diff --git a/arch/arm/src/dm320/dm320_decodeirq.c b/arch/arm/src/dm320/dm320_decodeirq.c
index 5d36a6bdc65..5d7e7095881 100644
--- a/arch/arm/src/dm320/dm320_decodeirq.c
+++ b/arch/arm/src/dm320/dm320_decodeirq.c
@@ -51,22 +51,6 @@
 
 #include "group/group.h"
 
-/********************************************************************************
- * Pre-processor Definitions
- ********************************************************************************/
-
-/********************************************************************************
- * Public Data
- ********************************************************************************/
-
-/********************************************************************************
- * Private Data
- ********************************************************************************/
-
-/********************************************************************************
- * Private Functions
- ********************************************************************************/
-
 /********************************************************************************
  * Public Functions
  ********************************************************************************/
@@ -74,8 +58,8 @@
 void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   CURRENT_REGS = regs;
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
 #else
   /* Decode the interrupt.  First, fetch the interrupt id register. */
diff --git a/arch/arm/src/imx1/imx_decodeirq.c b/arch/arm/src/imx1/imx_decodeirq.c
index 5c35e68fab2..48164d9099c 100644
--- a/arch/arm/src/imx1/imx_decodeirq.c
+++ b/arch/arm/src/imx1/imx_decodeirq.c
@@ -74,8 +74,8 @@
 void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   CURRENT_REGS = regs;
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
 #else
   uint32_t regval;
diff --git a/arch/arm/src/lpc214x/lpc214x_decodeirq.c b/arch/arm/src/lpc214x/lpc214x_decodeirq.c
index 382c0bba022..331fea560eb 100644
--- a/arch/arm/src/lpc214x/lpc214x_decodeirq.c
+++ b/arch/arm/src/lpc214x/lpc214x_decodeirq.c
@@ -111,8 +111,8 @@ static void lpc214x_decodeirq(uint32_t *regs)
 #endif
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   CURRENT_REGS = regs;
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
 #else
 
diff --git a/arch/arm/src/lpc2378/lpc23xx_decodeirq.c b/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
index aca536e6651..9c0e0b5b764 100644
--- a/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
+++ b/arch/arm/src/lpc2378/lpc23xx_decodeirq.c
@@ -110,9 +110,9 @@ static void lpc23xx_decodeirq(uint32_t *regs)
 #endif
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
-  CURRENT_REGS = regs;
   PANIC();
+  err("ERROR: Unexpected IRQ\n");
+  CURRENT_REGS = regs;
 #else
 
   /* Check which IRQ fires */
diff --git a/arch/arm/src/lpc31xx/lpc31_decodeirq.c b/arch/arm/src/lpc31xx/lpc31_decodeirq.c
index 9cfcd3f4435..a4f7a11628f 100644
--- a/arch/arm/src/lpc31xx/lpc31_decodeirq.c
+++ b/arch/arm/src/lpc31xx/lpc31_decodeirq.c
@@ -76,8 +76,8 @@
 void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   CURRENT_REGS = regs;
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
 #else
   int index;
diff --git a/arch/arm/src/str71x/str71x_decodeirq.c b/arch/arm/src/str71x/str71x_decodeirq.c
index bdf8015e912..88751c80c14 100644
--- a/arch/arm/src/str71x/str71x_decodeirq.c
+++ b/arch/arm/src/str71x/str71x_decodeirq.c
@@ -91,8 +91,8 @@ void up_decodeirq(uint32_t *regs)
 {
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
   board_autoled_on(LED_INIRQ);
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   CURRENT_REGS = regs;
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
 #else
   unsigned int irq;
diff --git a/arch/avr/include/debug.h b/arch/avr/include/debug.h
index b95e9b9322a..05116b4418a 100644
--- a/arch/avr/include/debug.h
+++ b/arch/avr/include/debug.h
@@ -72,19 +72,15 @@
     } \
   while(0)
 
-/* __arch_syslog() and __arch_lowsyslog() override behavior of NuttX
- * dbg macros. They put the format string into program memory and
- * utilize IPTR (__memx) parameter of syslog to take the format
- * directly from program memory.  This reduces amount of RAM held by
- * the format strings used in debug statements.
+/* __arch_syslog() overrides the behavior of NuttX debug macros. They put
+ * the format string into program memory and utilize IPTR (__memx) parameter
+ * of syslog to take the format directly from program memory.  This reduces
+ * amount of RAM held by the format strings used in debug statements.
  */
 
 #define __arch_syslog(...) \
    __dbg_expand(syslog, ##__VA_ARGS__)
 
-#define __arch_lowsyslog(...) \
-   __dbg_expand(lowsyslog, ##__VA_ARGS__)
-
 #endif /* CONFIG_AVR_HAS_MEMX_PTR */
 
 #endif /* __INCLUDE_ARCH_DEBUG_H */
diff --git a/arch/sim/src/up_schednote.c b/arch/sim/src/up_schednote.c
index 41797969b2c..28e2fd8fbf0 100644
--- a/arch/sim/src/up_schednote.c
+++ b/arch/sim/src/up_schednote.c
@@ -68,19 +68,19 @@ void sched_note_start(FAR struct tcb_s *tcb)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Start %s, TCB@%p, state=%d\n",
-            tcb->cpu, tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Start %s, TCB@%p, state=%d\n",
+         tcb->cpu, tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "CPU%d: Start TCB@%p, state=%d\n"
-            tcb->cpu, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Start TCB@%p, state=%d\n"
+         tcb->cpu, tcb, tcb->task_state);
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Start %s, TCB@%p, state=%d\n",
-            tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "Start %s, TCB@%p, state=%d\n",
+         tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "Start TCB@%p, state=%d\n",
-            tcb, tcb->task_state);
+  syslog(LOG_INFO, "Start TCB@%p, state=%d\n",
+         tcb, tcb->task_state);
 #endif
 #endif
 }
@@ -89,19 +89,19 @@ void sched_note_stop(FAR struct tcb_s *tcb)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Stop %s, TCB@%p, state=%d\n",
-            tcb->cpu, tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Stop %s, TCB@%p, state=%d\n",
+         tcb->cpu, tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "CPU%d: Stop TCB@%p, state=%d\n",
-            tcb->cpu, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Stop TCB@%p, state=%d\n",
+         tcb->cpu, tcb, tcb->task_state);
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Stop %s, TCB@%p, state=%d\n",
-            tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "Stop %s, TCB@%p, state=%d\n",
+         tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "Stop TCB@%p, state=%d\n",
-            tcb, tcb->task_state);
+  syslog(LOG_INFO, "Stop TCB@%p, state=%d\n",
+         tcb, tcb->task_state);
 #endif
 #endif
 }
@@ -110,19 +110,19 @@ void sched_note_suspend(FAR struct tcb_s *tcb)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Suspend %s, TCB@%p, state=%d\n",
-            tcb->cpu, tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Suspend %s, TCB@%p, state=%d\n",
+         tcb->cpu, tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "CPU%d: Suspend TCB@%p, state=%d\n",
-            tcb->cpu, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Suspend TCB@%p, state=%d\n",
+         tcb->cpu, tcb, tcb->task_state);
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Suspend %s, TCB@%p, state=%d\n",
-            tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "Suspend %s, TCB@%p, state=%d\n",
+         tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "Suspend TCB@%p, state=%d\n",
-            tcb, tcb->task_state);
+  syslog(LOG_INFO, "Suspend TCB@%p, state=%d\n",
+         tcb, tcb->task_state);
 #endif
 #endif
 }
@@ -131,19 +131,19 @@ void sched_note_resume(FAR struct tcb_s *tcb)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Resume %s, TCB@%p, state=%d\n",
-            tcb->cpu, tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Resume %s, TCB@%p, state=%d\n",
+         tcb->cpu, tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "CPU%d: Resume TCB@%p, state=%d\n",
-            tcb->cpu, tcb, tcb->task_state);
+  syslog(LOG_INFO, "CPU%d: Resume TCB@%p, state=%d\n",
+         tcb->cpu, tcb, tcb->task_state);
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Resume %s, TCB@%p, state=%d\n",
-            tcb->name, tcb, tcb->task_state);
+  syslog(LOG_INFO, "Resume %s, TCB@%p, state=%d\n",
+         tcb->name, tcb, tcb->task_state);
 #else
-  lowsyslog(LOG_INFO, "Resume TCB@%p, state=%d\n",
-            tcb, tcb->task_state);
+  syslog(LOG_INFO, "Resume TCB@%p, state=%d\n",
+         tcb, tcb->task_state);
 #endif
 #endif
 }
@@ -160,19 +160,19 @@ void sched_note_premption(FAR struct tcb_s *tcb, bool locked)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Task %s TCB@%p preemption %s\n",
-            tcb->cpu, tcb->name, tcb, locked ? "LOCKED" : "UNLOCKED");
+  syslog(LOG_INFO, "CPU%d: Task %s TCB@%p preemption %s\n",
+         tcb->cpu, tcb->name, tcb, locked ? "LOCKED" : "UNLOCKED");
 #else
-  lowsyslog(LOG_INFO, "CPU%d: TCB@%p preemption %s\n",
-            tcb->cpu, tcb, locked ? "LOCKED" : "UNLOCKED");
+  syslog(LOG_INFO, "CPU%d: TCB@%p preemption %s\n",
+         tcb->cpu, tcb, locked ? "LOCKED" : "UNLOCKED");
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Task %s, TCB@%p preemption %s\n",
-            tcb->name, tcb, locked ? "LOCKED" : "UNLOCKED");
+  syslog(LOG_INFO, "Task %s, TCB@%p preemption %s\n",
+         tcb->name, tcb, locked ? "LOCKED" : "UNLOCKED");
 #else
-  lowsyslog(LOG_INFO, "TCB@%p preemption %s\n",
-            tcb, locked ? "LOCKED" : "UNLOCKED");
+  syslog(LOG_INFO, "TCB@%p preemption %s\n",
+         tcb, locked ? "LOCKED" : "UNLOCKED");
 #endif
 #endif
 }
@@ -190,19 +190,19 @@ void sched_note_csection(FAR struct tcb_s *tcb, bool enter)
 {
 #ifdef CONFIG_SMP
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "CPU%d: Task %s TCB@%p critical section %s\n",
-            tcb->cpu, tcb->name, tcb, enter ? "ENTER" : "LEAVE");
+  syslog(LOG_INFO, "CPU%d: Task %s TCB@%p critical section %s\n",
+         tcb->cpu, tcb->name, tcb, enter ? "ENTER" : "LEAVE");
 #else
-  lowsyslog(LOG_INFO, "CPU%d: TCB@%p critical section %s\n",
-            tcb->cpu, tcb, enter ? "ENTER" : "LEAVE");
+  syslog(LOG_INFO, "CPU%d: TCB@%p critical section %s\n",
+         tcb->cpu, tcb, enter ? "ENTER" : "LEAVE");
 #endif
 #else
 #if CONFIG_TASK_NAME_SIZE > 0
-  lowsyslog(LOG_INFO, "Task %s, TCB@%p critical section %s\n",
-            tcb->name, tcb, enter ? "ENTER" : "LEAVE");
+  syslog(LOG_INFO, "Task %s, TCB@%p critical section %s\n",
+         tcb->name, tcb, enter ? "ENTER" : "LEAVE");
 #else
-  lowsyslog(LOG_INFO, "TCB@%p critical section %s\n",
-            tcb, enter ? "ENTER" : "LEAVE");
+  syslog(LOG_INFO, "TCB@%p critical section %s\n",
+         tcb, enter ? "ENTER" : "LEAVE");
 #endif
 #endif
 }
diff --git a/arch/z16/src/z16f/z16f_sysexec.c b/arch/z16/src/z16f/z16f_sysexec.c
index d7ac6317513..7c3eafa0ab6 100644
--- a/arch/z16/src/z16f/z16f_sysexec.c
+++ b/arch/z16/src/z16f/z16f_sysexec.c
@@ -88,42 +88,42 @@ void z16f_sysexec(FAR chipreg_t *regs)
   excp = getreg16(Z16F_SYSEXCP);
   if ((excp & Z16F_SYSEXCP_SPOVF) != 0)
     {
-      lowsyslog(LOG_ERR, "SP OVERFLOW\n");
+      err("ERROR: SP OVERFLOW\n");
     }
 
