consistent calculation of ram_* on openbsd

diff --git a/components/ram.c b/components/ram.c
index 1178837..57081d2 100644 (file)
--- a/components/ram.c
+++ b/components/ram.c
@@ -60,6 +60,7 @@
        #include <unistd.h>
 
        #define LOG1024         10
+       #define pagetok(size, pageshift) ((size) << (pageshift - LOG1024))
 
        inline int
        load_uvmexp(struct uvmexp *uvmexp)
@@ -81,7 +82,7 @@
 
                if (load_uvmexp(&uvmexp)) {
                        free_pages = uvmexp.npages - uvmexp.active;
-                       free = (float)(free_pages << (uvmexp.pageshift - LOG1024)) / 1024 / 1024; 
+                       free = (float)(pagetok(free_pages, uvmexp.pageshift)) / 1024 / 1024;
                        return bprintf("%f", free);
                }
 
@@ -109,7 +110,7 @@
                float total;
 
                if (load_uvmexp(&uvmexp)) {
-                       total = (float)(uvmexp.npages << (uvmexp.pageshift - LOG1024)) / 1024 / 1024; 
+                       total = (float)(pagetok(uvmexp.npages, uvmexp.pageshift)) / 1024 / 1024;
                        return bprintf("%f", total);
                }
 
@@ -123,8 +124,7 @@
                float used;
 
                if (load_uvmexp(&uvmexp)) {
-                       used = (double) (uvmexp.active * uvmexp.pagesize) /
-                              1024 / 1024 / 1024;
+                       used = (float)(pagetok(uvmexp.active, uvmexp.pageshift)) / 1024 / 1024;
                        return bprintf("%f", used);
                }