make dkprintf() evaluate its parameters always

Parameters of dkprintf() should be evaluated even if dkprintf() is
disabled.  Because this enables to find expression of parameter obsolete
and to avoid unnecessary compiler warnings such as "unused variable".

kernel/devobj.c

@@ -33,7 +33,7 @@
 #include <string.h>
 #include <syscall.h>
 
-#define	dkprintf(...)
+#define	dkprintf(...)	do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 
 struct devobj {

kernel/fileobj.c

@@ -26,7 +26,7 @@
 #include <string.h>
 #include <syscall.h>
 
-#define	dkprintf(...)
+#define	dkprintf(...)	do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 
 static ihk_spinlock_t fileobj_list_lock = SPIN_LOCK_UNLOCKED;

kernel/futex.c

@@ -76,7 +76,7 @@
 #ifdef DEBUG_PRINT_FUTEX
 #define dkprintf kprintf
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #endif
 
 int futex_cmpxchg_enabled;

kernel/host.c

@@ -34,7 +34,7 @@
 #ifdef DEBUG_PRINT_HOST
 #define dkprintf kprintf
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #endif
 
 void check_mapping_for_proc(struct process *proc, unsigned long addr)

kernel/init.c

@@ -40,7 +40,7 @@
 #ifdef DEBUG_PRINT_INIT
 #define dkprintf kprintf
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #endif
 
 int osnum = 0;

kernel/listeners.c

@@ -24,7 +24,7 @@
 #define	dkprintf(...)	kprintf(__VA_ARGS__)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 #else
-#define dkprintf(...)
+#define dkprintf(...)	do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 #endif
 

kernel/mem.c

@@ -44,7 +44,7 @@
 #define	dkprintf(...)	kprintf(__VA_ARGS__)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 #else
-#define dkprintf(...)
+#define dkprintf(...)	do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define	ekprintf(...)	kprintf(__VA_ARGS__)
 #endif
 

kernel/process.c

@@ -38,7 +38,7 @@
 #define dkprintf(...) kprintf(__VA_ARGS__)
 #define ekprintf(...) kprintf(__VA_ARGS__)
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define ekprintf(...) kprintf(__VA_ARGS__)
 #endif
 

kernel/syscall.c

@@ -59,7 +59,7 @@
 #define	dkprintf(...) kprintf(__VA_ARGS__)
 #define	ekprintf(...) kprintf(__VA_ARGS__)
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #define	ekprintf(...) kprintf(__VA_ARGS__)
 #endif
 

kernel/timer.c

@@ -38,7 +38,7 @@
 #ifdef DEBUG_PRINT_TIMER
 #define dkprintf kprintf
 #else
-#define dkprintf(...)
+#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
 #endif
 
 #define LOOP_TIMEOUT 10