On 02/18/2014 02:33 AM, Peter Zijlstra wrote:
On Mon, Feb 17, 2014 at 03:41:22PM -0500, Waiman Long wrote:
+#define _QCODE(lock) (atomic_read(&(lock)->qlcode)>> _QCODE_OFFSET)
+#define _QLOCK(lock) (atomic_read(&(lock)->qlcode)&
_QSPINLOCK_LOCKED)
+#define GET_QN_IDX(code) (((code)>> _QCODE_VAL_OFFSET)& 3)
+#define GET_CPU_NR(code) (((code)>> (_QCODE_VAL_OFFSET + 2)) - 1)
+#ifndef _SET_QCODE
+#define _SET_QCODE(cpu, idx) ((((cpu) + 1)<< (_QCODE_VAL_OFFSET + 2)) |\
+ ((idx)<< _QCODE_VAL_OFFSET) |\
Someone please take the CPP away.. dude most this doesn't need to be a
macro. Its used only in 1 or two places and its utterly unreadable.
Yes, I can take them away. It is not a big problem.
-Longman
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