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perf annotate-data: Skip sample histogram for stack canary

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It's a pseudo data type and has no field.

Fixes: b3c95109c1 ("perf annotate-data: Add stack canary type")
Closes: https://lore.kernel.org/lkml/Zhb6jJneP36Z-or0@x1
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240411033256.2099646-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2024-04-10 20:32:50 -07:00
committed by Arnaldo Carvalho de Melo
parent 7aa8749979
commit eb83348863
1 changed files with 3 additions and 2 deletions
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5
tools/perf/util/annotate.c
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@@ -2399,8 +2399,9 @@ retry:
mem_type = find_data_type(&dloc);
if (mem_type == NULL && is_stack_canary(arch, op_loc)) {
mem_type = &canary_type;
dloc.type_offset = 0;
istat->good++;
he->mem_type_off = 0;
return &canary_type;
}
if (mem_type)