eal: optimize TSC routines when HPET is disabled

[dpdk.git] / lib / librte_eal / common / include / generic / rte_cycles.h

diff --git a/lib/librte_eal/common/include/generic/rte_cycles.h b/lib/librte_eal/common/include/generic/rte_cycles.h
index 96a2da9..0e645c2 100644 (file)
--- a/lib/librte_eal/common/include/generic/rte_cycles.h
+++ b/lib/librte_eal/common/include/generic/rte_cycles.h
@@ -150,15 +150,17 @@ int rte_eal_hpet_init(int make_default);
 static inline uint64_t
 rte_get_timer_cycles(void)
 {
+#ifdef RTE_LIBEAL_USE_HPET
        switch(eal_timer_source) {
        case EAL_TIMER_TSC:
+#endif
                return rte_get_tsc_cycles();
-       case EAL_TIMER_HPET:
 #ifdef RTE_LIBEAL_USE_HPET
+       case EAL_TIMER_HPET:
                return rte_get_hpet_cycles();
-#endif
        default: rte_panic("Invalid timer source specified\n");
        }
+#endif
 }
 
 /**
@@ -170,15 +172,17 @@ rte_get_timer_cycles(void)
 static inline uint64_t
 rte_get_timer_hz(void)
 {
+#ifdef RTE_LIBEAL_USE_HPET
        switch(eal_timer_source) {
        case EAL_TIMER_TSC:
+#endif
                return rte_get_tsc_hz();
-       case EAL_TIMER_HPET:
 #ifdef RTE_LIBEAL_USE_HPET
+       case EAL_TIMER_HPET:
                return rte_get_hpet_hz();
-#endif
        default: rte_panic("Invalid timer source specified\n");
        }
+#endif
 }
 /**
  * Wait at least us microseconds.
@@ -188,7 +192,7 @@ rte_get_timer_hz(void)
  * @param us
  *   The number of microseconds to wait.
  */
-void
+extern void
 (*rte_delay_us)(unsigned int us);
 
 /**