Update everything under nuttx/arch to use the corrected syslog interfaces

46 files changed, 576 insertions, 375 deletions

diff --git a/nuttx/arch/arm/src/arm/up_assert.c b/nuttx/arch/arm/src/arm/up_assert.c
index c594a58de..4c54e099b 100644
--- a/nuttx/arch/arm/src/arm/up_assert.c
+++ b/nuttx/arch/arm/src/arm/up_assert.c
@@ -39,6 +39,18 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+#  undef  CONFIG_DEBUG
+#  undef  CONFIG_DEBUG_VERBOSE
+#  define CONFIG_DEBUG 1
+#  define CONFIG_DEBUG_VERBOSE 1
+#endif
+
+#include <stdarg.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -57,6 +69,7 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* USB trace dumping */
 
 #ifndef CONFIG_USBDEV_TRACE
@@ -69,15 +82,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -172,9 +176,22 @@ static inline void up_registerdump(void)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/arm/src/arm/up_dataabort.c b/nuttx/arch/arm/src/arm/up_dataabort.c
index dc2a08a47..2dbf898e1 100644
--- a/nuttx/arch/arm/src/arm/up_dataabort.c
+++ b/nuttx/arch/arm/src/arm/up_dataabort.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -56,15 +67,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/arm/up_prefetchabort.c b/nuttx/arch/arm/src/arm/up_prefetchabort.c
index 577bc1b8b..69fba8be5 100644
--- a/nuttx/arch/arm/src/arm/up_prefetchabort.c
+++ b/nuttx/arch/arm/src/arm/up_prefetchabort.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -54,17 +65,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Debug ********************************************************************/
-
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/arm/up_syscall.c b/nuttx/arch/arm/src/arm/up_syscall.c
index 4d4110b12..990baed25 100644
--- a/nuttx/arch/arm/src/arm/up_syscall.c
+++ b/nuttx/arch/arm/src/arm/up_syscall.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -51,15 +62,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/arm/up_undefinedinsn.c b/nuttx/arch/arm/src/arm/up_undefinedinsn.c
index bb80be9b2..fc5742721 100644
--- a/nuttx/arch/arm/src/arm/up_undefinedinsn.c
+++ b/nuttx/arch/arm/src/arm/up_undefinedinsn.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <assert.h>
 #include <debug.h>
@@ -51,15 +62,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/armv6-m/up_assert.c b/nuttx/arch/arm/src/armv6-m/up_assert.c
index 492ee730e..69af23fa0 100644
--- a/nuttx/arch/arm/src/armv6-m/up_assert.c
+++ b/nuttx/arch/arm/src/armv6-m/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -57,6 +68,7 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* USB trace dumping */
 
