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Subject[PATCH 5.4 106/109] perf scripts python: exported-sql-viewer.py: Fix zero id in call graph Find result
Date
From: Adrian Hunter <adrian.hunter@intel.com>

commit 7ff520b0a71dd2db695b52ad117d81b7eaf6ff9d upstream.

Using ctrl-F ('Find') would not find 'unknown' because it matches id zero.
Fix by excluding id zero from selection.

Example:

$ perf record -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.034 MB perf.data ]
$ perf script --itrace=bep -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py perf.data.db branches calls
2020-06-26 15:32:14.928997 Creating database ...
2020-06-26 15:32:14.933971 Writing records...
2020-06-26 15:32:15.535251 Adding indexes
2020-06-26 15:32:15.542993 Dropping unused tables
2020-06-26 15:32:15.549716 Done
$ python3 ~/libexec/perf-core/scripts/python/exported-sql-viewer.py perf.data.db

Select: Reports -> Context-Sensitive Call Graph
Press: Ctrl-F
Enter: unknown
Press: Enter

Before: gets stuck
After: tree is expanded to line showing 'unknown'

Fixes: 254c0d820b86d ("perf scripts python: exported-sql-viewer.py: Factor out CallGraphModelBase")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200629091955.17090-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
tools/perf/scripts/python/exported-sql-viewer.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/tools/perf/scripts/python/exported-sql-viewer.py
+++ b/tools/perf/scripts/python/exported-sql-viewer.py
@@ -756,7 +756,8 @@ class CallGraphModel(CallGraphModelBase)
" FROM calls"
" INNER JOIN call_paths ON calls.call_path_id = call_paths.id"
" INNER JOIN symbols ON call_paths.symbol_id = symbols.id"
- " WHERE symbols.name" + match +
+ " WHERE calls.id <> 0"
+ " AND symbols.name" + match +
" GROUP BY comm_id, thread_id, call_path_id"
" ORDER BY comm_id, thread_id, call_path_id")


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