Changeset 5b303ba in mainline for kernel/generic/src/printf/vprintf.c

Timestamp:

2007-04-07T17:57:07Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

3dbe2d1f

Parents:

be66dee

Message:

use spinlock only on console output, not other print functions
cleanup

File:

• kernel/generic/src/printf/vprintf.c (modified) (2 diffs)

kernel/generic/src/printf/vprintf.c

@@ -36 +36 @@
 #include <printf/printf_core.h>
 #include <putchar.h>
+#include <synch/spinlock.h>
+#include <arch/asm.h>
+
+SPINLOCK_INITIALIZE(printf_lock);                       /**< vprintf spinlock */
 
 static int vprintf_write(const char *str, size_t count, void *unused)
@@ -56 +60 @@
 {
         struct printf_spec ps = {(int(*)(void *, size_t, void *)) vprintf_write, NULL};
-        return printf_core(fmt, &ps, ap);
-
+        
+        int irqpri = interrupts_disable();
+        spinlock_lock(&printf_lock);
+        
+        int ret = printf_core(fmt, &ps, ap);
+        
+        spinlock_unlock(&printf_lock);
+        interrupts_restore(irqpri);
+        
+        return ret;
 }