   if ((excp & Z16F_SYSEXCP_PCOVF) != 0)
     {
-      lowsyslog(LOG_ERR, "PC OVERFLOW\n");
+      err("ERROR: PC OVERFLOW\n");
     }
 
   if ((excp & Z16F_SYSEXCP_DIV0) != 0)
     {
-      lowsyslog(LOG_ERR, "Divide by zero\n");
+      err("ERROR: Divide by zero\n");
     }
 
   if ((excp & Z16F_SYSEXCP_DIVOVF) != 0)
     {
-      lowsyslog(LOG_ERR, "Divide overflow\n");
+      err("ERROR: Divide overflow\n");
     }
 
   if ((excp & Z16F_SYSEXCP_ILL) != 0)
     {
-      lowsyslog(LOG_ERR, "Illegal instruction\n");
+      err("ERROR: Illegal instruction\n");
     }
 
   if ((excp & Z16F_SYSEXCP_WDTOSC) != 0)
     {
-      lowsyslog(LOG_ERR, "WDT oscillator failure\n");
+      err("ERROR: WDT oscillator failure\n");
     }
 
   if ((excp & Z16F_SYSEXCP_PRIOSC) != 0)
     {
-      lowsyslog(LOG_ERR, "Primary Oscillator Failure\n");
+      err("ERROR: Primary Oscillator Failure\n");
     }
 
   if ((excp & Z16F_SYSEXCP_WDT) != 0)
     {
-      lowsyslog(LOG_ERR, "Watchdog timeout\n");
+      err("ERROR: Watchdog timeout\n");
       z16f_reset();
     }
 
diff --git a/arch/z80/src/common/up_doirq.c b/arch/z80/src/common/up_doirq.c
index 30e2caf9fd1..878594a126c 100644
--- a/arch/z80/src/common/up_doirq.c
+++ b/arch/z80/src/common/up_doirq.c
@@ -78,8 +78,8 @@ FAR chipreg_t *up_doirq(uint8_t irq, FAR chipreg_t *regs)
 
 #ifdef CONFIG_SUPPRESS_INTERRUPTS
 
-  lowsyslog(LOG_ERR, "Unexpected IRQ\n");
   IRQ_ENTER(regs);
+  err("ERROR: Unexpected IRQ\n");
   PANIC();
   return NULL; /* Won't get here */
 
diff --git a/configs/ea3131/src/lpc31_usbmsc.c b/configs/ea3131/src/lpc31_usbmsc.c
index f55bdc8e10f..0d9736d4d6b 100644
--- a/configs/ea3131/src/lpc31_usbmsc.c
+++ b/configs/ea3131/src/lpc31_usbmsc.c
@@ -93,8 +93,7 @@ int board_usbmsc_initialize(int port)
   pbuffer = (uint8_t *)kmm_malloc(BUFFER_SIZE);
   if (!pbuffer)
     {
-      lowsyslog(LOG_ERR, "ERROR: Failed to allocate ramdisk of size %d\n",
-                BUFFER_SIZE);
+      err("ERROR: Failed to allocate ramdisk of size %d\n", BUFFER_SIZE);
       return -ENOMEM;
     }
 
@@ -107,9 +106,8 @@ int board_usbmsc_initialize(int port)
                          RDFLAG_WRENABLED | RDFLAG_FUNLINK);
   if (ret < 0)
     {
-      syslog(LOG_ERR,
-             "ERROR: create_ramdisk: Failed to register ramdisk at %s: %d\n",
-             g_source, -ret);
+      err("ERROR: create_ramdisk: Failed to register ramdisk at %s: %d\n",
+          g_source, -ret);
       kmm_free(pbuffer);
       return ret;
     }
@@ -119,9 +117,8 @@ int board_usbmsc_initialize(int port)
   ret = mkfatfs(g_source, &g_fmt);
   if (ret < 0)
     {
-      syslog(LOG_ERR,
-             "ERROR: create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
-             g_source);
+      err("ERROR: create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
+          g_source);
       /* kmm_free(pbuffer); -- RAM disk is registered */
       return ret;
     }
diff --git a/configs/ea3152/src/lpc31_usbmsc.c b/configs/ea3152/src/lpc31_usbmsc.c
index e251d5cbc02..b3e431eeba8 100644
--- a/configs/ea3152/src/lpc31_usbmsc.c
+++ b/configs/ea3152/src/lpc31_usbmsc.c
@@ -93,8 +93,8 @@ int board_usbmsc_initialize(int port)
   pbuffer = (uint8_t *)kmm_malloc(BUFFER_SIZE);
   if (!pbuffer)
     {
-      lowsyslog("board_usbmsc_initialize: Failed to allocate ramdisk of size %d\n",
-                BUFFER_SIZE);
+      err("ERROR: board_usbmsc_initialize: Failed to allocate ramdisk of size %d\n",
+          BUFFER_SIZE);
       return -ENOMEM;
     }
 
