[patch 3/3] x86, bts: correctly report invalid bts records

[patch 3/3] x86, bts: correctly report invalid bts records

[Markus Metzger]

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>
---

Index: ftrace/arch/x86/kernel/ds.c
===================================================================
--- ftrace.orig/arch/x86/kernel/ds.c	2008-12-15 09:29:05.000000000 +0100
+++ ftrace/arch/x86/kernel/ds.c	2008-12-15 11:32:04.000000000 +0100
@@ -484,6 +484,9 @@
 		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];
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Re: [patch 3/3] x86, bts: correctly report invalid bts records

[Ingo Molnar]

* Markus Metzger <markus.t.metzger@intel.com> wrote:

> 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>

applied to tip/tracing/hw-branch-tracer, thanks,

	Ingo