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app/test: remove useless clock estimation

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The function get_machclk_freq() in RED test can be replaced by
rte_get_timer_hz() which already estimates the clock frequency at EAL init.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
This commit is contained in:
Thomas Monjalon 2016-07-06 16:58:39 +02:00
parent d05aafe62f
commit c7cda4d8b4
1 changed files with 1 additions and 41 deletions
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42
app/test/test_red.c
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@ -273,46 +273,6 @@ static int check_avg(double *diff, double avg, double exp_avg, double tolerance)
return ret;
}
/**
* get the clk frequency in Hz
*/
static uint64_t get_machclk_freq(void)
{
uint64_t start = 0;
uint64_t end = 0;
uint64_t diff = 0;
static uint64_t clk_freq_hz;
struct timespec tv_start = {0, 0}, tv_end = {0, 0};
struct timespec req = {0, 0};
if (clk_freq_hz != 0)
return clk_freq_hz;
req.tv_sec = 0;
req.tv_nsec = NSEC_PER_SEC / 4;
clock_gettime(CLOCK_REALTIME, &tv_start);
start = rte_rdtsc();
if (nanosleep(&req, NULL) != 0) {
perror("get_machclk_freq()");
exit(EXIT_FAILURE);
}
clock_gettime(CLOCK_REALTIME, &tv_end);
end = rte_rdtsc();
diff = (uint64_t)(tv_end.tv_sec - tv_start.tv_sec) * USEC_PER_SEC
+ ((tv_end.tv_nsec - tv_start.tv_nsec + TEST_NSEC_MARGIN) /
USEC_PER_MSEC); /**< diff is in micro secs */
if (diff == 0)
return 0;
clk_freq_hz = ((end - start) * USEC_PER_SEC / diff);
return clk_freq_hz;
}
/**
* initialize the test rte_red config
*/
@ -321,7 +281,7 @@ test_rte_red_init(struct test_config *tcfg)
{
unsigned i = 0;
tcfg->tvar->clk_freq = get_machclk_freq();
tcfg->tvar->clk_freq = rte_get_timer_hz();
init_port_ts( tcfg->tvar->clk_freq );
for (i = 0; i < tcfg->tconfig->num_cfg; i++) {