Fix for SPROFILE == 0

- contributed by Antoine Leca

kernel/arch/i386/arch_clock.c

@@ -288,9 +288,10 @@ PUBLIC void context_stop_idle(void)
 
 	if (is_idle)
 		restart_local_timer();
-
+#if SPROFILE
 	if (sprofiling)
 		get_cpulocal_var(idle_interrupted) = 1;
+#endif
 }
 
 PUBLIC u64_t ms_2_cpu_time(unsigned ms)

kernel/proc.c

@@ -222,6 +222,9 @@ PRIVATE void idle(void)
 
 	/* start accounting for the idle time */
 	context_stop(proc_addr(KERNEL));
+#if !SPROFILE
+	halt_cpu();
+#else
 	if (!sprofiling)
 		halt_cpu();
 	else {
@@ -234,6 +237,7 @@ PRIVATE void idle(void)
 		interrupts_disable();
 		*v = 0;
 	}
+#endif
 	/*
 	 * end of accounting for the idle task does not happen here, the kernel
 	 * is handling stuff for quite a while before it gets back here!

kernel/watchdog.c

@@ -52,6 +52,7 @@ PRIVATE void lockup_check(struct nmi_frame * frame)
 
 PUBLIC void nmi_watchdog_handler(struct nmi_frame * frame)
 {
+#if SPROFILE
 	/*
 	 * Do not check for lockups while profiling, it is extremely likely that
 	 * a false positive is detected if the frequency is high
@@ -63,6 +64,13 @@ PUBLIC void nmi_watchdog_handler(struct nmi_frame * frame)
 	
 	if ((watchdog_enabled || sprofiling) && watchdog->reinit)
 		watchdog->reinit(cpuid);
+#else
+	if (watchdog_enabled) {
+		lockup_check(frame);
+		if (watchdog->reinit)
+			watchdog->reinit(cpuid);
+	}
+#endif
 }
 
 int nmi_watchdog_start_profiling(const unsigned freq)