diff options
| author | Markus Metzger <markus.t.metzger@intel.com> | 2008-12-16 15:53:11 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 18:28:37 +0100 |
| commit | d072c25f531c6513994960401d2c7f059434c0d2 (patch) | |
| tree | af9631b5f00a48e79b0837311e70fbbb26ba61a0 /arch | |
| parent | cc1dc6d039ced64c2f8b8457bf1cccf4ecfc5942 (diff) | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/ds.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c index 0dc795951d7..98d271e60e0 100644 --- a/arch/x86/kernel/ds.c +++ b/arch/x86/kernel/ds.c @@ -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]; |