 #ifndef CONFIG_USBDEV_TRACE
@@ -69,15 +81,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -179,9 +182,22 @@ static inline void up_registerdump(void)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace,FAR  void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/arm/src/armv7-a/arm_assert.c b/nuttx/arch/arm/src/armv7-a/arm_assert.c
index a97f09197..c08da07b4 100644
--- a/nuttx/arch/arm/src/armv7-a/arm_assert.c
+++ b/nuttx/arch/arm/src/armv7-a/arm_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -69,15 +80,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -172,9 +174,22 @@ static inline void up_registerdump(void)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/arm/src/armv7-a/arm_dataabort.c b/nuttx/arch/arm/src/armv7-a/arm_dataabort.c
index 073afe210..1066a8d21 100644
--- a/nuttx/arch/arm/src/armv7-a/arm_dataabort.c
+++ b/nuttx/arch/arm/src/armv7-a/arm_dataabort.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -56,15 +67,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/armv7-a/arm_prefetchabort.c b/nuttx/arch/arm/src/armv7-a/arm_prefetchabort.c
index 089e6105c..1b4bd6dcf 100644
--- a/nuttx/arch/arm/src/armv7-a/arm_prefetchabort.c
+++ b/nuttx/arch/arm/src/armv7-a/arm_prefetchabort.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -54,17 +65,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Debug ********************************************************************/
-
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/armv7-a/arm_syscall.c b/nuttx/arch/arm/src/armv7-a/arm_syscall.c
index 343226a86..9814b7e8e 100644
--- a/nuttx/arch/arm/src/armv7-a/arm_syscall.c
+++ b/nuttx/arch/arm/src/armv7-a/arm_syscall.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <string.h>
 #include <syscall.h>
@@ -65,15 +76,6 @@
 # define svcdbg(x...)
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/armv7-a/arm_undefinedinsn.c b/nuttx/arch/arm/src/armv7-a/arm_undefinedinsn.c
index a1af60a4c..392cfb974 100644
--- a/nuttx/arch/arm/src/armv7-a/arm_undefinedinsn.c
+++ b/nuttx/arch/arm/src/armv7-a/arm_undefinedinsn.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <assert.h>
 #include <debug.h>
@@ -51,15 +62,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/armv7-m/up_assert.c b/nuttx/arch/arm/src/armv7-m/up_assert.c
index a01cc0b48..7be0d02cb 100644
--- a/nuttx/arch/arm/src/armv7-m/up_assert.c
+++ b/nuttx/arch/arm/src/armv7-m/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -69,15 +80,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -185,9 +187,22 @@ static inline void up_registerdump(void)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/arm/src/dm320/dm320_decodeirq.c b/nuttx/arch/arm/src/dm320/dm320_decodeirq.c
index 7616fe918..efdade56a 100644
--- a/nuttx/arch/arm/src/dm320/dm320_decodeirq.c
+++ b/nuttx/arch/arm/src/dm320/dm320_decodeirq.c
@@ -74,7 +74,7 @@
 void up_decodeirq(uint32_t* regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/arm/src/imx/imx_decodeirq.c b/nuttx/arch/arm/src/imx/imx_decodeirq.c
index e241ae393..4e7c4e653 100644
--- a/nuttx/arch/arm/src/imx/imx_decodeirq.c
+++ b/nuttx/arch/arm/src/imx/imx_decodeirq.c
@@ -74,7 +74,7 @@
 void up_decodeirq(uint32_t* regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/arm/src/lpc214x/lpc214x_decodeirq.c b/nuttx/arch/arm/src/lpc214x/lpc214x_decodeirq.c
index ea0eb5683..f5e467358 100644
--- a/nuttx/arch/arm/src/lpc214x/lpc214x_decodeirq.c
+++ b/nuttx/arch/arm/src/lpc214x/lpc214x_decodeirq.c
@@ -52,7 +52,7 @@
 #include "lpc214x_vic.h"
 
 /********************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ********************************************************************************/
 
 /********************************************************************************
@@ -111,7 +111,7 @@ static void lpc214x_decodeirq( uint32_t *regs)
 #endif
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/arm/src/lpc2378/lpc23xx_decodeirq.c b/nuttx/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
index 85e0d3a1a..009414e92 100644
--- a/nuttx/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
+++ b/nuttx/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
@@ -58,7 +58,7 @@
 #include "lpc23xx_vic.h"
 
 /********************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ********************************************************************************/
 
 /********************************************************************************
@@ -78,7 +78,7 @@
  ********************************************************************************/
 
 /********************************************************************************
- * Public Funstions
+ * Public Functions
  ********************************************************************************/
 
 /********************************************************************************
@@ -110,7 +110,7 @@ static void lpc23xx_decodeirq(uint32_t *regs)
 #endif
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/arm/src/lpc31xx/lpc31_decodeirq.c b/nuttx/arch/arm/src/lpc31xx/lpc31_decodeirq.c
index 355f13af3..1a29da818 100644
--- a/nuttx/arch/arm/src/lpc31xx/lpc31_decodeirq.c
+++ b/nuttx/arch/arm/src/lpc31xx/lpc31_decodeirq.c
@@ -76,7 +76,7 @@
 void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/arm/src/stm32/stm32_i2c.c b/nuttx/arch/arm/src/stm32/stm32_i2c.c
index cd4714fd4..b8bbd5820 100644
--- a/nuttx/arch/arm/src/stm32/stm32_i2c.c
+++ b/nuttx/arch/arm/src/stm32/stm32_i2c.c
@@ -921,11 +921,14 @@ static void stm32_i2c_tracedump(FAR struct stm32_i2c_priv_s *priv)
   struct stm32_trace_s *trace;
   int i;
 
