Mailing List Archive

# HG changeset patch
# User Juergen Gross <juergen.gross@ts.fujitsu.com>
# Date 1297971553 0
# Node ID 2afa06e1f103f14da7118bd27db8e69f228a05fe
# Parent 2ad66067784da47eef7ce2d0a204fbeae0557ef1
xl cpupool-numa-split: reduce number of Dom0 vcpus

When reducing the number of physical cpus available for Domain-0 by xl
cpupool-numa-split, reduce the number of vcpus accordingly.

Signed-off-by: juergen.gross@ts.fujitsu.com
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
tools/libxl/xl_cmdimpl.c | 27 +++++++++++++++++++++++++--
1 files changed, 25 insertions(+), 2 deletions(-)

diff -r 2ad66067784d -r 2afa06e1f103 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c Thu Feb 17 19:12:45 2011 +0000
+++ b/tools/libxl/xl_cmdimpl.c Thu Feb 17 19:39:13 2011 +0000
@@ -5785,6 +5785,7 @@ int main_cpupoolnumasplit(int argc, char
libxl_cpumap cpumap;
libxl_cpupoolinfo *poolinfo;
libxl_topologyinfo topology;
+ libxl_dominfo info;

while ((opt = getopt(argc, argv, "h")) != -1) {
switch (opt) {
@@ -5840,11 +5841,33 @@ int main_cpupoolnumasplit(int argc, char
goto out;
}

+ n = 0;
for (c = 0; c < topology.nodemap.entries; c++) {
if (topology.nodemap.array[c] == node) {
topology.nodemap.array[c] = LIBXL_CPUARRAY_INVALID_ENTRY;
- }
- }
+ libxl_cpumap_set(&cpumap, n);
+ n++;
+ }
+ }
+ if (libxl_set_vcpuonline(&ctx, 0, &cpumap)) {
+ fprintf(stderr, "error on removing vcpus for Domain-0\n");
+ goto out;
+ }
+ for (c = 0; c < 10; c++) {
+ if (libxl_domain_info(&ctx, &info, 0)) {
+ fprintf(stderr, "error on getting info for Domain-0\n");
+ goto out;
+ }
+ if (info.vcpu_online == n) {
+ break;
+ }
+ sleep(1);
+ }
+ if (info.vcpu_online > n) {
+ fprintf(stderr, "failed to offline vcpus\n");
+ goto out;
+ }
+ memset(cpumap.map, 0, cpumap.size);

for (c = 0; c < topology.nodemap.entries; c++) {
if (topology.nodemap.array[c] == LIBXL_CPUARRAY_INVALID_ENTRY) {

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