Cleanup kmeminit_nkmempages().

NKMEMPAGES_MIN was removed long time ago in all archs so there is no
need to keep it.
Also initalize nkmempages_max at compile time since sparc (with variable
page size) is long gone as well.
No objection from miod@

diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c
index 3acf5a2..104a6bd 100644 (file)
--- a/sys/kern/kern_malloc.c
+++ b/sys/kern/kern_malloc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: kern_malloc.c,v 1.148 2022/08/14 01:58:27 jsg Exp $   */
+/*     $OpenBSD: kern_malloc.c,v 1.149 2023/11/29 11:47:15 claudio Exp $       */
 /*     $NetBSD: kern_malloc.c,v 1.15.4.2 1996/06/13 17:10:56 cgd Exp $ */
 
 /*
@@ -88,18 +88,13 @@ struct vm_map *kmem_map = NULL;
 u_int  nkmempages = NKMEMPAGES;
 
 /*
- * Defaults for lower- and upper-bounds for the kmem_map page count.
+ * Defaults for upper-bounds for the kmem_map page count.
  * Can be overridden by kernel config options.
  */
-#ifndef        NKMEMPAGES_MIN
-#define        NKMEMPAGES_MIN  0
-#endif
-u_int  nkmempages_min = 0;
-
 #ifndef NKMEMPAGES_MAX
 #define        NKMEMPAGES_MAX  NKMEMPAGES_MAX_DEFAULT
 #endif
-u_int  nkmempages_max = 0;
+u_int  nkmempages_max = NKMEMPAGES_MAX;
 
 struct mutex malloc_mtx = MUTEX_INITIALIZER(IPL_VM);
 struct kmembuckets bucket[MINBUCKET + 16];
@@ -517,17 +512,6 @@ kmeminit_nkmempages(void)
                return;
        }
 
-       /*
-        * We can't initialize these variables at compilation time, since
-        * the page size may not be known (on sparc GENERIC kernels, for
-        * example). But we still want the MD code to be able to provide
-        * better values.
-        */
-       if (nkmempages_min == 0)
-               nkmempages_min = NKMEMPAGES_MIN;
-       if (nkmempages_max == 0)
-               nkmempages_max = NKMEMPAGES_MAX;
-
        /*
         * We use the following (simple) formula:
         *
@@ -542,9 +526,6 @@ kmeminit_nkmempages(void)
        if (npages > nkmempages_max)
                npages = nkmempages_max;
 
-       if (npages < nkmempages_min)
-               npages = nkmempages_min;
-
        nkmempages = npages;
 }