-  syslog("Elapsed time: %d\n",  clock_systimer() - priv->start_time);
+  syslog(LOG_DEBUG, "Elapsed time: %d\n",
+         clock_systimer() - priv->start_time);
+
   for (i = 0; i <= priv->tndx; i++)
     {
       trace = &priv->trace[i];
-      syslog("%2d. STATUS: %08x COUNT: %3d EVENT: %2d PARM: %08x TIME: %d\n",
+      syslog(LOG_DEBUG,
+             "%2d. STATUS: %08x COUNT: %3d EVENT: %2d PARM: %08x TIME: %d\n",
              i+1, trace->status, trace->count,  trace->event, trace->parm,
              trace->time - priv->start_time);
     }
diff --git a/nuttx/arch/arm/src/stm32/stm32_i2c_alt.c b/nuttx/arch/arm/src/stm32/stm32_i2c_alt.c
index 9a6e90999..51f0238dd 100755
--- a/nuttx/arch/arm/src/stm32/stm32_i2c_alt.c
+++ b/nuttx/arch/arm/src/stm32/stm32_i2c_alt.c
@@ -949,11 +949,14 @@ static void stm32_i2c_tracedump(FAR struct stm32_i2c_priv_s *priv)
   struct stm32_trace_s *trace;
   int i;
 
-  syslog("Elapsed time: %d\n",  clock_systimer() - priv->start_time);
+  syslog(LOG_DEBUG, "Elapsed time: %d\n",
+         clock_systimer() - priv->start_time);
+
   for (i = 0; i <= priv->tndx; i++)
     {
       trace = &priv->trace[i];
-      syslog("%2d. STATUS: %08x COUNT: %4d EVENT: %4d PARM: %08x TIME: %d\n",
+      syslog(LOG_DEBUG,
+             "%2d. STATUS: %08x COUNT: %4d EVENT: %4d PARM: %08x TIME: %d\n",
              i+1, trace->status, trace->count,  trace->event, trace->parm,
              trace->time - priv->start_time);
     }
diff --git a/nuttx/arch/arm/src/stm32/stm32f30xxx_i2c.c b/nuttx/arch/arm/src/stm32/stm32f30xxx_i2c.c
index f816bad30..8118133c0 100644
--- a/nuttx/arch/arm/src/stm32/stm32f30xxx_i2c.c
+++ b/nuttx/arch/arm/src/stm32/stm32f30xxx_i2c.c
@@ -1060,13 +1060,16 @@ static void stm32_i2c_tracedump(FAR struct stm32_i2c_priv_s *priv)
   struct stm32_trace_s *trace;
   int i;
 
-  syslog("Elapsed time: %d\n",  clock_systimer() - priv->start_time);
+  syslog(LOG_DEBUG, "Elapsed time: %d\n",
+         clock_systimer() - priv->start_time);
+
   for (i = 0; i <= priv->tndx; i++)
     {
       trace = &priv->trace[i];
-      syslog("%2d. STATUS: %08x COUNT: %3d EVENT: %2d PARM: %08x TIME: %d\n",
-                    i+1, trace->status, trace->count,  trace->event, trace->parm,
-                    trace->time - priv->start_time);
+      syslog(LOG_DEBUG,
+             "%2d. STATUS: %08x COUNT: %3d EVENT: %2d PARM: %08x TIME: %d\n",
+             i+1, trace->status, trace->count,  trace->event, trace->parm,
+             trace->time - priv->start_time);
     }
 }
 #endif /* CONFIG_I2C_TRACE */
diff --git a/nuttx/arch/arm/src/str71x/str71x_decodeirq.c b/nuttx/arch/arm/src/str71x/str71x_decodeirq.c
index 0eacccf9c..6e9c9f738 100644
--- a/nuttx/arch/arm/src/str71x/str71x_decodeirq.c
+++ b/nuttx/arch/arm/src/str71x/str71x_decodeirq.c
@@ -52,7 +52,7 @@
 #include "up_internal.h"
 
 /********************************************************************************
- * Pre-procesor Definitions
+ * Pre-processor Definitions
  ********************************************************************************/
 
 /********************************************************************************
@@ -90,7 +90,7 @@ void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
   board_led_on(LED_INIRQ);
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   current_regs = regs;
   PANIC();
 #else
diff --git a/nuttx/arch/avr/src/avr/up_dumpstate.c b/nuttx/arch/avr/src/avr/up_dumpstate.c
index 8802dd80c..78a8c50bf 100644
--- a/nuttx/arch/avr/src/avr/up_dumpstate.c
+++ b/nuttx/arch/avr/src/avr/up_dumpstate.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -64,13 +71,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#undef  lldbg
-#define lldbg lowsyslog
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -275,4 +275,5 @@ void up_dumpstate(void)
 
   up_registerdump();
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/avr/src/avr32/up_dumpstate.c b/nuttx/arch/avr/src/avr32/up_dumpstate.c
index 345eb3486..55c4a7cba 100644
--- a/nuttx/arch/avr/src/avr32/up_dumpstate.c
+++ b/nuttx/arch/avr/src/avr32/up_dumpstate.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -64,13 +71,6 @@
 #  undef CONFIG_DEBUG_STACK
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#undef  lldbg
-#define lldbg lowsyslog
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/avr/src/common/up_assert.c b/nuttx/arch/avr/src/common/up_assert.c
index ee180f17f..411f7d68b 100644
--- a/nuttx/arch/avr/src/common/up_assert.c
+++ b/nuttx/arch/avr/src/common/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -76,15 +87,6 @@
 #  define CONFIG_PRINT_TASKNAME 1
 #endif
 
