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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-07-13 11:45:31 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-07-13 11:45:31 +0100 |
| commit | 716ffa3e1d7abb7570fa10e04fd05bc41c3734af (patch) | |
| tree | dc2bc78d311a0d9354beea66a3e4a1d63c8f8c3b /xen/arch/x86/sysctl.c | |
| parent | cfbf17ffbb03e8c8501cae1bbba5459450b3447c (diff) | |
| download | xen-716ffa3e1d7abb7570fa10e04fd05bc41c3734af.tar.gz xen-716ffa3e1d7abb7570fa10e04fd05bc41c3734af.tar.bz2 xen-716ffa3e1d7abb7570fa10e04fd05bc41c3734af.zip | |
Move cpu_{sibling,core}_map into per-CPU space
These cpu maps get read from all CPUs, so apart from addressing the
square(nr_cpus) growth of these objects, they also get moved into the
previously introduced read-mostly sub-section of the per-CPU section,
in order to not need to waste a full cacheline in order to align (and
properly pad) them, which would be undue overhead on systems with low
NR_CPUS.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Diffstat (limited to 'xen/arch/x86/sysctl.c')
| -rw-r--r-- | xen/arch/x86/sysctl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c index 651dbcfdd3..27bda34e6e 100644 --- a/xen/arch/x86/sysctl.c +++ b/xen/arch/x86/sysctl.c @@ -60,9 +60,9 @@ long arch_do_sysctl( memset(pi, 0, sizeof(*pi)); pi->cpu_to_node = cpu_to_node_arr; pi->threads_per_core = - cpus_weight(cpu_sibling_map[0]); + cpus_weight(per_cpu(cpu_sibling_map, 0)); pi->cores_per_socket = - cpus_weight(cpu_core_map[0]) / pi->threads_per_core; + cpus_weight(per_cpu(cpu_core_map, 0)) / pi->threads_per_core; pi->nr_cpus = (u32)num_online_cpus(); pi->nr_nodes = num_online_nodes(); pi->total_pages = total_pages; |