@@ -107,8 +107,8 @@ int board_usbmsc_initialize(int port)
                          RDFLAG_WRENABLED | RDFLAG_FUNLINK);
   if (ret < 0)
     {
-      printf("create_ramdisk: Failed to register ramdisk at %s: %d\n",
-             g_source, -ret);
+      err("ERROR: create_ramdisk: Failed to register ramdisk at %s: %d\n",
+          g_source, -ret);
       kmm_free(pbuffer);
       return ret;
     }
@@ -118,8 +118,8 @@ int board_usbmsc_initialize(int port)
   ret = mkfatfs(g_source, &g_fmt);
   if (ret < 0)
     {
-      printf("create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
-             g_source);
+      err("ERROR: create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
+          g_source);
       /* kmm_free(pbuffer); -- RAM disk is registered */
       return ret;
     }
diff --git a/configs/pcduino-a10/nsh/pcduino-140107.patch b/configs/pcduino-a10/nsh/pcduino-140107.patch
index 1d0b6651844..2dcd324a7d8 100644
--- a/configs/pcduino-a10/nsh/pcduino-140107.patch
+++ b/configs/pcduino-a10/nsh/pcduino-140107.patch
@@ -6,14 +6,14 @@ index 3cc6323..ad42790 100644
     * for all IO regions (Including the vector region).
     */
  
-+lowsyslog(LOG_INFO, "Calling a1x_setupmappings\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_setupmappings\n"); // REMOVE ME
    a1x_setupmappings();
  
    /* Provide a special mapping for the IRAM interrupt vector positioned in
     * high memory.
     */
  
-+lowsyslog(LOG_INFO, "Calling a1x_vectormapping\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_vectormapping\n"); // REMOVE ME
    a1x_vectormapping();
  
  #endif /* CONFIG_ARCH_ROMPGTABLE */
@@ -21,19 +21,19 @@ index 3cc6323..ad42790 100644
     * arm_vector.S
     */
  
-+lowsyslog(LOG_INFO, "Calling a1x_copyvectorblock\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_copyvectorblock\n"); // REMOVE ME
    a1x_copyvectorblock();
  
    /* Initialize the FPU */
  
  #ifdef CONFIG_ARCH_FPU
-+lowsyslog(LOG_INFO, "Calling arm_fpuconfig\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling arm_fpuconfig\n"); // REMOVE ME
    arm_fpuconfig();
  #endif
  
    /* Perform common, low-level chip initialization (might do nothing) */
  
-+lowsyslog(LOG_INFO, "Calling a1x_lowsetup\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_lowsetup\n"); // REMOVE ME
    a1x_lowsetup();
  
    /* Perform early serial initialization if we are going to use the serial
@@ -41,7 +41,7 @@ index 3cc6323..ad42790 100644
     */
  
  #ifdef USE_EARLYSERIALINIT
-+lowsyslog(LOG_INFO, "Calling up_earlyserialinit\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling up_earlyserialinit\n"); // REMOVE ME
    up_earlyserialinit();
  #endif
  
@@ -49,7 +49,7 @@ index 3cc6323..ad42790 100644
     */
  
  #ifdef CONFIG_BUILD_PROTECTED
-+lowsyslog(LOG_INFO, "Calling a1x_userspace\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_userspace\n"); // REMOVE ME
    a1x_userspace();
  #endif
  
@@ -57,9 +57,9 @@ index 3cc6323..ad42790 100644
     * - Configuration of board specific resources (PIOs, LEDs, etc).
     */
  
-+lowsyslog(LOG_INFO, "Calling a1x_boardinitialize\n"); // REMOVE ME
++syslog(LOG_INFO, "Calling a1x_boardinitialize\n"); // REMOVE ME
    a1x_boardinitialize();
-+lowsyslog(LOG_INFO, "Returning\n"); // REMOVE ME
++syslog(LOG_INFO, "Returning\n"); // REMOVE ME
  }
 diff --git a/nuttx/arch/arm/src/armv7-a/arm_head.S b/nuttx/arch/arm/src/armv7-a/arm_head.S
 index bce82d5..924bd24 100644
diff --git a/configs/sabre-6quad/README.txt b/configs/sabre-6quad/README.txt
index 13e6e5c2306..f94614ae63d 100644
--- a/configs/sabre-6quad/README.txt
+++ b/configs/sabre-6quad/README.txt
@@ -97,31 +97,9 @@ Status
     -CONFIG_RAMLOG_NPOLLWAITERS=4
 
   I would also disable debug output from CPU0 so that I could better see the
-  debug output from CPU1:
+  debug output from CPU1.  In drivers/syslog/vsyslog.c:
 
-    $ diff -u libc/syslog/lib_lowsyslog.c libc/syslog/lib_lowsyslog.c.SAVE
-    --- libc/syslog/lib_lowsyslog.c 2016-05-22 14:56:35.130096500 -0600
-    +++ libc/syslog/lib_lowsyslog.c.SAVE    2016-05-20 13:36:22.588330100 -0600
-    @@ -126,7 +126,0 @@
-     {
-       va_list ap;
-       int ret;
     +if (up_cpu_index() == 0) return 17; // REMOVE ME
-      
-       /* Let lowvsyslog do the work */
-    
-       va_start(ap, fmt);
-  
-    $ diff -u libc/syslog/lib_syslog.c libc/syslog/lib_syslog.c.SAVE
-    --- libc/syslog/lib_syslog.c    2016-05-22 14:56:35.156098100 -0600
-    +++ libc/syslog/lib_syslog.c.SAVE       2016-05-20 13:36:15.331284000 -0600
-    @@ -192,6 +192,7 @@
-     {
-       va_list ap;
-       int ret;
-    +if (up_cpu_index() == 0) return 17; // REMOVE ME
-    
-       /* Let vsyslog do the work */
 
 Platform Features
 =================
diff --git a/configs/stm3210e-eval/src/stm32_pmbuttons.c b/configs/stm3210e-eval/src/stm32_pmbuttons.c
index 49be1db7e22..3e723af37fb 100644
--- a/configs/stm3210e-eval/src/stm32_pmbuttons.c
+++ b/configs/stm3210e-eval/src/stm32_pmbuttons.c
@@ -318,9 +318,9 @@ void stm32_pmbuttons(void)
 
       if (oldhandler != NULL)
         {
-          lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
-                    "Button events may be lost or aliased!\n",
-                    oldhandler);
+          warn("WARNING: oldhandler:%p is not NULL!  "
+               "Button events may be lost or aliased!\n",
+               oldhandler);
         }
     }
 #endif
diff --git a/configs/stm3220g-eval/ide/nsh/iar/libc.ewp b/configs/stm3220g-eval/ide/nsh/iar/libc.ewp
index 8804fd90438..db57f8d8b93 100644
--- a/configs/stm3220g-eval/ide/nsh/iar/libc.ewp
+++ b/configs/stm3220g-eval/ide/nsh/iar/libc.ewp
@@ -2631,9 +2631,6 @@
     <file>
       <name>$PROJ_DIR$/../../../../../libc/syslog/lib_syslog.c</name>
     </file>
-    <file>
-      <name>$PROJ_DIR$/../../../../../libc/syslog/lib_lowsyslog.c</name>
-    </file>
     <file>
       <name>$PROJ_DIR$/../../../../../libc/syslog/lib_setlogmask.c</name>
     </file>
diff --git a/configs/stm3220g-eval/ide/nsh/uvision/libc.uvproj b/configs/stm3220g-eval/ide/nsh/uvision/libc.uvproj
index 5baf501cd84..31ee6e86a52 100644
--- a/configs/stm3220g-eval/ide/nsh/uvision/libc.uvproj
+++ b/configs/stm3220g-eval/ide/nsh/uvision/libc.uvproj
@@ -1478,16 +1478,6 @@
               <FileType>1</FileType>
               <FilePath>../../../../../libc/symtab/symtab_findorderedbyvalue.c</FilePath>
             </File>
-            <File>
-              <FileName>lib_syslog.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>../../../../../libc/syslog/lib_syslog.c</FilePath>
-            </File>
-            <File>
-              <FileName>lib_lowsyslog.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>../../../../../libc/syslog/lib_lowsyslog.c</FilePath>
-            </File>
             <File>
               <FileName>lib_setlogmask.c</FileName>
               <FileType>1</FileType>
diff --git a/configs/stm32_tiny/README.txt b/configs/stm32_tiny/README.txt
index dad96a34f87..29a8cbb43ff 100644
--- a/configs/stm32_tiny/README.txt
+++ b/configs/stm32_tiny/README.txt
@@ -617,7 +617,7 @@ Where <subdir> is one of the following:
 
         - /dev/console still exists and still refers to the serial port. So
           you can still use certain kinds of debug output (see include/debug.h, all
-          of the interfaces based on lowsyslog will work in this configuration).
+          of the debug output from interrupt handlers will be lost.
 