-/* If there is going to be stackdump output, then we should turn on output
- * here unconditionally as well.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-#  undef  lldbg
-#  define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -126,9 +128,22 @@ static void _up_assert(int errorcode)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/hc/src/m9s12/m9s12_assert.c b/nuttx/arch/hc/src/m9s12/m9s12_assert.c
index 89c4c953f..9ab95d3a9 100644
--- a/nuttx/arch/hc/src/m9s12/m9s12_assert.c
+++ b/nuttx/arch/hc/src/m9s12/m9s12_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -63,15 +74,6 @@
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -161,9 +163,22 @@ static inline void up_registerdump(void)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/mips/src/mips32/up_assert.c b/nuttx/arch/mips/src/mips32/up_assert.c
index a5af9dabc..80e95203b 100644
--- a/nuttx/arch/mips/src/mips32/up_assert.c
+++ b/nuttx/arch/mips/src/mips32/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -63,15 +74,6 @@
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -126,9 +128,22 @@ static void _up_assert(int errorcode)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/mips/src/mips32/up_dumpstate.c b/nuttx/arch/mips/src/mips32/up_dumpstate.c
index f4b35e54d..714e9a882 100644
--- a/nuttx/arch/mips/src/mips32/up_dumpstate.c
+++ b/nuttx/arch/mips/src/mips32/up_dumpstate.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -58,13 +65,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if debug is not
- * selected.
- */
-
-#undef  lldbg
-#define lldbg lowsyslog
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/sh/src/common/up_assert.c b/nuttx/arch/sh/src/common/up_assert.c
index 1aab5b7ee..f53cc38dd 100644
--- a/nuttx/arch/sh/src/common/up_assert.c
+++ b/nuttx/arch/sh/src/common/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -57,21 +68,13 @@
 /****************************************************************************
  * Definitions
  ****************************************************************************/
+
 /* USB trace dumping */
 
 #ifndef CONFIG_USBDEV_TRACE
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -113,9 +116,22 @@ static void _up_assert(int errorcode)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/sh/src/m16c/m16c_dumpstate.c b/nuttx/arch/sh/src/m16c/m16c_dumpstate.c
index 41363322e..8da3c7977 100644
--- a/nuttx/arch/sh/src/m16c/m16c_dumpstate.c
+++ b/nuttx/arch/sh/src/m16c/m16c_dumpstate.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -53,18 +60,9 @@
 #ifdef CONFIG_ARCH_STACKDUMP
 
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if  debug is not
- * selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/sh/src/sh1/sh1_dumpstate.c b/nuttx/arch/sh/src/sh1/sh1_dumpstate.c
index 5472261b3..a6e714d8c 100644
--- a/nuttx/arch/sh/src/sh1/sh1_dumpstate.c
+++ b/nuttx/arch/sh/src/sh1/sh1_dumpstate.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -52,18 +59,9 @@
 #ifdef CONFIG_ARCH_STACKDUMP
 
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/sim/src/up_initialize.c b/nuttx/arch/sim/src/up_initialize.c
index 0ab1add7f..6ae39f94a 100644
--- a/nuttx/arch/sim/src/up_initialize.c
+++ b/nuttx/arch/sim/src/up_initialize.c
@@ -119,7 +119,7 @@ void up_initialize(void)
    */
 
 #ifdef CONFIG_NET
-  syslog("SIM: Initializing");
+  syslog(LOG_INFO, "SIM: Initializing");
 #endif
 
 #if CONFIG_NFILE_DESCRIPTORS > 0
diff --git a/nuttx/arch/sim/src/up_tapdev.c b/nuttx/arch/sim/src/up_tapdev.c
index 32ddade60..11459e15e 100644
--- a/nuttx/arch/sim/src/up_tapdev.c
+++ b/nuttx/arch/sim/src/up_tapdev.c
@@ -61,9 +61,6 @@
 #include <linux/if_tun.h>
 #include <linux/net.h>
 
