nuttx/sched: Replace irqsave() with enter_critical_section(); replace irqrestore() with leave_critical_section()

sched/clock/clock_initialize.c

@@ -46,7 +46,7 @@
 #include <debug.h>
 
 #ifdef CONFIG_RTC
-#  include <arch/irq.h>
+#  include <nuttx/irq.h>
 #endif
 
 #include <nuttx/arch.h>
@@ -256,9 +256,9 @@ void clock_synchronize(void)
 
   /* Re-initialize the time value to match the RTC */
 
-  flags = irqsave();
+  flags = enter_critical_section();
   clock_inittime();
-  irqrestore(flags);
+  leave_critical_section(flags);
 }
 #endif
 

sched/clock/clock_settime.c

@@ -45,7 +45,7 @@
 #include <debug.h>
 
 #include <nuttx/arch.h>
-#include <arch/irq.h>
+#include <nuttx/irq.h>
 
 #include "clock/clock.h"
 
@@ -109,7 +109,7 @@ int clock_settime(clockid_t clock_id, FAR const struct timespec *tp)
        * possible.
        */
 
-      flags = irqsave();
+      flags = enter_critical_section();
 
       /* Get the elapsed time since power up (in milliseconds).  This is a
        * bias value that we need to use to correct the base time.
@@ -146,7 +146,7 @@ int clock_settime(clockid_t clock_id, FAR const struct timespec *tp)
           up_rtc_settime(tp);
         }
 #endif
-      irqrestore(flags);
+      leave_critical_section(flags);
 
       sdbg("basetime=(%ld,%lu) bias=(%ld,%lu)\n",
           (long)g_basetime.tv_sec, (unsigned long)g_basetime.tv_nsec,

sched/clock/clock_systimer.c

@@ -41,6 +41,7 @@
 
 #include <stdint.h>
 
+#include <nuttx/irq.h>
 #include <nuttx/arch.h>
 #include <nuttx/clock.h>
 
@@ -53,10 +54,6 @@
 
 #undef clock_systimer
 
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -115,9 +112,9 @@ systime_t clock_systimer(void)
 
   /* 64-bit accesses are not atomic on most architectures. */
 
-  flags  = irqsave();
+  flags  = enter_critical_section();
   sample = g_system_timer;
-  irqrestore(flags);
+  leave_critical_section(flags);
   return sample;
 
 # else /* CONFIG_SYSTEM_TIME64 */