reverting semaphore lock changes from sources (r41ccd6d221da, rb28756e5ba29)

semaphore locks have much higher overhead than initially presented
in the "Semaphores in Plan9" paper. until the reason for it has been
found out i will revert the changes.

1 files changed, 7 insertions, 0 deletions

diff --git a/sys/src/libc/68000/cycles.c b/sys/src/libc/68000/cycles.c
new file mode 100644
index 000000000..9bad3a989
--- /dev/null
+++ b/sys/src/libc/68000/cycles.c
@@ -0,0 +1,7 @@
+#include <u.h>
+#include <libc.h>
+
+void	cycles(uvlong*u)
+{
+	*u = 0LL;
+}