sys/sched.h: conceal struct schedstate_percpu definition from userspace

struct schedstate_perpcu contains struct clockintr pointers.  struct
clockintr is not defined in userspace, so move schedstate_percpu into
the _KERNEL guard to hide it from userspace.  Nothing in base userspace
uses schedstate_percpu.

Thread: https://marc.info/?l=openbsd-tech&m=169861224916185&w=2

ok claudio@ millert@

diff --git a/sys/sys/sched.h b/sys/sys/sched.h
index 5a07f97..e86d6b6 100644 (file)
--- a/sys/sys/sched.h
+++ b/sys/sys/sched.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: sched.h,v 1.67 2023/10/24 13:20:11 claudio Exp $      */
+/*     $OpenBSD: sched.h,v 1.68 2024/01/14 17:11:55 cheloha Exp $      */
 /* $NetBSD: sched.h,v 1.2 1999/02/28 18:14:58 ross Exp $ */
 
 /*-
@@ -88,6 +88,15 @@
 #define CP_IDLE                5
 #define CPUSTATES      6
 
+struct cpustats {
+       uint64_t        cs_time[CPUSTATES];     /* CPU state statistics */
+       uint64_t        cs_flags;               /* see below */
+};
+
+#define CPUSTATS_ONLINE                0x0001  /* CPU is schedulable */
+
+#ifdef _KERNEL
+
 #define        SCHED_NQS       32                      /* 32 run queues. */
 
 struct clockintr;
@@ -124,15 +133,6 @@ struct schedstate_percpu {
        u_char spc_smrgp;               /* this CPU's view of grace period */
 };
 
-struct cpustats {
-       uint64_t        cs_time[CPUSTATES];     /* CPU state statistics */
-       uint64_t        cs_flags;               /* see below */
-};
-
-#define CPUSTATS_ONLINE                0x0001  /* CPU is schedulable */
-
-#ifdef _KERNEL
-
 /* spc_flags */
 #define SPCF_SEENRR             0x0001  /* process has seen roundrobin() */
 #define SPCF_SHOULDYIELD        0x0002  /* process should yield the CPU */