From e22be687f69d0b5dab119f5e32d75a8cdf9c45ce Mon Sep 17 00:00:00 2001
From: Gabriel Wang <gabriel.wang@arm.com>
Date: Tue, 9 Apr 2024 20:48:59 +0100
Subject: [PATCH] minor update

---
 perf_counter.c | 8 +++++++-
 perf_counter.h | 6 ++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/perf_counter.c b/perf_counter.c
index 5230d04..b74fb0f 100644
--- a/perf_counter.c
+++ b/perf_counter.c
@@ -127,6 +127,11 @@ void perfc_port_insert_to_system_timer_insert_ovf_handler(void)
 
 }
 
+uint32_t perfc_get_systimer_frequency(void)
+{
+    return perfc_port_get_system_timer_freq();
+}
+
 __WEAK
 void __perf_os_patch_init(void)
 {
@@ -157,7 +162,8 @@ bool init_cycle_counter(bool bIsSysTickOccupied)
     s_lSystemClockCounts = 0;                       // reset system cycle counter
     s_lSystemMS = 0;                                // reset system millisecond counter
     s_lSystemUS = 0;                                // reset system microsecond counter
-
+    s_lOldTimestamp = 0;
+    
     __perf_os_patch_init();
     
     return bResult;
diff --git a/perf_counter.h b/perf_counter.h
index a38b843..56e6ab4 100644
--- a/perf_counter.h
+++ b/perf_counter.h
@@ -669,6 +669,12 @@ int64_t stop_cycle_counter(void)
  * @{
  */
 
+/*!
+ * \brief get the system timer frequency
+ * \return uint32_t the system timer frequency in Hz
+ */
+extern uint32_t perfc_get_systimer_frequency(void);
+
 /*!
  * \brief get the elapsed milliseconds since perf_counter is initialised
  * \return int64_t the elapsed milliseconds