Commit d072c25f authored Dec 16, 2008 by Markus Metzger Committed by Ingo Molnar Dec 16, 2008

x86, bts: correctly report invalid bts records



Impact: change the reporting of empty BTS records

Correctly report a cleared BTS record as invalid. Used to be reported
as branch from 0 to 0.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent cc1dc6d0

arch/x86/kernel/ds.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -484,6 +484,9 @@ static int bts_read(struct bts_tracer tracer, const void at,
		out->qualifier = bts_branch;
		out->variant.lbr.from = bts_get(at, bts_from);
		out->variant.lbr.to = bts_get(at, bts_to);

		if (!out->variant.lbr.from && !out->variant.lbr.to)
		out->qualifier = bts_invalid;
		}

		return ds_cfg.sizeof_rec[ds_bts];