Changes in kernel/arch/mips32/src/interrupt.c [d99c1d2:da1bafb] in mainline

File:

• kernel/arch/mips32/src/interrupt.c (modified) (4 diffs)

kernel/arch/mips32/src/interrupt.c

@@ -49 +49 @@
 static irq_t timer_irq;
 
+// TODO: This is SMP unsafe!!!
+
+uint32_t count_hi = 0;
+static unsigned long nextcount;
+static unsigned long lastcount;
+
 /** Disable interrupts.
  *
@@ -89 +95 @@
 }
 
-/* TODO: This is SMP unsafe!!! */
-uint32_t count_hi = 0;
-static unsigned long nextcount;
-static unsigned long lastcount;
+/** Check interrupts state.
+ *
+ * @return True if interrupts are disabled.
+ *
+ */
+bool interrupts_disabled(void)
+{
+        return !(cp0_status_read() & cp0_status_ie_enabled_bit);
+}
 
-/** Start hardware clock */
+/** Start hardware clock
+ *
+ */
 static void timer_start(void)
 {
@@ -109 +122 @@
 static void timer_irq_handler(irq_t *irq)
 {
-        unsigned long drift;
-        
         if (cp0_count_read() < lastcount)
                 /* Count overflow detected */
                 count_hi++;
+        
         lastcount = cp0_count_read();
         
-        drift = cp0_count_read() - nextcount;
+        unsigned long drift = cp0_count_read() - nextcount;
         while (drift > cp0_compare_value) {
                 drift -= cp0_compare_value;
                 CPU->missed_clock_ticks++;
         }
+        
         nextcount = cp0_count_read() + cp0_compare_value - drift;
         cp0_compare_write(nextcount);
@@ -128 +141 @@
          * Release the lock, call clock() and reacquire the lock again.
          */
-        spinlock_unlock(&irq->lock);
+        irq_spinlock_unlock(&irq->lock, false);
         clock();
-        spinlock_lock(&irq->lock);
+        irq_spinlock_lock(&irq->lock, false);
         
         if (virtual_timer_fnc != NULL)