From 56b27c4b36c676cc42ae1644e7487fbc902bf6a5 Mon Sep 17 00:00:00 2001 From: Thinh Tran Date: Tue, 24 Mar 2020 20:13:56 -0400 Subject: [PATCH] eal/ppc64: use glibc for cpu cycles count MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit __ppc_get_timebase() reads and returns the current value of the Time Base Register. It's more efficient as it uses the processor’s time base facility directly. DPDK on FreeBSD currently is not supported on Powerpc64, it should be safe to include the sys/platform/ppc.h. Signed-off-by: Thinh Tran Reviewed-by: David Christensen --- lib/librte_eal/ppc/include/rte_cycles.h | 29 +++---------------------- 1 file changed, 3 insertions(+), 26 deletions(-) diff --git a/lib/librte_eal/ppc/include/rte_cycles.h b/lib/librte_eal/ppc/include/rte_cycles.h index 8f2e98642b..5585f9273c 100644 --- a/lib/librte_eal/ppc/include/rte_cycles.h +++ b/lib/librte_eal/ppc/include/rte_cycles.h @@ -10,6 +10,8 @@ extern "C" { #endif +#include + #include "generic/rte_cycles.h" #include @@ -24,32 +26,7 @@ extern "C" { static inline uint64_t rte_rdtsc(void) { - union { - uint64_t tsc_64; - RTE_STD_C11 - struct { -#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN - uint32_t hi_32; - uint32_t lo_32; -#else - uint32_t lo_32; - uint32_t hi_32; -#endif - }; - } tsc; - uint32_t tmp; - - asm volatile( - "0:\n" - "mftbu %[hi32]\n" - "mftb %[lo32]\n" - "mftbu %[tmp]\n" - "cmpw %[tmp],%[hi32]\n" - "bne 0b\n" - : [hi32] "=r"(tsc.hi_32), [lo32] "=r"(tsc.lo_32), - [tmp] "=r"(tmp) - ); - return tsc.tsc_64; + return __ppc_get_timebase(); } static inline uint64_t -- 2.20.1