Commit 73bf1b62 authored Mar 05, 2009 by Markus Metzger Committed by Ingo Molnar Mar 06, 2009

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>

parent 9ca0791d

arch/x86/kernel/ds.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;