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authorMasami Hiramatsu (Google) <mhiramat@kernel.org>2022-11-05 12:01:14 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-11-08 22:21:20 -0300
commita9dfc46c67b52ad43b8e335e28f4cf8002c67793 (patch)
treeb1464592b3731775719f3d8d0644b135c56658a1 /tools/perf/scripts/python
parentperf trace: Add BPF augmenter to perf_event_open()'s 'struct perf_event_attr'... (diff)
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perf probe: Fix to get the DW_AT_decl_file and DW_AT_call_file as unsinged data
DWARF version 5 standard Sec 2.14 says that Any debugging information entry representing the declaration of an object, module, subprogram or type may have DW_AT_decl_file, DW_AT_decl_line and DW_AT_decl_column attributes, each of whose value is an unsigned integer constant. So it should be an unsigned integer data. Also, even though the standard doesn't clearly say the DW_AT_call_file is signed or unsigned, the elfutils (eu-readelf) interprets it as unsigned integer data and it is natural to handle it as unsigned integer data as same as DW_AT_decl_file. This changes the DW_AT_call_file as unsigned integer data too. Fixes: 3f4460a28fb2f73d ("perf probe: Filter out redundant inline-instances") Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/166761727445.480106.3738447577082071942.stgit@devnote3 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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