Mailing List Archive

Following suit from cpumap and cpumask implementations.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Juergen Gross <juergen.gross@ts.fujitsu.com>

diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c
--- a/tools/libxc/xc_misc.c
+++ b/tools/libxc/xc_misc.c
@@ -54,6 +54,11 @@ int xc_get_cpumap_size(xc_interface *xch
return (xc_get_max_cpus(xch) + 7) / 8;
}

+int xc_get_nodemap_size(xc_interface *xch)
+{
+ return (xc_get_max_nodes(xch) + 7) / 8;
+}
+
xc_cpumap_t xc_cpumap_alloc(xc_interface *xch)
{
int sz;
@@ -64,6 +69,16 @@ xc_cpumap_t xc_cpumap_alloc(xc_interface
return calloc(1, sz);
}

+xc_nodemap_t xc_nodemap_alloc(xc_interface *xch)
+{
+ int sz;
+
+ sz = xc_get_nodemap_size(xch);
+ if (sz == 0)
+ return NULL;
+ return calloc(1, sz);
+}
+
int xc_readconsolering(xc_interface *xch,
char *buffer,
unsigned int *pnr_chars,
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -330,12 +330,20 @@ int xc_get_cpumap_size(xc_interface *xch
/* allocate a cpumap */
xc_cpumap_t xc_cpumap_alloc(xc_interface *xch);

- /*
+/*
* NODEMAP handling
*/
+typedef uint8_t *xc_nodemap_t;
+
/* return maximum number of NUMA nodes the hypervisor supports */
int xc_get_max_nodes(xc_interface *xch);

+/* return array size for nodemap */
+int xc_get_nodemap_size(xc_interface *xch);
+
+/* allocate a nodemap */
+xc_nodemap_t xc_nodemap_alloc(xc_interface *xch);
+
/*
* DOMAIN DEBUGGING FUNCTIONS
*/
diff --git a/xen/common/domctl.c b/xen/common/domctl.c
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -117,6 +117,30 @@ int xenctl_bitmap_to_cpumask(cpumask_var
return err;
}

+int nodemask_to_xenctl_bitmap(struct xenctl_bitmap *xenctl_nodemap,
+ const nodemask_t *nodemask)
+{
+ return bitmap_to_xenctl_bitmap(xenctl_nodemap, cpumask_bits(nodemask),
+ MAX_NUMNODES);
+}
+
+int xenctl_bitmap_to_nodemask(nodemask_t *nodemask,
+ const struct xenctl_bitmap *xenctl_nodemap)
+{
+ int err = 0;
+
+ if ( alloc_nodemask_var(nodemask) ) {
+ err = xenctl_bitmap_to_bitmap(nodes_addr(*nodemask), xenctl_nodemap,
+ MAX_NUMNODES);
+ if ( err )
+ free_nodemask_var(*nodemask);
+ }
+ else
+ err = -ENOMEM;
+
+ return err;
+}
+
static inline int is_free_domid(domid_t dom)
{
struct domain *d;
diff --git a/xen/include/xen/nodemask.h b/xen/include/xen/nodemask.h
--- a/xen/include/xen/nodemask.h
+++ b/xen/include/xen/nodemask.h
@@ -298,6 +298,53 @@ static inline int __nodemask_parse(const
}
#endif

+/*
+ * nodemask_var_t: struct nodemask for stack usage.
+ *
+ * See definition of cpumask_var_t in include/xen//cpumask.h.
+ */
+#if MAX_NUMNODES > 2 * BITS_PER_LONG
+#include <xen/xmalloc.h>
+
+typedef nodemask_t *nodemask_var_t;
+
+#define nr_nodemask_bits (BITS_TO_LONGS(MAX_NUMNODES) * BITS_PER_LONG)
+
+static inline bool_t alloc_nodemask_var(nodemask_var_t *mask)
+{
+ *(void **)mask = _xmalloc(nr_nodemask_bits / 8, sizeof(long));
+ return *mask != NULL;
+}
+
+static inline bool_t zalloc_nodemask_var(nodemask_var_t *mask)
+{
+ *(void **)mask = _xzalloc(nr_nodemask_bits / 8, sizeof(long));
+ return *mask != NULL;
+}
+
+static inline void free_nodemask_var(nodemask_var_t mask)
+{
+ xfree(mask);
+}
+#else
+typedef nodemask_t nodemask_var_t;
+
+static inline bool_t alloc_nodemask_var(nodemask_var_t *mask)
+{
+ return 1;
+}
+
+static inline bool_t zalloc_nodemask_var(nodemask_var_t *mask)
+{
+ nodes_clear(*mask);
+ return 1;
+}
+
+static inline void free_nodemask_var(nodemask_var_t mask)
+{
+}
+#endif
+
#if MAX_NUMNODES > 1
#define for_each_node_mask(node, mask) \
for ((node) = first_node(mask); \

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