[PATCH v1] perf jevents: Don't encode MSRs with no value

[Ian Rogers <irogers@google.com>]

Fixes the events mem_trans_retired.load_latency (EMR) and
mem_inst_retired.latency_above_threshold_0 (NHM, WSM) that were having
their ldlat= value encoded as python's None.

Fixes: ffc606ada3d7 ("perf jevents: Add python converter script")
Reported-by: kernel test robot <yi1.lai@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202611050801.67bb4af4-lkp@intel.com
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/jevents.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 080e04b51b8c..e083f7495e67 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -396,7 +396,7 @@ class JsonEvent:
         event += f',{value}{canonicalize_value(jd[key])}'
     if filter:
       event += f',{filter}'
-    if msr:
+    if msr and msrval:
       event += f',{msr}{msrval}'
     if self.desc and extra_desc:
       self.desc += extra_desc
-- 
2.56.0.455.g6c5a503b38-goog