         - But don't enable USB debug output!  Since USB is console is used for
           USB debug output and you are using a USB console, there will be
diff --git a/configs/stm32f429i-disco/README.txt b/configs/stm32f429i-disco/README.txt
index c803960bf5a..d14134e0680 100644
--- a/configs/stm32f429i-disco/README.txt
+++ b/configs/stm32f429i-disco/README.txt
@@ -726,7 +726,7 @@ Where <subdir> is one of the following:
 
         - /dev/console still exists and still refers to the serial port. So
           you can still use certain kinds of debug output (see include/debug.h, all
-          of the interfaces based on lowsyslog will work in this configuration).
+          debug output from interrupt handlers will be lost.
 
         - But don't enable USB debug output!  Since USB is console is used for
           USB debug output and you are using a USB console, there will be
diff --git a/configs/stm32f429i-disco/ide/ltcd/uvision/libc.uvproj b/configs/stm32f429i-disco/ide/ltcd/uvision/libc.uvproj
index 9a501a0b517..f7340f2ce7f 100644
--- a/configs/stm32f429i-disco/ide/ltcd/uvision/libc.uvproj
+++ b/configs/stm32f429i-disco/ide/ltcd/uvision/libc.uvproj
@@ -1425,11 +1425,6 @@
               <FileType>1</FileType>
               <FilePath>../../../../../libc/syslog/lib_syslog.c</FilePath>
             </File>
-            <File>
-              <FileName>lib_lowsyslog.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>../../../../../libc/syslog/lib_lowsyslog.c</FilePath>
-            </File>
             <File>
               <FileName>lib_setlogmask.c</FileName>
               <FileType>1</FileType>
diff --git a/configs/stm32f4discovery/README.txt b/configs/stm32f4discovery/README.txt
index 5696b1dba2b..e0c912d1648 100644
--- a/configs/stm32f4discovery/README.txt
+++ b/configs/stm32f4discovery/README.txt
@@ -1652,7 +1652,7 @@ Where <subdir> is one of the following:
 
         - /dev/console still exists and still refers to the serial port. So
           you can still use certain kinds of debug output (see include/debug.h, all
-          of the interfaces based on lowsyslog will work in this configuration).
+          of the debug output from interrupt handlers will be lost.
 
         - But don't enable USB debug output!  Since USB is console is used for
           USB debug output and you are using a USB console, there will be
diff --git a/configs/stm32f4discovery/src/stm32_pmbuttons.c b/configs/stm32f4discovery/src/stm32_pmbuttons.c
index 0ca71c9dcde..cc1ccb549e7 100644
--- a/configs/stm32f4discovery/src/stm32_pmbuttons.c
+++ b/configs/stm32f4discovery/src/stm32_pmbuttons.c
@@ -142,9 +142,9 @@ void stm32_pm_buttons(void)
 
       if (oldhandler != NULL)
         {
-          lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
-                   "Button events may be lost or aliased!\n",
-                   oldhandler);
+          warn(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
+               "Button events may be lost or aliased!\n",
+               oldhandler);
         }
 #endif
 }
diff --git a/configs/stm32l476vg-disco/src/stm32_buttons.c b/configs/stm32l476vg-disco/src/stm32_buttons.c
index 6a49927e802..b113718c9a1 100644
--- a/configs/stm32l476vg-disco/src/stm32_buttons.c
+++ b/configs/stm32l476vg-disco/src/stm32_buttons.c
@@ -253,9 +253,9 @@ void board_button_initialize(void)
       xcpt_t oldhandler = board_button_irq(i, button_handler);
       if (oldhandler != NULL)
         {
-          lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
-                   "Button events may be lost or aliased!\n",
-                   oldhandler);
+          warn("WARNING: oldhandler:%p is not NULL!  "
+               "Button events may be lost or aliased!\n",
+               oldhandler);
         }
 #endif
 #endif
diff --git a/drivers/eeprom/spi_xx25xx.c b/drivers/eeprom/spi_xx25xx.c
index 67a38b97843..5ddf338b022 100644
--- a/drivers/eeprom/spi_xx25xx.c
+++ b/drivers/eeprom/spi_xx25xx.c
@@ -815,9 +815,9 @@ int ee25xx_initialize(FAR struct spi_dev_s *dev, FAR char *devname,
 
   eedev->readonly = !!readonly;
 
-  lowsyslog(LOG_NOTICE,
-            "EEPROM device %s, %d bytes, %d per page, addrlen %d, readonly %d\n",
-            devname, eedev->size, eedev->pgsize, eedev->addrlen, eedev->readonly);
+  info(LOG_NOTICE,
+       "EEPROM device %s, %d bytes, %d per page, addrlen %d, readonly %d\n",
+       devname, eedev->size, eedev->pgsize, eedev->addrlen, eedev->readonly);
 
   return register_driver(devname, &ee25xx_fops, 0666, eedev);
 }
diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
index bdb1b9d3547..32f1bb57561 100644
--- a/drivers/net/enc28j60.c
+++ b/drivers/net/enc28j60.c
@@ -195,13 +195,13 @@
 
 #ifdef CONFIG_ENC28J60_REGDEBUG
 #  define enc_wrdump(a,v) \
-   lowsyslog(LOG_DEBUG, "ENC28J60: %02x<-%02x\n", a, v);
+   syslog(LOG_DEBUG, "ENC28J60: %02x<-%02x\n", a, v);
 #  define enc_rddump(a,v) \
-   lowsyslog(LOG_DEBUG, "ENC28J60: %02x->%02x\n", a, v);
+   syslog(LOG_DEBUG, "ENC28J60: %02x->%02x\n", a, v);
 #  define enc_cmddump(c) \
-   lowsyslog(LOG_DEBUG, "ENC28J60: CMD: %02x\n", c);
+   syslog(LOG_DEBUG, "ENC28J60: CMD: %02x\n", c);
 #  define enc_bmdump(c,b,s) \
-   lowsyslog(LOG_DEBUG, "ENC28J60: CMD: %02x buffer: %p length: %d\n", c, b, s);
+   syslog(LOG_DEBUG, "ENC28J60: CMD: %02x buffer: %p length: %d\n", c, b, s);
 #else
 #  define enc_wrdump(a,v)
 #  define enc_rddump(a,v)
@@ -774,56 +774,56 @@ static int enc_waitbreg(FAR struct enc_driver_s *priv, uint8_t ctrlreg,
 #if 0 /* Sometimes useful */
 static void enc_rxdump(FAR struct enc_driver_s *priv)
 {
-  lowsyslog(LOG_DEBUG, "Rx Registers:\n");
-  lowsyslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
-            enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
-  lowsyslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x ECON2:    %02x\n",
-            enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1),
-            enc_rdgreg(priv, ENC_ECON2));
-  lowsyslog(LOG_DEBUG, "  ERXST:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXSTH), enc_rdbreg(priv, ENC_ERXSTL));
-  lowsyslog(LOG_DEBUG, "  ERXND:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXNDH), enc_rdbreg(priv, ENC_ERXNDL));
-  lowsyslog(LOG_DEBUG, "  ERXRDPT:  %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXRDPTH), enc_rdbreg(priv, ENC_ERXRDPTL));
-  lowsyslog(LOG_DEBUG, "  ERXFCON:  %02x EPKTCNT:  %02x\n",
-            enc_rdbreg(priv, ENC_ERXFCON), enc_rdbreg(priv, ENC_EPKTCNT));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3));
-  lowsyslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
-            enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
-  lowsyslog(LOG_DEBUG, "  MAADR:    %02x:%02x:%02x:%02x:%02x:%02x\n",
-            enc_rdbreg(priv, ENC_MAADR1), enc_rdbreg(priv, ENC_MAADR2),
-            enc_rdbreg(priv, ENC_MAADR3), enc_rdbreg(priv, ENC_MAADR4),
-            enc_rdbreg(priv, ENC_MAADR5), enc_rdbreg(priv, ENC_MAADR6));
+  syslog(LOG_DEBUG, "Rx Registers:\n");
+  syslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
+         enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
+  syslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x ECON2:    %02x\n",
+         enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1),
+         enc_rdgreg(priv, ENC_ECON2));
+  syslog(LOG_DEBUG, "  ERXST:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXSTH), enc_rdbreg(priv, ENC_ERXSTL));
+  syslog(LOG_DEBUG, "  ERXND:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXNDH), enc_rdbreg(priv, ENC_ERXNDL));
+  syslog(LOG_DEBUG, "  ERXRDPT:  %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXRDPTH), enc_rdbreg(priv, ENC_ERXRDPTL));
+  syslog(LOG_DEBUG, "  ERXFCON:  %02x EPKTCNT:  %02x\n",
+         enc_rdbreg(priv, ENC_ERXFCON), enc_rdbreg(priv, ENC_EPKTCNT));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3));
+  syslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
+         enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
+  syslog(LOG_DEBUG, "  MAADR:    %02x:%02x:%02x:%02x:%02x:%02x\n",
+         enc_rdbreg(priv, ENC_MAADR1), enc_rdbreg(priv, ENC_MAADR2),
+         enc_rdbreg(priv, ENC_MAADR3), enc_rdbreg(priv, ENC_MAADR4),
+         enc_rdbreg(priv, ENC_MAADR5), enc_rdbreg(priv, ENC_MAADR6));
 }
 #endif
 
