linux-gen: time: implement strict time stamp read functions

Implemented strict versions of local and global time stamp read
functions. Moved time register read code into inline functions
on ARMv8.

Signed-off-by: Petri Savolainen <petri.savolainen@nokia.com>
Reviewed-by: Matias Elo <matias.elo@nokia.com>
Reviewed-by: Jere Leppänen <jere.leppanen@nokia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/platform/linux-generic/arch/x86/odp/api/abi/cpu_time.h b/platform/linux-generic/arch/x86/odp/api/abi/cpu_time.h
index 05ff0db94..c74c4d606 100644
--- a/platform/linux-generic/arch/x86/odp/api/abi/cpu_time.h
+++ b/platform/linux-generic/arch/x86/odp/api/abi/cpu_time.h
@@ -19,6 +19,12 @@ static inline uint64_t _odp_cpu_global_time(void)
 	return _odp_cpu_rdtsc();
 }
 
+static inline uint64_t _odp_cpu_global_time_strict(void)
+{
+	__atomic_thread_fence(__ATOMIC_SEQ_CST);
+	return _odp_cpu_rdtsc();
+}
+
 int _odp_cpu_has_global_time(void);
 uint64_t _odp_cpu_global_time_freq(void);