Kernel updates since December 2009

conts/test_suite0/include/debug.h

@@ -0,0 +1,44 @@
+/*
+ * Debug/performance measurements for mm0
+ *
+ * Copyright (C) 2010 B Labs Ltd.
+ */
+#ifndef __ARCH_DEBUG_H__
+#define __ARCH_DEBUG_H__
+
+#if !defined(CONFIG_DEBUG_PERFMON_USER)
+
+#include <l4lib/types.h>
+
+/* Common empty definitions for all arches */
+static inline u32 perfmon_read_cyccnt() { return 0; }
+
+static inline void perfmon_reset_start_cyccnt() { }
+static inline u32 perfmon_read_reset_start_cyccnt() { return 0; }
+
+#define debug_record_cycles(str)
+
+#else /* End of CONFIG_DEBUG_PERFMON_USER */
+
+/* Architecture specific perfmon cycle counting */
+#include L4LIB_INC_SUBARCH(perfmon.h)
+
+extern u64 perfmon_total_cycles;
+extern u64 current_cycles;
+
+/*
+ * This is for Cortex-A9 running at 400Mhz. 25 / 100000 is
+ * a rewriting of 2.5 nanosec / 1,000,000
+ */
+#define debug_record_cycles(str)			\
+{							\
+	current_cycles = perfmon_read_cyccnt();		\
+	perfmon_total_cycles += current_cycles;		\
+	printf("%s: took %llu milliseconds\n", str,	\
+	       current_cycles * 64 * 25 / 100000);	\
+	perfmon_reset_start_cyccnt();			\
+}
+
+#endif /* End of !CONFIG_DEBUG_PERFMON_USER */
+
+#endif /* __ARCH_DEBUG_H__ */