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author | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:44 +0100 |
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committer | Dario Faggioli <raistlin@linux.it> | 2012-07-06 13:17:44 +0100 |
commit | 8cea5d337f061c39ec2c639f262becd49dafe361 (patch) | |
tree | 0eeafad91dc3845ed65cb9b656f76fa78addf492 /tools/libxl/libxl_utils.h | |
parent | e9ca00107ce06dfb9c624dab4664724ffeeb74e5 (diff) | |
download | xen-8cea5d337f061c39ec2c639f262becd49dafe361.tar.gz xen-8cea5d337f061c39ec2c639f262becd49dafe361.tar.bz2 xen-8cea5d337f061c39ec2c639f262becd49dafe361.zip |
libxl: introduce some node map helpers
To allow for allocating a node specific libxl_bitmap (as it
is for cpu number and maps). Helper unctions to convert a node
map it its coresponding cpu map and vice versa are also
implemented.
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'tools/libxl/libxl_utils.h')
-rw-r--r-- | tools/libxl/libxl_utils.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/libxl/libxl_utils.h b/tools/libxl/libxl_utils.h index b2c5ec783b..8fee567611 100644 --- a/tools/libxl/libxl_utils.h +++ b/tools/libxl/libxl_utils.h @@ -104,6 +104,29 @@ static inline int libxl_cpu_bitmap_alloc(libxl_ctx *ctx, libxl_bitmap *cpumap, return libxl_bitmap_alloc(ctx, cpumap, max_cpus); } +static inline int libxl_node_bitmap_alloc(libxl_ctx *ctx, + libxl_bitmap *nodemap, + int max_nodes) +{ + if (max_nodes < 0) + return ERROR_INVAL; + if (max_nodes == 0) + max_nodes = libxl_get_max_nodes(ctx); + if (max_nodes == 0) + return ERROR_FAIL; + + return libxl_bitmap_alloc(ctx, nodemap, max_nodes); +} + +/* Populate cpumap with the cpus spanned by the nodes in nodemap */ +int libxl_nodemap_to_cpumap(libxl_ctx *ctx, + const libxl_bitmap *nodemap, + libxl_bitmap *cpumap); +/* Populate nodemap with the nodes of the cpus in cpumap */ +int libxl_cpumap_to_nodemap(libxl_ctx *ctx, + const libxl_bitmap *cpuemap, + libxl_bitmap *nodemap); + static inline uint32_t libxl__sizekb_to_mb(uint32_t s) { return (s + 1023) / 1024; } |