-extern int syslog(const char *format, ...);
-extern int netdriver_setmacaddr(unsigned char *macaddr);
-
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -84,6 +81,11 @@ extern int netdriver_setmacaddr(unsigned char *macaddr);
 #  define TAP_IPADDR3   0
 #endif
 
+/* Syslog priority (must match definitions in nuttx/include/syslog.h) */
+
+#define LOG_INFO      1  /* Informational message */
+#define LOG_ERR       4  /* Error conditions */
+
 /****************************************************************************
  * Private Types
  ****************************************************************************/
@@ -104,6 +106,13 @@ struct sel_arg_struct
  ****************************************************************************/
 
 /****************************************************************************
+ * NuttX Domain Public Function Prototypes
+ ****************************************************************************/
+
+int syslog(int priority, const char *format, ...);
+int netdriver_setmacaddr(unsigned char *macaddr);
+
+/****************************************************************************
  * Private Data
  ****************************************************************************/
 
@@ -119,8 +128,9 @@ static int gtapdevfd;
 #ifdef TAPDEV_DEBUG
 static inline void dump_ethhdr(const char *msg, unsigned char *buf, int buflen)
 {
-  syslog("TAPDEV: %s %d bytes\n", msg, buflen);
-  syslog("        %02x:%02x:%02x:%02x:%02x:%02x %02x:%02x:%02x:%02x:%02x:%02x %02x%02x\n",
+  syslog(LOG_INFO, "TAPDEV: %s %d bytes\n", msg, buflen);
+  syslog(LOG_INFO,
+         "        %02x:%02x:%02x:%02x:%02x:%02x %02x:%02x:%02x:%02x:%02x:%02x %02x%02x\n",
          buf[0], buf[1], buf[2], buf[3], buf[4],  buf[5],
          buf[6], buf[7], buf[8], buf[9], buf[10], buf[11],
 #ifdef CONFIG_ENDIAN_BIG
@@ -179,7 +189,7 @@ void tapdev_init(void)
   gtapdevfd = open(DEVTAP, O_RDWR, 0644);
   if (gtapdevfd < 0)
     {
-      syslog("TAPDEV: open failed: %d\n", -gtapdevfd );
+      syslog(LOG_ERR, "TAPDEV: open failed: %d\n", -gtapdevfd );
       return;
     }
 
@@ -190,7 +200,7 @@ void tapdev_init(void)
   ret = ioctl(gtapdevfd, TUNSETIFF, (unsigned long) &ifr);
   if (ret < 0)
     {
-      syslog("TAPDEV: ioctl failed: %d\n", -ret );
+      syslog(LOG_ERR, "TAPDEV: ioctl failed: %d\n", -ret );
       return;
    }
 
@@ -235,7 +245,7 @@ unsigned int tapdev_read(unsigned char *buf, unsigned int buflen)
   ret = read(gtapdevfd, buf, buflen);
   if (ret < 0)
     {
-      syslog("TAPDEV: read failed: %d\n", -ret);
+      syslog(LOG_ERR, "TAPDEV: read failed: %d\n", -ret);
       return 0;
     }
 
@@ -247,12 +257,12 @@ void tapdev_send(unsigned char *buf, unsigned int buflen)
 {
   int ret;
 #ifdef TAPDEV_DEBUG
-  syslog("tapdev_send: sending %d bytes\n", buflen);
+  syslog(LOG_INFO, "tapdev_send: sending %d bytes\n", buflen);
 
   gdrop++;
   if (gdrop % 8 == 7)
     {
-      syslog("Dropped a packet!\n");
+      syslog(LOG_ERR, "TAPDEV: Dropped a packet!\n");
       return;
     }
 #endif
@@ -260,7 +270,7 @@ void tapdev_send(unsigned char *buf, unsigned int buflen)
   ret = write(gtapdevfd, buf, buflen);
   if (ret < 0)
     {
-      syslog("TAPDEV: write failed: %d", -ret);
+      syslog(LOG_ERR, "TAPDEV: write failed: %d", -ret);
       exit(1);
     }
   dump_ethhdr("write", buf, buflen);
diff --git a/nuttx/arch/x86/src/common/up_assert.c b/nuttx/arch/x86/src/common/up_assert.c
index 30aee2b23..93d541e5b 100644
--- a/nuttx/arch/x86/src/common/up_assert.c
+++ b/nuttx/arch/x86/src/common/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -64,15 +75,6 @@
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /* The following is just intended to keep some ugliness out of the mainline
  * code.  We are going to print the task name if:
  *
@@ -120,9 +122,22 @@ static void up_stackdump(uint32_t sp, uint32_t stack_base)
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/x86/src/i486/up_regdump.c b/nuttx/arch/x86/src/i486/up_regdump.c
index e30670128..4cc2d8cb3 100644
--- a/nuttx/arch/x86/src/i486/up_regdump.c
+++ b/nuttx/arch/x86/src/i486/up_regdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <debug.h>
 #include <nuttx/irq.h>
 