 #if 0 /* Sometimes useful */
 static void enc_txdump(FAR struct enc_driver_s *priv)
 {
-  lowsyslog(LOG_DEBUG, "Tx Registers:\n");
-  lowsyslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
-            enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
-  lowsyslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x\n",
-            enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1));
-  lowsyslog(LOG_DEBUG, "  ETXST:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ETXSTH), enc_rdbreg(priv, ENC_ETXSTL));
-  lowsyslog(LOG_DEBUG, "  ETXND:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ETXNDH), enc_rdbreg(priv, ENC_ETXNDL));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
-            enc_rdbreg(priv, ENC_MACON4));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
-            enc_rdbreg(priv, ENC_MACON4));
-  lowsyslog(LOG_DEBUG, "  MABBIPG:  %02x MAIPG %02x %02x\n",
-            enc_rdbreg(priv, ENC_MABBIPG), enc_rdbreg(priv, ENC_MAIPGH),
-            enc_rdbreg(priv, ENC_MAIPGL));
-  lowsyslog(LOG_DEBUG, "  MACLCON1: %02x MACLCON2:   %02x\n",
-            enc_rdbreg(priv, ENC_MACLCON1), enc_rdbreg(priv, ENC_MACLCON2));
-  lowsyslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
-            enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
+  syslog(LOG_DEBUG, "Tx Registers:\n");
+  syslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
+         enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
+  syslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x\n",
+         enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1));
+  syslog(LOG_DEBUG, "  ETXST:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ETXSTH), enc_rdbreg(priv, ENC_ETXSTL));
+  syslog(LOG_DEBUG, "  ETXND:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ETXNDH), enc_rdbreg(priv, ENC_ETXNDL));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
+         enc_rdbreg(priv, ENC_MACON4));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
+         enc_rdbreg(priv, ENC_MACON4));
+  syslog(LOG_DEBUG, "  MABBIPG:  %02x MAIPG %02x %02x\n",
+         enc_rdbreg(priv, ENC_MABBIPG), enc_rdbreg(priv, ENC_MAIPGH),
+         enc_rdbreg(priv, ENC_MAIPGL));
+  syslog(LOG_DEBUG, "  MACLCON1: %02x MACLCON2:   %02x\n",
+         enc_rdbreg(priv, ENC_MACLCON1), enc_rdbreg(priv, ENC_MACLCON2));
+  syslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
+         enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
 }
 #endif
 
diff --git a/drivers/net/encx24j600.c b/drivers/net/encx24j600.c
index 02a24919018..9c763577aa4 100644
--- a/drivers/net/encx24j600.c
+++ b/drivers/net/encx24j600.c
@@ -187,17 +187,17 @@
 
 #ifdef CONFIG_ENCX24J600_REGDEBUG
 #  define enc_wrdump(a,v) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: %02x<-%04x\n", a, v);
+   syslog(LOG_DEBUG, "ENCX24J600: %02x<-%04x\n", a, v);
 #  define enc_rddump(a,v) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: %02x->%04x\n", a, v);
+   syslog(LOG_DEBUG, "ENCX24J600: %02x->%04x\n", a, v);
 #  define enc_bfsdump(a,m) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: %02x|=%04x\n", a, m);
+   syslog(LOG_DEBUG, "ENCX24J600: %02x|=%04x\n", a, m);
 #  define enc_bfcdump(a,m) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: %02x&=~%04x\n", a, m);
+   syslog(LOG_DEBUG, "ENCX24J600: %02x&=~%04x\n", a, m);
 #  define enc_cmddump(c) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: CMD: %02x\n", c);
+   syslog(LOG_DEBUG, "ENCX24J600: CMD: %02x\n", c);
 #  define enc_bmdump(c,b,s) \
-   lowsyslog(LOG_DEBUG, "ENCX24J600: CMD: %02x buffer: %p length: %d\n", c, b, s);
+   syslog(LOG_DEBUG, "ENCX24J600: CMD: %02x buffer: %p length: %d\n", c, b, s);
 #else
 #  define enc_wrdump(a,v)
 #  define enc_rddump(a,v)
@@ -764,56 +764,56 @@ static void enc_bfc(FAR struct enc_driver_s *priv, uint16_t ctrlreg,
 #if 0 /* Sometimes useful */
 static void enc_rxdump(FAR struct enc_driver_s *priv)
 {
-  lowsyslog(LOG_DEBUG, "Rx Registers:\n");
-  lowsyslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
-            enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
-  lowsyslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x ECON2:    %02x\n",
-            enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1),
-            enc_rdgreg(priv, ENC_ECON2));
-  lowsyslog(LOG_DEBUG, "  ERXST:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXSTH), enc_rdbreg(priv, ENC_ERXSTL));
-  lowsyslog(LOG_DEBUG, "  ERXND:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXNDH), enc_rdbreg(priv, ENC_ERXNDL));
-  lowsyslog(LOG_DEBUG, "  ERXRDPT:  %02x %02x\n",
-            enc_rdbreg(priv, ENC_ERXRDPTH), enc_rdbreg(priv, ENC_ERXRDPTL));
-  lowsyslog(LOG_DEBUG, "  ERXFCON:  %02x EPKTCNT:  %02x\n",
-            enc_rdbreg(priv, ENC_ERXFCON), enc_rdbreg(priv, ENC_EPKTCNT));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3));
-  lowsyslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
-            enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
-  lowsyslog(LOG_DEBUG, "  MAADR:    %02x:%02x:%02x:%02x:%02x:%02x\n",
-            enc_rdbreg(priv, ENC_MAADR1), enc_rdbreg(priv, ENC_MAADR2),
-            enc_rdbreg(priv, ENC_MAADR3), enc_rdbreg(priv, ENC_MAADR4),
-            enc_rdbreg(priv, ENC_MAADR5), enc_rdbreg(priv, ENC_MAADR6));
+  syslog(LOG_DEBUG, "Rx Registers:\n");
+  syslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
+         enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
+  syslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x ECON2:    %02x\n",
+         enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1),
+         enc_rdgreg(priv, ENC_ECON2));
+  syslog(LOG_DEBUG, "  ERXST:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXSTH), enc_rdbreg(priv, ENC_ERXSTL));
+  syslog(LOG_DEBUG, "  ERXND:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXNDH), enc_rdbreg(priv, ENC_ERXNDL));
+  syslog(LOG_DEBUG, "  ERXRDPT:  %02x %02x\n",
+         enc_rdbreg(priv, ENC_ERXRDPTH), enc_rdbreg(priv, ENC_ERXRDPTL));
+  syslog(LOG_DEBUG, "  ERXFCON:  %02x EPKTCNT:  %02x\n",
+         enc_rdbreg(priv, ENC_ERXFCON), enc_rdbreg(priv, ENC_EPKTCNT));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3));
+  syslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
+         enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
+  syslog(LOG_DEBUG, "  MAADR:    %02x:%02x:%02x:%02x:%02x:%02x\n",
+         enc_rdbreg(priv, ENC_MAADR1), enc_rdbreg(priv, ENC_MAADR2),
+         enc_rdbreg(priv, ENC_MAADR3), enc_rdbreg(priv, ENC_MAADR4),
+         enc_rdbreg(priv, ENC_MAADR5), enc_rdbreg(priv, ENC_MAADR6));
 }
 #endif
 
