cpupools [2/6]: libxc changes

Signed-off-by: Juergen Gross <juergen.gross@ts.fujitsu.com>

1 files changed, 154 insertions, 0 deletions

diff --git a/tools/libxc/xc_cpupool.c b/tools/libxc/xc_cpupool.c
new file mode 100644
index 0000000000..a7a759fcad
--- /dev/null
+++ b/tools/libxc/xc_cpupool.c
@@ -0,0 +1,154 @@
+/******************************************************************************
+ * xc_cpupool.c
+ *
+ * API for manipulating and obtaining information on cpupools.
+ *
+ * Copyright (c) 2009, J Gross.
+ */
+
+#include <stdarg.h>
+#include "xc_private.h"
+
+int xc_cpupool_create(int xc_handle,
+                      uint32_t *ppoolid,
+                      uint32_t sched_id)
+{
+    int err;
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_CREATE;
+    domctl.u.cpupool_op.cpupool_id = (*ppoolid == 0) ?
+        XEN_DOMCTL_CPUPOOL_PAR_ANY : *ppoolid;
+    domctl.u.cpupool_op.sched_id = sched_id;
+    if ( (err = do_domctl_save(xc_handle, &domctl)) != 0 )
+        return err;
+
+    *ppoolid = domctl.u.cpupool_op.cpupool_id;
+    return 0;
+}
+
+int xc_cpupool_destroy(int xc_handle,
+                       uint32_t poolid)
+{
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_DESTROY;
+    domctl.u.cpupool_op.cpupool_id = poolid;
+    return do_domctl_save(xc_handle, &domctl);
+}
+
+int xc_cpupool_getinfo(int xc_handle, 
+                       uint32_t first_poolid,
+                       uint32_t n_max, 
+                       xc_cpupoolinfo_t *info)
+{
+    int err = 0;
+    int p;
+    uint32_t poolid = first_poolid;
+    uint8_t local[sizeof (info->cpumap)];
+    DECLARE_DOMCTL;
+
+    memset(info, 0, n_max * sizeof(xc_cpupoolinfo_t));
+
+    for (p = 0; p < n_max; p++)
+    {
+        domctl.cmd = XEN_DOMCTL_cpupool_op;
+        domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_INFO;
+        domctl.u.cpupool_op.cpupool_id = poolid;
+        set_xen_guest_handle(domctl.u.cpupool_op.cpumap.bitmap, local);
+        domctl.u.cpupool_op.cpumap.nr_cpus = sizeof(info->cpumap) * 8;
+
+        if ( (err = lock_pages(local, sizeof(local))) != 0 )
+        {
+            PERROR("Could not lock memory for Xen hypercall");
+            break;
+        }
+        err = do_domctl_save(xc_handle, &domctl);
+        unlock_pages(local, sizeof (local));
+
+        if ( err < 0 )
+            break;
+
+        info->cpupool_id = domctl.u.cpupool_op.cpupool_id;
+        info->sched_id = domctl.u.cpupool_op.sched_id;
+        info->n_dom = domctl.u.cpupool_op.n_dom;
+        bitmap_byte_to_64(&(info->cpumap), local, sizeof(local) * 8);
+        poolid = domctl.u.cpupool_op.cpupool_id + 1;
+        info++;
+    }
+
+    if ( p == 0 )
+        return err;
+
+    return p;
+}
+
+int xc_cpupool_addcpu(int xc_handle,
+                      uint32_t poolid,
+                      int cpu)
+{
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_ADDCPU;
+    domctl.u.cpupool_op.cpupool_id = poolid;
+    domctl.u.cpupool_op.cpu = (cpu < 0) ? XEN_DOMCTL_CPUPOOL_PAR_ANY : cpu;
+    return do_domctl_save(xc_handle, &domctl);
+}
+
+int xc_cpupool_removecpu(int xc_handle,
+                         uint32_t poolid,
+                         int cpu)
+{
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_RMCPU;
+    domctl.u.cpupool_op.cpupool_id = poolid;
+    domctl.u.cpupool_op.cpu = (cpu < 0) ? XEN_DOMCTL_CPUPOOL_PAR_ANY : cpu;
+    return do_domctl_save(xc_handle, &domctl);
+}
+
+int xc_cpupool_movedomain(int xc_handle,
+                          uint32_t poolid,
+                          uint32_t domid)
+{
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_MOVEDOMAIN;
+    domctl.u.cpupool_op.cpupool_id = poolid;
+    domctl.u.cpupool_op.domid = domid;
+    return do_domctl_save(xc_handle, &domctl);
+}
+
+int xc_cpupool_freeinfo(int xc_handle,
+                        uint64_t *cpumap)
+{
+    int err;
+    uint8_t local[sizeof (*cpumap)];
+    DECLARE_DOMCTL;
+
+    domctl.cmd = XEN_DOMCTL_cpupool_op;
+    domctl.u.cpupool_op.op = XEN_DOMCTL_CPUPOOL_OP_FREEINFO;
+    set_xen_guest_handle(domctl.u.cpupool_op.cpumap.bitmap, local);
+    domctl.u.cpupool_op.cpumap.nr_cpus = sizeof(*cpumap) * 8;
+
+    if ( (err = lock_pages(local, sizeof(local))) != 0 )
+    {
+        PERROR("Could not lock memory for Xen hypercall");
+        return err;
+    }
+
+    err = do_domctl_save(xc_handle, &domctl);
+    unlock_pages(local, sizeof (local));
+
+    if (err < 0)
+        return err;
+
+    bitmap_byte_to_64(cpumap, local, sizeof(local) * 8);
+
+    return 0;
+}