[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 04/15] libxl: introduce libxl_node_to_cpumap
As an helper for the special case (of libxl_nodemap_to_cpumap) when one wants the cpumap for just one node. Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx> Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> --- Picking this up from a previously submitted series ("xl: allow for node-wise specification of vcpu pinning") as the changes in that and in this series would otherwise be conflicting. If this is considered fine, Feel free to apply it from here and skip the corresponding e-mail in the original submission. --- tools/libxl/libxl_utils.c | 22 ++++++++++++++++++++++ tools/libxl/libxl_utils.h | 3 +++ 2 files changed, 25 insertions(+) diff --git a/tools/libxl/libxl_utils.c b/tools/libxl/libxl_utils.c index 4309e5e..5c125e6 100644 --- a/tools/libxl/libxl_utils.c +++ b/tools/libxl/libxl_utils.c @@ -668,6 +668,28 @@ int libxl_nodemap_to_cpumap(libxl_ctx *ctx, return rc; } +int libxl_node_to_cpumap(libxl_ctx *ctx, int node, + libxl_bitmap *cpumap) +{ + libxl_bitmap nodemap; + int rc = 0; + + libxl_bitmap_init(&nodemap); + + rc = libxl_node_bitmap_alloc(ctx, &nodemap, 0); + if (rc) + goto out; + + libxl_bitmap_set_none(&nodemap); + libxl_bitmap_set(&nodemap, node); + + rc = libxl_nodemap_to_cpumap(ctx, &nodemap, cpumap); + + out: + libxl_bitmap_dispose(&nodemap); + return rc; +} + int libxl_cpumap_to_nodemap(libxl_ctx *ctx, const libxl_bitmap *cpumap, libxl_bitmap *nodemap) diff --git a/tools/libxl/libxl_utils.h b/tools/libxl/libxl_utils.h index a430362..7b84e6a 100644 --- a/tools/libxl/libxl_utils.h +++ b/tools/libxl/libxl_utils.h @@ -129,6 +129,9 @@ static inline int libxl_node_bitmap_alloc(libxl_ctx *ctx, int libxl_nodemap_to_cpumap(libxl_ctx *ctx, const libxl_bitmap *nodemap, libxl_bitmap *cpumap); +/* Populate cpumap with the cpus spanned by node */ +int libxl_node_to_cpumap(libxl_ctx *ctx, int node, + 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, _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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