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authorAdrian Hunter <adrian.hunter@intel.com>2018-05-31 13:23:42 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-03 11:25:00 +0200
commit9e9db211cfb9e29456edc7cbf302b2b4c44b3d87 (patch)
treeecbc8e3ea72769aaa0947427df473e751bf66a78
parent5009bd5b93212a206cdf09bd849779ac63847a73 (diff)
downloadlinux-linaro-stable-9e9db211cfb9e29456edc7cbf302b2b4c44b3d87.tar.gz
perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING
commit dbcb82b93f3e8322891e47472c89e63058b81e99 upstream. sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. In one case, INTEL_PT_SS_NOT_TRACING state was not correctly transitioning to INTEL_PT_SS_TRACING state due to a missing case clause. Add it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--tools/perf/util/intel-pt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index d9573c1fa555..a39fc1200e2d 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1560,6 +1560,7 @@ static int intel_pt_sample(struct intel_pt_queue *ptq)
if (intel_pt_is_switch_ip(ptq, state->to_ip)) {
switch (ptq->switch_state) {
+ case INTEL_PT_SS_NOT_TRACING:
case INTEL_PT_SS_UNKNOWN:
case INTEL_PT_SS_EXPECTING_SWITCH_IP:
err = intel_pt_next_tid(pt, ptq);