x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs()

ds_write_config() can write the BTS as well as the PEBS part of
the DS config. ds_request_pebs() passes the wrong qualifier, which
results in the wrong configuration to be written.

Reported-by: Stephane Eranian <eranian@googlemail.com>
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
LKML-Reference: <20090305085721.A22550@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index de7cdbd..87b67e3 100644 (file)
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -729,7 +729,7 @@ struct pebs_tracer *ds_request_pebs(struct task_struct *task,
 
        spin_unlock_irqrestore(&ds_lock, irq);
 
-       ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_bts);
+       ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_pebs);
        ds_resume_pebs(tracer);
 
        return tracer;