@@ -48,11 +55,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info -- even if debug is not selected. */
-
-#undef  lldbg
-#define lldbg lowsyslog
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
diff --git a/nuttx/arch/z16/src/common/up_assert.c b/nuttx/arch/z16/src/common/up_assert.c
index df7121c04..00f840b52 100644
--- a/nuttx/arch/z16/src/common/up_assert.c
+++ b/nuttx/arch/z16/src/common/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -57,21 +68,13 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* USB trace dumping */
 
 #ifndef CONFIG_USBDEV_TRACE
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -112,9 +115,22 @@ static void _up_assert(int errorcode) /* noreturn_function */
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
-static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
+static int assert_tracecallback(FAR struct usbtrace_s *trace, FAR void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/z16/src/common/up_registerdump.c b/nuttx/arch/z16/src/common/up_registerdump.c
index 30b6227de..a447cbc45 100644
--- a/nuttx/arch/z16/src/common/up_registerdump.c
+++ b/nuttx/arch/z16/src/common/up_registerdump.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if
+ * debug is not selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+#  undef  CONFIG_DEBUG
+#  undef  CONFIG_DEBUG_VERBOSE
+#  define CONFIG_DEBUG 1
+#  define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -47,19 +58,12 @@
 
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -72,7 +76,6 @@
  * Name: up_registerdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void up_registerdump(void)
 {
   FAR uint32_t *regs32 = (FAR uint32_t*)current_regs;
@@ -86,4 +89,5 @@ static void up_registerdump(void)
   lldbg("FP :%08x SP :%08x FLG:%04x\n"
         regs32[REG_R14/2], regs32[REG_R15/2], current_regs[REG_FLAGS]);
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z16/src/common/up_stackdump.c b/nuttx/arch/z16/src/common/up_stackdump.c
index a1271b2d9..ee70a0c04 100644
--- a/nuttx/arch/z16/src/common/up_stackdump.c
+++ b/nuttx/arch/z16/src/common/up_stackdump.c
@@ -39,25 +39,25 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <debug.h>
 
 #include "chip/chip.h"
 #include "sched/sched.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -75,7 +75,6 @@
  * Name: up_stackdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void up_stackdump(void)
 {
   struct tcb_s *rtcb = (struct tcb_s*)g_readytorun.head;
@@ -105,4 +104,5 @@ static void up_stackdump(void)
         }
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z16/src/z16f/z16f_sysexec.c b/nuttx/arch/z16/src/z16f/z16f_sysexec.c
index 6a74f7ee4..b250c2b58 100644
--- a/nuttx/arch/z16/src/z16f/z16f_sysexec.c
+++ b/nuttx/arch/z16/src/z16f/z16f_sysexec.c
@@ -48,15 +48,9 @@
 #include "up_internal.h"
 
 /***************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ***************************************************************************/
 
-#ifdef CONFIG_ARCH_LOWPUTC
-#  define SYSDBG lowsyslog
-#else
-#  define SYSDBG syslog
-#endif
-
 /***************************************************************************
  * Private Types
  ***************************************************************************/
@@ -94,42 +88,42 @@ void z16f_sysexec(FAR chipreg_t *regs)
   excp = getreg16(Z16F_SYSEXCP);
   if ((excp & Z16F_SYSEXCP_SPOVF) != 0)
     {
-      SYSDBG("SP OVERFLOW\n");
+      lowsyslog(LOG_ERR, "SP OVERFLOW\n");
     }
 
   if ((excp & Z16F_SYSEXCP_PCOVF) != 0)
     {
-      SYSDBG("PC OVERFLOW\n");
+      lowsyslog(LOG_ERR, "PC OVERFLOW\n");
     }
 
   if ((excp & Z16F_SYSEXCP_DIV0) != 0)
     {
-      SYSDBG("Divide by zero\n");
+      lowsyslog(LOG_ERR, "Divide by zero\n");
     }
 
