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Diffstat (limited to 'regressions/ck_spinlock/linux_spinlock.h')
-rw-r--r--regressions/ck_spinlock/linux_spinlock.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/regressions/ck_spinlock/linux_spinlock.h b/regressions/ck_spinlock/linux_spinlock.h
new file mode 100644
index 000000000000..5fe1f3e21ef7
--- /dev/null
+++ b/regressions/ck_spinlock/linux_spinlock.h
@@ -0,0 +1,39 @@
+#include <ck_cc.h>
+
+CK_CC_INLINE static void
+spin_lock(volatile unsigned int *lock)
+{
+#ifdef __x86_64__
+ __asm__ __volatile__(
+ "\n1:\t"
+ "lock ; decl %0\n\t"
+ "jns 2f\n"
+ "3:\n"
+ "rep;nop\n\t"
+ "cmpl $0,%0\n\t"
+ "jle 3b\n\t"
+ "jmp 1b\n"
+ "2:\t" : "=m" (*lock) : : "memory");
+#else
+ *lock = 1;
+#endif
+
+ return;
+}
+
+CK_CC_INLINE static void
+spin_unlock(volatile unsigned int *lock)
+{
+#ifdef __x86_64__
+ __asm__ __volatile__("movl $1,%0" :"=m" (*lock) :: "memory");
+#else
+ *lock = 0;
+ return;
+#endif
+}
+
+#define LOCK_NAME "linux_spinlock"
+#define LOCK_DEFINE volatile unsigned int lock = 1
+#define LOCK spin_lock(&lock)
+#define UNLOCK spin_unlock(&lock)
+