktime_get_ts64(&cur);


I think sched_clock is what you want.


> +	startime = &t->timestamp;
> +	sub_t = timespec64_sub(cur, *startime);
> +
> +	/* if transaction time is over than binder_txn_latency_threshold (sec),
> +	 * show timeout warning log.
> +	 */
> +	if (sub_t.tv_sec < binder_txn_latency_threshold)
> +		return;
> +
> +	rtc_time_to_tm(t->tv.tv_sec, &tm);