forked from luck/tmp_suning_uos_patched
x86, ds: use single debug store cpu configuration
Use a single configuration for all cpus. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: oleg@redhat.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144602.191165000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -47,9 +47,8 @@ struct ds_configuration {
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/* Control bit-masks indexed by enum ds_feature: */
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unsigned long ctl[dsf_ctl_max];
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};
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static DEFINE_PER_CPU(struct ds_configuration, ds_cfg_array);
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static struct ds_configuration ds_cfg __read_mostly;
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#define ds_cfg per_cpu(ds_cfg_array, smp_processor_id())
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/* Maximal size of a DS configuration: */
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#define MAX_SIZEOF_DS (12 * 8)
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@ -1268,6 +1267,10 @@ ds_configure(const struct ds_configuration *cfg,
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void __cpuinit ds_init_intel(struct cpuinfo_x86 *c)
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{
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/* Only configure the first cpu. Others are identical. */
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if (ds_cfg.name)
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return;
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switch (c->x86) {
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case 0x6:
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switch (c->x86_model) {
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