Function timestamps_module_init

payloads/coreinfo/timestamps_module.c:132–218

}

static int timestamps_module_init(void)
{
	/* Make sure that lib_sysinfo is initialized */
	int ret = lib_get_sysinfo();

	if (ret)
		return -1;

	struct timestamp_table *timestamps = phys_to_virt(lib_sysinfo.tstamp_table);

	if (timestamps == NULL)
		return -1;

	/* Extract timestamps information */
	u64 base_time = timestamps->base_time;
	u16 max_entries = timestamps->max_entries;
	u32 n_entries = timestamps->num_entries;

	timestamp_set_tick_freq(timestamps->tick_freq_mhz);

	char *buffer;
	u32 buff_cur = 0;
	uint64_t prev_stamp;
	uint64_t total_time;

	/* Allocate a buffer big enough to contain all of the possible
	 * entries plus the other information (number entries, total time). */
	buffer = malloc((max_entries + 4) * SCREEN_X * sizeof(char));

	if (buffer == NULL)
		return -3;

	/* Write the content */
	buff_cur += snprintf(buffer, SCREEN_X, "%d entries total:\n\n",
			n_entries);

	prev_stamp = 0;
	timestamp_print_entry(buffer, SCREEN_X, &buff_cur, 0, base_time,
			prev_stamp);
	prev_stamp = base_time;

	total_time = 0;
	for (u32 i = 0; i < n_entries; i++) {
		uint64_t stamp;
		const struct timestamp_entry *tse = &timestamps->entries[i];

		stamp = tse->entry_stamp + base_time;
		total_time += timestamp_print_entry(buffer, SCREEN_X,
				&buff_cur, tse->entry_id, stamp, prev_stamp);
		prev_stamp = stamp;
	}

	buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "\nTotal Time: ");
	buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "%llu", total_time);
	buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "\n");

	/* Calculate how many characters will be displayed on screen */
	u32 chars_count = calculate_chars_count(buffer, buff_cur + 1,