1 files changed, 64 insertions, 0 deletions
diff --git a/kern/cpumap.c b/kern/cpumap.c
new file mode 100644
index 00000000..a76450b7
--- /dev/null
+++ b/kern/cpumap.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2013 Richard Braun.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <kern/bitmap.h>
+#include <kern/cpumap.h>
+#include <kern/error.h>
+#include <kern/kmem.h>
+#include <kern/stddef.h>
+
+static struct kmem_cache cpumap_cache;
+
+void
+cpumap_setup(void)
+{
+    kmem_cache_init(&cpumap_cache, "cpumap", sizeof(struct cpumap),
+                    0, NULL, NULL, NULL, 0);
+}
+
+int
+cpumap_create(struct cpumap **cpumapp)
+{
+    struct cpumap *cpumap;
+
+    cpumap = kmem_cache_alloc(&cpumap_cache);
+
+    if (cpumap == NULL)
+        return ERROR_NOMEM;
+
+    *cpumapp = cpumap;
+    return 0;
+}
+
+void
+cpumap_destroy(struct cpumap *cpumap)
+{
+    kmem_cache_free(&cpumap_cache, cpumap);
+}
+
+int
+cpumap_check(const struct cpumap *cpumap)
+{
+    int index;
+
+    index = bitmap_find_first(cpumap->cpus, cpu_count());
+
+    if (index == -1)
+        return ERROR_INVAL;
+
+    return 0;
+}