 #if 0 /* Sometimes useful */
 static void enc_txdump(FAR struct enc_driver_s *priv)
 {
-  lowsyslog(LOG_DEBUG, "Tx Registers:\n");
-  lowsyslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
-            enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
-  lowsyslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x\n",
-            enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1));
-  lowsyslog(LOG_DEBUG, "  ETXST:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ETXSTH), enc_rdbreg(priv, ENC_ETXSTL));
-  lowsyslog(LOG_DEBUG, "  ETXND:    %02x %02x\n",
-            enc_rdbreg(priv, ENC_ETXNDH), enc_rdbreg(priv, ENC_ETXNDL));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
-            enc_rdbreg(priv, ENC_MACON4));
-  lowsyslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
-            enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
-            enc_rdbreg(priv, ENC_MACON4));
-  lowsyslog(LOG_DEBUG, "  MABBIPG:  %02x MAIPG %02x %02x\n",
-            enc_rdbreg(priv, ENC_MABBIPG), enc_rdbreg(priv, ENC_MAIPGH),
-            enc_rdbreg(priv, ENC_MAIPGL));
-  lowsyslog(LOG_DEBUG, "  MACLCON1: %02x MACLCON2:   %02x\n",
-            enc_rdbreg(priv, ENC_MACLCON1), enc_rdbreg(priv, ENC_MACLCON2));
-  lowsyslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
-            enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
+  syslog(LOG_DEBUG, "Tx Registers:\n");
+  syslog(LOG_DEBUG, "  EIE:      %02x EIR:      %02x\n",
+         enc_rdgreg(priv, ENC_EIE), enc_rdgreg(priv, ENC_EIR));
+  syslog(LOG_DEBUG, "  ESTAT:    %02x ECON1:    %02x\n",
+         enc_rdgreg(priv, ENC_ESTAT), enc_rdgreg(priv, ENC_ECON1));
+  syslog(LOG_DEBUG, "  ETXST:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ETXSTH), enc_rdbreg(priv, ENC_ETXSTL));
+  syslog(LOG_DEBUG, "  ETXND:    %02x %02x\n",
+         enc_rdbreg(priv, ENC_ETXNDH), enc_rdbreg(priv, ENC_ETXNDL));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
+         enc_rdbreg(priv, ENC_MACON4));
+  syslog(LOG_DEBUG, "  MACON1:   %02x MACON3:   %02x MACON4:   %02x\n",
+         enc_rdbreg(priv, ENC_MACON1), enc_rdbreg(priv, ENC_MACON3),
+         enc_rdbreg(priv, ENC_MACON4));
+  syslog(LOG_DEBUG, "  MABBIPG:  %02x MAIPG %02x %02x\n",
+         enc_rdbreg(priv, ENC_MABBIPG), enc_rdbreg(priv, ENC_MAIPGH),
+         enc_rdbreg(priv, ENC_MAIPGL));
+  syslog(LOG_DEBUG, "  MACLCON1: %02x MACLCON2:   %02x\n",
+         enc_rdbreg(priv, ENC_MACLCON1), enc_rdbreg(priv, ENC_MACLCON2));
+  syslog(LOG_DEBUG, "  MAMXFL:   %02x %02x\n",
+         enc_rdbreg(priv, ENC_MAMXFLH), enc_rdbreg(priv, ENC_MAMXFLL));
 }
 #endif
 
diff --git a/drivers/syslog/Make.defs b/drivers/syslog/Make.defs
index c273a289383..86d36151b4d 100644
--- a/drivers/syslog/Make.defs
+++ b/drivers/syslog/Make.defs
@@ -37,7 +37,7 @@
 ############################################################################
 # Include SYSLOG Infrastructure
 
-CSRCS += vsyslog.c vlowsyslog.c syslog_stream.c syslog_channel.c
+CSRCS += vsyslog.c syslog_stream.c syslog_channel.c
 
 ifeq ($(CONFIG_SYSLOG_INTBUFFER),y)
   CSRCS += syslog_intbuffer.c
diff --git a/drivers/syslog/ramlog.c b/drivers/syslog/ramlog.c
index a725d238d40..6044b7157b5 100644
--- a/drivers/syslog/ramlog.c
+++ b/drivers/syslog/ramlog.c
@@ -765,12 +765,7 @@ int ramlog_syslog_channel(void)
  * Name: ramlog_putc
  *
  * Description:
- *   This is the low-level system logging interface.  The debugging/syslogging
- *   interfaces are syslog() and lowsyslog().  The difference is that
- *   the syslog() internface writes to syslog device (usually fd=1, stdout)
- *   whereas lowsyslog() uses a lower level interface that works from
- *   interrupt handlers.  This function is a a low-level interface used to
- *   implement lowsyslog() when CONFIG_RAMLOG_SYSLOG=y.
+ *   This is the low-level system logging interface.
  *
  ****************************************************************************/
 
diff --git a/drivers/syslog/vlowsyslog.c b/drivers/syslog/vlowsyslog.c
deleted file mode 100644
index 7e444748822..00000000000
--- a/drivers/syslog/vlowsyslog.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/****************************************************************************
- * drivers/syslog/vlowsyslog.c
- *
- *   Copyright (C) 2007-2009, 2011-2012, 2016 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <stdio.h>
-#include <syslog.h>
-
-#include <nuttx/streams.h>
-#include <nuttx/syslog/syslog.h>
-
-#ifdef CONFIG_ARCH_LOWPUTC
-/* The low-level SYSLOG functions can be used only if we have access to
- * either the low-level serial interface, up_putc(), and to syslog_putc()
- */
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: _lowvsyslog
- *
- * Description:
- *   _lowvsyslog() handles the system logging system calls. It is functionally
- *   equivalent to vlowsyslog() except that the pre-process priority filtering
- *   has already been performed and, hence, there is no priority argument.
- *
- *   NOTE:  The va_list parameter is passed by reference.  That is because
- *   the va_list is a structure in some compilers and passing of structures
- *   in the NuttX sycalls does not work.
- *
- ****************************************************************************/
-
-int _lowvsyslog(FAR const IPTR char *fmt, FAR va_list *ap)
-{
-  struct lib_outstream_s stream;
-
-  /* Wrap the stdout in a stream object and let lib_vsprintf do the work. */
-
-  syslogstream((FAR struct lib_outstream_s *)&stream);
-  return lib_vsprintf((FAR struct lib_outstream_s *)&stream, fmt, *ap);
-}
-
-#endif /* CONFIG_ARCH_LOWPUTC */
diff --git a/drivers/syslog/vsyslog.c b/drivers/syslog/vsyslog.c
index 8d51c4ad5cd..ee87a1019e1 100644
--- a/drivers/syslog/vsyslog.c
+++ b/drivers/syslog/vsyslog.c
@@ -57,7 +57,7 @@
  *
  * Description:
  *   _vsyslog() handles the system logging system calls. It is functionally
- *   equivalent to vsyslog() except that the pre-process priority filtering
+ *   equivalent to vsyslog() except that the per-process priority filtering
  *   has already been performed and, hence, there is no priority argument.
  *
  *   NOTE:  The va_list parameter is passed by reference.  That is because
diff --git a/drivers/usbdev/usbdev_trace.c b/drivers/usbdev/usbdev_trace.c
index 3e9831562e2..b532565e0e0 100644
--- a/drivers/usbdev/usbdev_trace.c
+++ b/drivers/usbdev/usbdev_trace.c
@@ -190,7 +190,7 @@ void usbtrace(uint16_t event, uint16_t value)
             }
         }
 #else
-      /* Just print the data using lowsyslog */
+      /* Just print the data using syslog */
 
       usbtrace_trprintf(usbtrace_syslog, event, value);
 #endif
diff --git a/drivers/usbdev/usbmsc_scsi.c b/drivers/usbdev/usbmsc_scsi.c
index 66f2b586b9c..fd9e55cb6b4 100644
--- a/drivers/usbdev/usbmsc_scsi.c
+++ b/drivers/usbdev/usbmsc_scsi.c
@@ -200,13 +200,13 @@ static void usbmsc_dumpdata(const char *msg, const uint8_t *buf, int buflen)
 {
   int i;
 
-  lowsyslog(LOG_DEBUG, "%s:", msg);
+  syslog(LOG_DEBUG, "%s:", msg);
   for (i = 0; i < buflen; i++)
     {
-      lowsyslog(LOG_DEBUG, " %02x", buf[i]);
+      syslog(LOG_DEBUG, " %02x", buf[i]);
     }
 
-  lowsyslog(LOG_DEBUG, "\n");
+  syslog(LOG_DEBUG, "\n");
 }
 #endif
 
diff --git a/drivers/wireless/cc3000/cc3000.c b/drivers/wireless/cc3000/cc3000.c
index 4d08431d9e6..2e17ab636a7 100644
--- a/drivers/wireless/cc3000/cc3000.c
+++ b/drivers/wireless/cc3000/cc3000.c
@@ -676,7 +676,7 @@ static void * cc3000_worker(FAR void *arg)
 
                     if (data_to_recv >= priv->rx_buffer_max_len)
                       {
-                        lowsyslog(LOG_INFO, "data_to_recv %d", data_to_recv);
+                        ninfo("data_to_recv %d", data_to_recv);
                       }
 