   if ((excp & Z16F_SYSEXCP_DIVOVF) != 0)
     {
-      SYSDBG("Divide overflow\n");
+      lowsyslog(LOG_ERR, "Divide overflow\n");
     }
 
   if ((excp & Z16F_SYSEXCP_ILL) != 0)
     {
-      SYSDBG("Illegal instruction\n");
+      lowsyslog(LOG_ERR, "Illegal instruction\n");
     }
 
   if ((excp & Z16F_SYSEXCP_WDTOSC) != 0)
     {
-      SYSDBG("WDT oscillator failure\n");
+      lowsyslog(LOG_ERR, "WDT oscillator failure\n");
     }
 
   if ((excp & Z16F_SYSEXCP_PRIOSC) != 0)
     {
-      SYSDBG("Primary Oscillator Failure\n");
+      lowsyslog(LOG_ERR, "Primary Oscillator Failure\n");
     }
 
   if ((excp & Z16F_SYSEXCP_WDT) != 0)
     {
-      SYSDBG("Watchdog timeout\n");
+      lowsyslog(LOG_ERR, "Watchdog timeout\n");
       z16f_reset();
     }
 
diff --git a/nuttx/arch/z80/src/common/up_assert.c b/nuttx/arch/z80/src/common/up_assert.c
index 473423262..628557a28 100644
--- a/nuttx/arch/z80/src/common/up_assert.c
+++ b/nuttx/arch/z80/src/common/up_assert.c
@@ -39,6 +39,17 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info if stack dump is selected -- even if debug is not
+ * selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  CONFIG_DEBUG
+# undef  CONFIG_DEBUG_VERBOSE
+# define CONFIG_DEBUG 1
+# define CONFIG_DEBUG_VERBOSE 1
+#endif
+
 #include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -56,21 +67,13 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* USB trace dumping */
 
 #ifndef CONFIG_USBDEV_TRACE
 #  undef CONFIG_ARCH_USBDUMP
 #endif
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -111,9 +114,22 @@ static void _up_assert(int errorcode) /* noreturn_function */
  ****************************************************************************/
 
 #ifdef CONFIG_ARCH_USBDUMP
+static int usbtrace_syslog(FAR const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  /* Let vsyslog do the real work */
+
+  va_start(ap, fmt);
+  ret = lowvsyslog(LOG_INFO, fmt, ap);
+  va_end(ap);
+  return ret;
+}
+
 static int assert_tracecallback(struct usbtrace_s *trace, void *arg)
 {
-  usbtrace_trprintf((trprintf_t)lowsyslog, trace->event, trace->value);
+  usbtrace_trprintf(FAR usbtrace_syslog, trace->event, FAR trace->value);
   return 0;
 }
 #endif
diff --git a/nuttx/arch/z80/src/common/up_doirq.c b/nuttx/arch/z80/src/common/up_doirq.c
index caa03ea9a..120fefd2c 100644
--- a/nuttx/arch/z80/src/common/up_doirq.c
+++ b/nuttx/arch/z80/src/common/up_doirq.c
@@ -77,7 +77,7 @@ FAR chipreg_t *up_doirq(uint8_t irq, FAR chipreg_t *regs)
 
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
 
-  lowsyslog("Unexpected IRQ\n");
+  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   IRQ_ENTER(regs);
   PANIC();
   return NULL; /* Won't get here */
diff --git a/nuttx/arch/z80/src/common/up_stackdump.c b/nuttx/arch/z80/src/common/up_stackdump.c
index 93dfb7291..dc19f76ed 100644
--- a/nuttx/arch/z80/src/common/up_stackdump.c
+++ b/nuttx/arch/z80/src/common/up_stackdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -46,19 +53,12 @@
 #include "sched/sched.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -76,7 +76,6 @@
  * Name: up_stackdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void up_stackdump(void)
 {
   struct tcb_s *rtcb = (struct tcb_s*)g_readytorun.head;
@@ -106,4 +105,5 @@ static void up_stackdump(void)
         }
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z80/src/ez80/ez80_registerdump.c b/nuttx/arch/z80/src/ez80/ez80_registerdump.c
index 85ab0a42a..880bdbe5e 100644
--- a/nuttx/arch/z80/src/ez80/ez80_registerdump.c
+++ b/nuttx/arch/z80/src/ez80/ez80_registerdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <debug.h>
 
