Changeset c05a50f in mainline for kernel/generic/src/console/console.c

Timestamp:

2008-06-06T23:17:16Z (17 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

8d62052

Parents:

1c03c17

Message:

rename SYS_IO to SYS_KLOG
do not notify uspace klog with every single character, introduce some latency

File:

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

kernel/generic/src/console/console.c

@@ -50 +50 @@
 
 #define KLOG_SIZE PAGE_SIZE
+#define KLOG_LATENCY 8
 
 /**< Kernel log cyclic buffer */
@@ -276 +277 @@
                 klog_uspace++;
         
+        /* Check notify uspace to update */
+        bool update;
+        if ((klog_uspace > KLOG_LATENCY) || (c == '\n'))
+                update = true;
+        else
+                update = false;
+        
         spinlock_unlock(&klog_lock);
         
-        klog_update();
+        if (update)
+                klog_update();
 }