                     DEBUGASSERT(data_to_recv < priv->rx_buffer_max_len);
diff --git a/include/debug.h b/include/debug.h
index 9994b3a4217..06c92f99d51 100644
--- a/include/debug.h
+++ b/include/debug.h
@@ -133,16 +133,9 @@
 #ifndef __arch_syslog
 #  define __arch_syslog syslog
 #endif
-#ifndef __arch_lowsyslog
-#  define __arch_lowsyslog lowsyslog
-#endif
 
-#ifdef CONFIG_ARCH_LOWPUTC
-#  define _alert(format, ...) \
-   __arch_lowsyslog(LOG_EMERG, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
-# else
-#  define _alert(x...)
-# endif
+#define _alert(format, ...) \
+   __arch_syslog(LOG_EMERG, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
 
 #ifdef CONFIG_DEBUG_ERROR
 #  define  _err(format, ...) \
@@ -150,7 +143,7 @@
 
 # ifdef CONFIG_ARCH_LOWPUTC
 #  define  _llerr(format, ...) \
-   __arch_lowsyslog(LOG_ERR, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
+   __arch_syslog(LOG_ERR, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
 # else
 #  define  _llerr(x...)
 # endif
@@ -165,7 +158,7 @@
 
 #  ifdef CONFIG_ARCH_LOWPUTC
 #    define _llwarn(format, ...) \
-     __arch_lowsyslog(LOG_WARNING, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
+     __arch_syslog(LOG_WARNING, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
 #  else
 #    define _llwarn(x...)
 #  endif
@@ -180,7 +173,7 @@
 
 #  ifdef CONFIG_ARCH_LOWPUTC
 #    define _llinfo(format, ...) \
-     __arch_lowsyslog(LOG_INFO, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
+     __arch_syslog(LOG_INFO, EXTRA_FMT format EXTRA_ARG, ##__VA_ARGS__)
 #  else
 #    define _llinfo(x...)
 #  endif
diff --git a/include/nuttx/syslog/ramlog.h b/include/nuttx/syslog/ramlog.h
index defa0c5e415..70ec26f316e 100644
--- a/include/nuttx/syslog/ramlog.h
+++ b/include/nuttx/syslog/ramlog.h
@@ -182,12 +182,7 @@ int ramlog_syslog_channel(void);
  * Name: ramlog_putc
  *
  * Description:
- *   This is the low-level system logging interface.  The debugging/syslogging
- *   interfaces are syslog() and lowsyslog().  The difference is that
- *   the syslog() internface writes to syslog device (usually fd=1, stdout)
- *   whereas lowsyslog() uses a lower level interface that works from
- *   interrupt handlers.  This function is a a low-level interface used to
- *   implement lowsyslog() when CONFIG_RAMLOG_SYSLOG=y.
+ *   This is the low-level system logging interface.
  *
  ****************************************************************************/
 
diff --git a/include/nuttx/syslog/syslog.h b/include/nuttx/syslog/syslog.h
index 1a641c18d50..b0d6694b596 100644
--- a/include/nuttx/syslog/syslog.h
+++ b/include/nuttx/syslog/syslog.h
@@ -215,11 +215,11 @@ int syslog_flush(void);
 #endif
 
 /****************************************************************************
- * Name: _vsyslog and _lowvsyslog
+ * Name: _vsyslog
  *
  * Description:
  *   _vsyslog() handles the system logging system calls. It is functionally
- *   equivalent to vsyslog() except that the pre-process priority filtering
+ *   equivalent to vsyslog() except that the per-process priority filtering
  *   has already been performed and, hence, there is no priority argument.
  *
  *   NOTE:  The va_list parameter is passed by reference.  That is because
@@ -229,7 +229,6 @@ int syslog_flush(void);
  ****************************************************************************/
 
 int _vsyslog(FAR const IPTR char *src, FAR va_list *ap);
-int _lowvsyslog(FAR const IPTR char *src, FAR va_list *ap);
 
 #undef EXTERN
 #ifdef __cplusplus
diff --git a/include/syslog.h b/include/syslog.h
index efc62ac599d..075a42bfe82 100644
--- a/include/syslog.h
+++ b/include/syslog.h
@@ -163,48 +163,6 @@ void closelog(void);
 int syslog(int priority, FAR const IPTR char *format, ...);
 int vsyslog(int priority, FAR const IPTR char *src, va_list ap);
 
-/****************************************************************************
- * Name: lowsyslog and lowvsyslog
- *
- * Description:
- *   syslog() generates a log message. The priority argument is formed by
- *   ORing the facility and the level values (see include/syslog.h). The
- *   remaining arguments are a format, as in printf and any arguments to the
- *   format.
- *
- *   This is a non-standard, low-level system logging interface.  The
- *   difference between syslog() and lowsyslog() is that the syslog()
- *   interface writes to the syslog device (usually fd=1, stdout) whereas
- *   lowsyslog() uses a lower level interface that works even from interrupt
- *   handlers.
- *
- *   If the platform cannot support lowsyslog, then we will substitute the
- *   standard syslogging functions.  These will, however, probably cause
- *   problems if called from interrupt handlers, depending upon the nature of
- *   the underlying syslog device.
- *
- *   The function lowvsyslog() performs the same task as lowsyslog() with
- *   the difference that it takes a set of arguments which have been
- *   obtained using the stdarg variable argument list macros.
- *
- ****************************************************************************/
-
-#ifdef CONFIG_ARCH_LOWPUTC
-
-int lowsyslog(int priority, FAR const IPTR char *format, ...);
-int lowvsyslog(int priority, FAR const IPTR char *format, va_list ap);
-
-#else
-
-#  ifdef CONFIG_CPP_HAVE_VARARGS
-#    define lowsyslog(p,f,...) syslog(p,f,##__VA_ARGS__)
-#  else
-#    define lowsyslog (void)
-#  endif
-#  define lowvsyslog(p,f,a) vsyslog(p,f,a)
-
-#endif
-
 /****************************************************************************
  * Name: setlogmask
  *
diff --git a/libc/libc.csv b/libc/libc.csv
index 2c9eabe0b95..cb673d23adf 100644
--- a/libc/libc.csv
+++ b/libc/libc.csv
@@ -67,8 +67,6 @@
 "_llerr","debug.h","!defined(CONFIG_CPP_HAVE_VARARGS) && defined(CONFIG_DEBUG_ERROR) && defined(CONFIG_ARCH_LOWPUTC)","int","const char *","..."
 "_llinfo","debug.h","!defined(CONFIG_CPP_HAVE_VARARGS) && defined(CONFIG_DEBUG_INFO) && defined(CONFIG_ARCH_LOWPUTC)","int","const char *","..."
 "_llwarn","debug.h","!defined(CONFIG_CPP_HAVE_VARARGS) && defined(CONFIG_DEBUG_WARN) && defined(CONFIG_ARCH_LOWPUTC)","int","const char *","..."
-"lowsyslog","syslog.h","","int","int","FAR const char *","..."
-"lowvsyslog","syslog.h","","int","int","FAR const char *","va_list"
 "match","nuttx/regex.h","","int","const char *","const char *"
 "memccpy","string.h","","FAR void","FAR void *","FAR const void *","int c","size_t"
 "memchr","string.h","","FAR void","FAR const void *","int c","size_t"
diff --git a/libc/misc/lib_dumpbuffer.c b/libc/misc/lib_dumpbuffer.c
index 23e7e617b8f..b1024d00b73 100644
--- a/libc/misc/lib_dumpbuffer.c
+++ b/libc/misc/lib_dumpbuffer.c
@@ -66,52 +66,52 @@ void lib_dumpbuffer(FAR const char *msg, FAR const uint8_t *buffer,
   unsigned int j;
   unsigned int k;
 
-  lowsyslog(LOG_INFO, "%s (%p):\n", msg, buffer);
+  syslog(LOG_INFO, "%s (%p):\n", msg, buffer);
   for (i = 0; i < buflen; i += 32)
     {
-      lowsyslog(LOG_INFO, "%04x: ", i);
+      syslog(LOG_INFO, "%04x: ", i);
       for (j = 0; j < 32; j++)
         {
           k = i + j;
 
           if (j == 16)
             {
-              lowsyslog(LOG_INFO, " ");
+              syslog(LOG_INFO, " ");
             }
 
           if (k < buflen)
             {
-              lowsyslog(LOG_INFO, "%02x", buffer[k]);
+              syslog(LOG_INFO, "%02x", buffer[k]);
             }
           else
             {
-              lowsyslog(LOG_INFO, "  ");
+              syslog(LOG_INFO, "  ");
             }
         }
 
