libxl: allow to allocate cpumap with specific size

Currently, libxl_cpumap_alloc()allocate the cpumap with size of number
of physical cpus. In some place, we may want to allocate specific size
of cpumap.  This patch allow to pass a argument to specific the size
that you want to allocate. If pass 0, it means the size is equal to
number of physical cpus.

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/libxl/libxl_utils.h b/tools/libxl/libxl_utils.h
index 74beb52a67..7ab0c0915c 100644
--- a/tools/libxl/libxl_utils.h
+++ b/tools/libxl/libxl_utils.h
@@ -63,7 +63,7 @@ int libxl_devid_to_device_nic(libxl_ctx *ctx, uint32_t domid, int devid,
 int libxl_vdev_to_device_disk(libxl_ctx *ctx, uint32_t domid, const char *vdev,
                                libxl_device_disk *disk);
 
-int libxl_cpumap_alloc(libxl_ctx *ctx, libxl_cpumap *cpumap);
+int libxl_cpumap_alloc(libxl_ctx *ctx, libxl_cpumap *cpumap, int max_cpus);
 int libxl_cpumap_test(libxl_cpumap *cpumap, int cpu);
 void libxl_cpumap_set(libxl_cpumap *cpumap, int cpu);
 void libxl_cpumap_reset(libxl_cpumap *cpumap, int cpu);