 #include <nuttx/irq.h>
@@ -47,19 +54,12 @@
 #include "chip/switch.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -72,7 +72,6 @@
  * Name: z80_registerdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void ez80_registerdump(void)
 {
   if (current_regs)
@@ -98,4 +97,5 @@ static void ez80_registerdump(void)
 #endif
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z80/src/z180/z180_registerdump.c b/nuttx/arch/z80/src/z180/z180_registerdump.c
index 9b4ed60f9..bf6e52bd4 100644
--- a/nuttx/arch/z80/src/z180/z180_registerdump.c
+++ b/nuttx/arch/z80/src/z180/z180_registerdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <debug.h>
 
 #include <nuttx/irq.h>
@@ -47,19 +54,12 @@
 #include "chip/switch.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -72,7 +72,6 @@
  * Name: z180_registerdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void z180_registerdump(void)
 {
   if (current_regs)
@@ -89,4 +88,5 @@ static void z180_registerdump(void)
             inp(Z180_MMU_CBAR), inp(Z180_MMU_BBR), inp(Z180_MMU_CBR));
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z80/src/z8/z8_registerdump.c b/nuttx/arch/z80/src/z8/z8_registerdump.c
index c80b7da68..df6c761a7 100644
--- a/nuttx/arch/z80/src/z8/z8_registerdump.c
+++ b/nuttx/arch/z80/src/z8/z8_registerdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <stdint.h>
 #include <debug.h>
 
@@ -48,19 +55,12 @@
 #include "chip/switch.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -69,7 +69,6 @@
  * Private Functions
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static inline void z8_dumpregs(FAR chipret_t *regs)
 {
   lldbg("REGS: %04x %04x %04x %04x %04x %04x %04x %04x\n",
@@ -84,8 +83,6 @@ static inline void z8_dumpstate(chipreg_t sp, chipreg_t pc, uint8_t irqctl,
         sp, pc, irqctl & 0xff, rpflags >> 8, rpflags & 0xff);
 }
 
-#endif
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -94,7 +91,6 @@ static inline void z8_dumpstate(chipreg_t sp, chipreg_t pc, uint8_t irqctl,
  * Name: z8_registerdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 void z8_registerdump(void)
 {
   FAR chipret_t *regs;
@@ -137,4 +133,5 @@ void z8_registerdump(void)
         break;
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/arch/z80/src/z80/z80_registerdump.c b/nuttx/arch/z80/src/z80/z80_registerdump.c
index 86b2e1895..4d80a545c 100644
--- a/nuttx/arch/z80/src/z80/z80_registerdump.c
+++ b/nuttx/arch/z80/src/z80/z80_registerdump.c
@@ -39,6 +39,13 @@
 
 #include <nuttx/config.h>
 
+/* Output debug info -- even if debug is not selected. */
+
+#undef  CONFIG_DEBUG
+#undef  CONFIG_DEBUG_VERBOSE
+#define CONFIG_DEBUG 1
+#define CONFIG_DEBUG_VERBOSE 1
+
 #include <debug.h>
 
 #include <nuttx/irq.h>
@@ -47,19 +54,12 @@
 #include "chip/switch.h"
 #include "up_internal.h"
 
+#ifdef CONFIG_ARCH_STACKDUMP
+
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
-/* Output debug info if stack dump is selected -- even if
- * debug is not selected.
- */
-
-#ifdef CONFIG_ARCH_STACKDUMP
-# undef  lldbg
-# define lldbg lowsyslog
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -72,7 +72,6 @@
  * Name: z80_registerdump
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_STACKDUMP
 static void z80_registerdump(void)
 {
   if (current_regs)
@@ -87,4 +86,5 @@ static void z80_registerdump(void)
             current_regs[XCPT_SP], current_regs[XCPT_PC]);
     }
 }
-#endif
+
+#endif /* CONFIG_ARCH_STACKDUMP */
diff --git a/nuttx/include/syslog.h b/nuttx/include/syslog.h
index b9fe547ee..6aebb367e 100644
--- a/nuttx/include/syslog.h
+++ b/nuttx/include/syslog.h
@@ -98,6 +98,11 @@
 #define LOG_INFO      1  /* Informational message */
 #define LOG_DEBUG     0  /* Debug-level message */
 
+/* Used with setlogmask() */
+
+#define LOG_MASK(p)   (1 << (p))
+#define LOG_UPTO(p)   ((1 << (p)) - 1)
+
 /****************************************************************************
  * Public Type Declarations
  ****************************************************************************/