mod-dnstap: CLOCK_REALTIME_COARSE instead of *_REALTIME if possible

diff --git a/src/knot/modules/dnstap/dnstap.c b/src/knot/modules/dnstap/dnstap.c
index 204804fce6c51e7a568e3242deeb4dff44de7357..f5c4663785a2456f30b37f66e6d375e6a6c35363 100644 (file)
--- a/src/knot/modules/dnstap/dnstap.c
+++ b/src/knot/modules/dnstap/dnstap.c
@@ -13,6 +13,10 @@
 #include "contrib/time.h"
 #include "knot/include/module.h"
 
+#ifndef CLOCK_REALTIME_COARSE
+#define CLOCK_REALTIME_COARSE CLOCK_REALTIME
+#endif
+
 #define MOD_SINK               "\x04""sink"
 #define MOD_IDENTITY           "\x08""identity"
 #define MOD_VERSION            "\x07""version"
@@ -77,7 +81,7 @@ static knotd_state_t log_message(knotd_state_t state, const knot_pkt_t *pkt,
        /* Unless we want to measure the time it takes to process each query,
         * we can treat Q/R times the same. */
        struct timespec tv = { 0 };
-       clock_gettime(CLOCK_REALTIME, &tv);
+       clock_gettime(CLOCK_REALTIME_COARSE, &tv);
 
        /* Determine query / response. */
        Dnstap__Message__Type msgtype = DNSTAP__MESSAGE__TYPE__AUTH_QUERY;