util: Cleanup and rename os_mem_prealloc()

Let's
* give the function a "qemu_*" style name
* make sure the parameters in the implementation match the prototype
* rename smp_cpus to max_threads, which makes the semantics of that
  parameter clearer

... and add a function documentation.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <20221014134720.168738-2-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index 5723d3eb4c..e1cb725ecc 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -268,14 +268,14 @@ int getpagesize(void)
     return system_info.dwPageSize;
 }
 
-void os_mem_prealloc(int fd, char *area, size_t memory, int smp_cpus,
-                     Error **errp)
+void qemu_prealloc_mem(int fd, char *area, size_t sz, int max_threads,
+                       Error **errp)
 {
     int i;
     size_t pagesize = qemu_real_host_page_size();
 
-    memory = (memory + pagesize - 1) & -pagesize;
-    for (i = 0; i < memory / pagesize; i++) {
+    sz = (sz + pagesize - 1) & -pagesize;
+    for (i = 0; i < sz / pagesize; i++) {
         memset(area + pagesize * i, 0, 1);
     }
 }