app/test: remove useless clock estimation

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>

diff --git a/app/test/test_red.c b/app/test/test_red.c
index 2384c55..7d1c32c 100644 (file)
--- a/app/test/test_red.c
+++ b/app/test/test_red.c
@@ -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++) {