Merge branch 'devel'

[palacios-OLD.git] / kitten / include / lwk / cpuinfo.h

diff --git a/kitten/include/lwk/cpuinfo.h b/kitten/include/lwk/cpuinfo.h
new file mode 100644 (file)
index 0000000..f7c4152
--- /dev/null
+++ b/kitten/include/lwk/cpuinfo.h
@@ -0,0 +1,47 @@
+#ifndef _LWK_CPUINFO_H
+#define _LWK_CPUINFO_H
+
+#include <lwk/types.h>
+#include <lwk/cpumask.h>
+#include <lwk/cache.h>
+#include <lwk/aspace.h>
+#include <arch/cpuinfo.h>
+
+/**
+ * CPU information.
+ * Each CPU in the system is described by one of these structures.
+ */
+struct cpuinfo {
+       /* Identification */
+       uint16_t        logical_id;        // CPU's kernel assigned ID
+       uint16_t        physical_id;       // CPU's hardware ID
+
+       /* Topology information */
+       uint16_t        numa_node_id;      // NUMA node ID this CPU is in
+       cpumask_t       numa_node_map;     // CPUs in this CPU's NUMA node
+       cpumask_t       llc_share_map;     // CPUs sharing last level cache
+
+       /* Physical packaging */
+       uint16_t        phys_socket_id;    // Physical socket/package
+       uint16_t        phys_core_id;      // Core ID in the socket/package
+       uint16_t        phys_hwthread_id;  // Hardware thread ID in core
+
+       /* Memory management info */
+       vmpagesize_t    pagesz_mask;       // Page sizes supported by the CPU
+
+       /* Architecture specific */
+       struct arch_cpuinfo arch;
+} ____cacheline_aligned;
+
+extern struct cpuinfo  cpu_info[NR_CPUS];
+extern cpumask_t       cpu_present_map;
+extern cpumask_t       cpu_online_map;
+
+/**
+ * Returns the number of CPUs in the system.
+ */
+#define num_cpus()     cpus_weight(cpu_present_map)
+
+extern void print_cpuinfo(struct cpuinfo *);
+
+#endif