-      lowsyslog(LOG_INFO, " ");
+      syslog(LOG_INFO, " ");
       for (j = 0; j < 32; j++)
         {
          k = i + j;
 
           if (j == 16)
             {
-              lowsyslog(LOG_INFO, " ");
+              syslog(LOG_INFO, " ");
             }
 
           if (k < buflen)
             {
               if (buffer[k] >= 0x20 && buffer[k] < 0x7f)
                 {
-                  lowsyslog(LOG_INFO, "%c", buffer[k]);
+                  syslog(LOG_INFO, "%c", buffer[k]);
                 }
               else
                 {
-                  lowsyslog(LOG_INFO, ".");
+                  syslog(LOG_INFO, ".");
                 }
             }
         }
 
-      lowsyslog(LOG_INFO, "\n");
+      syslog(LOG_INFO, "\n");
    }
 }
diff --git a/libc/syslog/Make.defs b/libc/syslog/Make.defs
index 907071a86bb..b1d6b093043 100644
--- a/libc/syslog/Make.defs
+++ b/libc/syslog/Make.defs
@@ -35,7 +35,7 @@
 
 # Add the internal C files to the build
 
-CSRCS += lib_syslog.c lib_lowsyslog.c lib_setlogmask.c
+CSRCS += lib_syslog.c lib_setlogmask.c
 
 # Add the syslog directory to the build
 
diff --git a/libc/syslog/lib_lowsyslog.c b/libc/syslog/lib_lowsyslog.c
deleted file mode 100644
index 4f823911c67..00000000000
--- a/libc/syslog/lib_lowsyslog.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/****************************************************************************
- * lib/syslog/lib_lowsyslog.c
- *
- *   Copyright (C) 2007-2009, 2011-2012, 2016 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <syslog.h>
-
-#include <nuttx/syslog/syslog.h>
-
-#include "syslog/syslog.h"
-
-#ifdef CONFIG_ARCH_LOWPUTC
-/* The low-level SYSLOG functions can be used only if we have access to
- * either the low-level serial interface, up_putc().
- */
-
-#if defined(CONFIG_BUILD_FLAT) || defined (__KERNEL__)
-/* The low-level serial interface, up_putc(), is only available in the FLAT
- * build or during the kernel pass of the protected or kernel two pass
- * builds.
- */
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: lowvsyslog
- *
- * Description:
- *   The function lowvsyslog() performs the same task as lowsyslog() with
- *   the difference that it takes a set of arguments which have been
- *   obtained using the stdarg variable argument list macros.
- *
- ****************************************************************************/
-
-int lowvsyslog(int priority, FAR const IPTR char *fmt, va_list ap)
-{
-  int ret = 0;
-
-  /* Check if this priority is enabled */
-
-  if ((g_syslog_mask & LOG_MASK(priority)) != 0)
-    {
-      /* Perform the _lowvsyslog system call.
-       *
-       * NOTE:  The va_list parameter is passed by reference.  That is
-       * because the va_list is a structure in some compilers and passing
-       * of structures in the NuttX sycalls does not work.
-       */
-
-      ret = _lowvsyslog(fmt, &ap);
-    }
-
-  return ret;
-}
-
-/****************************************************************************
- * Name: lowsyslog
- *
- * Description:
- *   syslog() generates a log message. The priority argument is formed by
- *   ORing the facility and the level values (see include/syslog.h). The
- *   remaining arguments are a format, as in printf and any arguments to the
- *   format.
- *
- *   This is a non-standard, low-level system logging interface.  The
- *   difference between syslog() and lowsyslog() is that the syslog()
- *   interface writes to the syslog device (usually fd=1, stdout) whereas
- *   lowsyslog() uses a lower level interface that works even from interrupt
- *   handlers.
- *
- ****************************************************************************/
-
-int lowsyslog(int priority, FAR const IPTR char *fmt, ...)
-{
-  va_list ap;
-  int ret;
-
-  /* Let lowvsyslog do the work */
-
-  va_start(ap, fmt);
-  ret = lowvsyslog(priority, fmt, ap);
-  va_end(ap);
-
-  return ret;
-}
-
-#endif /* CONFIG_BUILD_FLAT) || __KERNEL__ */
-#endif /* CONFIG_ARCH_LOWPUTC */
diff --git a/net/iob/iob_dump.c b/net/iob/iob_dump.c
index d8dab7b684d..2be0198a5bd 100644
--- a/net/iob/iob_dump.c
+++ b/net/iob/iob_dump.c
@@ -77,7 +77,7 @@ void iob_dump(FAR const char *msg, FAR struct iob_s *iob, unsigned int len,
   unsigned int cndx;
 
   head = iob;
-  lowsyslog(LOG_DEBUG, "%s: iob=%p pktlen=%d\n", msg, head, head->io_pktlen);
+  syslog(LOG_DEBUG, "%s: iob=%p pktlen=%d\n", msg, head, head->io_pktlen);
 
   /* Check if the offset is beyond the data in the I/O buffer chain */
 
@@ -92,8 +92,8 @@ void iob_dump(FAR const char *msg, FAR struct iob_s *iob, unsigned int len,
 
   for (; iob; iob = iob->io_flink)
     {
-      lowsyslog(LOG_DEBUG, "  iob=%p len=%d offset=%d\n",
-                iob, iob->io_len, iob->io_offset);
+      syslog(LOG_DEBUG, "  iob=%p len=%d offset=%d\n",
+             iob, iob->io_len, iob->io_offset);
     }
 
   /* Get the amount of data to be displayed, limited by the amount that we
@@ -117,47 +117,47 @@ void iob_dump(FAR const char *msg, FAR struct iob_s *iob, unsigned int len,
 
       if (nbytes > 0)
         {
-          lowsyslog(LOG_DEBUG, "  %04x: ", offset);
+          syslog(LOG_DEBUG, "  %04x: ", offset);
 
           for (cndx = 0; cndx < 32; cndx++)
             {
               if (cndx == 16)
                 {
-                  lowsyslog(LOG_DEBUG, " ");
+                  syslog(LOG_DEBUG, " ");
                 }
 
               if ((lndx + cndx) < len)
                 {
-                  lowsyslog(LOG_DEBUG, "%02x", data[cndx]);
+                  syslog(LOG_DEBUG, "%02x", data[cndx]);
                 }
               else
                 {
-                  lowsyslog(LOG_DEBUG, "  ");
+                  syslog(LOG_DEBUG, "  ");
                 }
             }
 
-          lowsyslog(LOG_DEBUG, " ");
+          syslog(LOG_DEBUG, " ");
           for (cndx = 0; cndx < 32; cndx++)
             {
               if (cndx == 16)
                 {
-                  lowsyslog(LOG_DEBUG, " ");
+                  syslog(LOG_DEBUG, " ");
                 }
 
               if ((lndx + cndx) < len)
                 {
                   if (data[cndx] >= 0x20 && data[cndx] < 0x7f)
                     {
-                      lowsyslog(LOG_DEBUG, "%c", data[cndx]);
+                      syslog(LOG_DEBUG, "%c", data[cndx]);
                     }
                   else
                     {
-                      lowsyslog(LOG_DEBUG, ".");
+                      syslog(LOG_DEBUG, ".");
                     }
                 }
             }
 
-          lowsyslog(LOG_DEBUG, "\n");
+          syslog(LOG_DEBUG, "\n");
         }
     }
 }
diff --git a/net/tcp/tcp_wrbuffer_dump.c b/net/tcp/tcp_wrbuffer_dump.c
index 2155a3b4751..6d1fbf85f6b 100644
--- a/net/tcp/tcp_wrbuffer_dump.c
+++ b/net/tcp/tcp_wrbuffer_dump.c
@@ -63,8 +63,8 @@
 void tcp_wrbuffer_dump(FAR const char *msg, FAR struct tcp_wrbuffer_s *wrb,
                        unsigned int len, unsigned int offset)
 {
-  lowsyslog(LOG_DEBUG, "%s: wrb=%p segno=%d sent=%d nrtx=%d\n",
-            msg, wrb, WRB_SEQNO(wrb), WRB_SENT(wrb), WRB_NRTX(wrb));
+  syslog(LOG_DEBUG, "%s: wrb=%p segno=%d sent=%d nrtx=%d\n",
+         msg, wrb, WRB_SEQNO(wrb), WRB_SENT(wrb), WRB_NRTX(wrb));
   iob_dump("I/O Buffer Chain", WRB_IOB(wrb), len, offset);
 }