Extend and rework tracing. If ATA_TRACING is enabled in the tracing config it

will now log all the tracing details with ktrace_printf. Additionally messages
that should always be printed are outputted to the syslog.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30108 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/bus_managers/ata/ATATracing.cpp

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2009, Michael Lotz, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+#include "ATATracing.h"
+
+#include <stdarg.h>
+
+static char sTraceBuffer[256];
+static uint32 sTraceBufferOffset = 0;
+
+void
+ata_trace_printf(uint32 flags, const char *format, ...)
+{
+	va_list arguments;
+	va_start(arguments, format);
+	sTraceBufferOffset += vsnprintf(sTraceBuffer + sTraceBufferOffset,
+		sizeof(sTraceBuffer) - sTraceBufferOffset, format, arguments);
+	va_end(arguments);
+
+	if (flags & ATA_TRACE_FLUSH) {
+#if ATA_TRACING
+		ktrace_printf(sTraceBuffer);
+#endif
+		if (flags & ATA_TRACE_SYSLOG)
+			dprintf(sTraceBuffer);
+
+		sTraceBufferOffset = 0;
+	}
+}

src/add-ons/kernel/bus_managers/ata/ATATracing.h

@@ -5,16 +5,24 @@
 #ifndef ATA_TRACING_H
 #define ATA_TRACING_H
 
-//#define TRACE_ATA
-#ifdef TRACE_ATA
+#include <tracing.h>
+
+#define ATA_TRACE_START			0x00
+#define ATA_TRACE_FLUSH			0x01
+#define	ATA_TRACE_SYSLOG		0x02
+#define ATA_TRACE_FLUSH_SYSLOG	0x03
+
+#if ATA_TRACING
 #define TRACE(x...)				{ \
-									dprintf("ata%s: ", _DebugContext()); \
-									dprintf(x); \
+									ata_trace_printf(ATA_TRACE_START, \
+										"ata%s: ", _DebugContext()); \
+									ata_trace_printf(ATA_TRACE_FLUSH, x); \
 								}
 #define TRACE_FUNCTION(x...)	{ \
-									dprintf("ata%s: %s: ", _DebugContext(), \
+									ata_trace_printf(ATA_TRACE_START, \
+										"ata%s: %s: ", _DebugContext(), \
 										__FUNCTION__); \
-									dprintf(x); \
+									ata_trace_printf(ATA_TRACE_FLUSH, x); \
 								}
 #else
 #define TRACE(x...)				/* nothing */
@@ -22,14 +30,18 @@
 #endif
 
 #define TRACE_ALWAYS(x...)		{ \
-									dprintf("ata%s: ", _DebugContext()); \
-									dprintf(x); \
+									ata_trace_printf(ATA_TRACE_START, \
+										"ata%s: ", _DebugContext()); \
+									ata_trace_printf(ATA_TRACE_FLUSH_SYSLOG, x); \
 								}
 #define TRACE_ERROR(x...)		{ \
-									dprintf("ata%s error: ", _DebugContext()); \
-									dprintf(x); \
+									ata_trace_printf(ATA_TRACE_START, \
+										"ata%s error: ", _DebugContext()); \
+									ata_trace_printf(ATA_TRACE_FLUSH_SYSLOG, x); \
 								}
 
+void ata_trace_printf(uint32 flags, const char *format, ...);
+
 inline const char *
 _DebugContext()
 {

src/add-ons/kernel/bus_managers/ata/Jamfile

@@ -27,4 +27,5 @@ KernelAddon ata :
 	ATAModule.cpp
 	ATAPIDevice.cpp
 	ATARequest.cpp
+	ATATracing.cpp
 	;