4 files changed, 8 insertions, 3 deletions
diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h
index 6ed675e..cf073fe 100644
--- a/sys/include/arch/amd64/cpu.h
+++ b/sys/include/arch/amd64/cpu.h
@@ -58,6 +58,7 @@ struct cpu_info {
     uint32_t apicid;
     uint32_t feat;
     uint32_t vendor;            /* Vendor (see CPU_VENDOR_*) */
+    uint8_t preempt : 1;        /* CPU is preemptable */
     uint8_t ipi_dispatch : 1;   /* 1: IPIs being dispatched */
     uint8_t ipi_id;
     ipi_pend_t ipi_pending[N_IPIVEC];
diff --git a/sys/include/arch/amd64/isa/i8042var.h b/sys/include/arch/amd64/isa/i8042var.h
index 13c3095..9619920 100644
--- a/sys/include/arch/amd64/isa/i8042var.h
+++ b/sys/include/arch/amd64/isa/i8042var.h
@@ -74,6 +74,10 @@
 #define I8042_LED_NUM       BIT(1)
 #define I8042_LED_CAPS      BIT(2)
 
+/* Extended scancode types */
+#define I8042_XSC_ENDPR  0      /* End pressed */
+#define I8042_XSC_ENDRL  1      /* End released */
+
 /* Quirks */
 #define I8042_HOSTILE       BIT(0)      /* If EC likes throwing NMIs */
 
diff --git a/sys/include/sys/sched.h b/sys/include/sys/sched.h
index 8b0ba02..7bba9df 100644
--- a/sys/include/sys/sched.h
+++ b/sys/include/sys/sched.h
@@ -66,6 +66,9 @@ struct sched_stat {
 void sched_stat(struct sched_stat *statp);
 void sched_init(void);
 
+void sched_preempt_set(bool enable);
+bool sched_preemptable(void);
+
 void sched_yield(void);
 void sched_suspend(struct proc *td, const struct timeval *tv);
 void sched_detach(struct proc *td);
diff --git a/sys/include/sys/spinlock.h b/sys/include/sys/spinlock.h
index 140addc..b416152 100644
--- a/sys/include/sys/spinlock.h
+++ b/sys/include/sys/spinlock.h
@@ -44,9 +44,6 @@ void spinlock_release(struct spinlock *lock);
 int spinlock_try_acquire(struct spinlock *lock);
 int spinlock_usleep(struct spinlock *lock, size_t usec_max);
 
-/* System-wide locking (be careful!!) */
-int syslock(void);
-void sysrel(void);
 #endif
 
 #endif  /* !_SYS_SPINLOCK_H_ */