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perf symbols: Parse NOTE segments until the build id is found

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In the ELF file, multiple NOTE segments may exist.
To locate the build id, the process shall persist
in parsing NOTE segments until the build id is found.

Signed-off-by: Chengen Du <chengen.du@canonical.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
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: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231130135723.17562-1-chengen.du@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Chengen Du 2023-11-30 21:57:23 +08:00 committed by Arnaldo Carvalho de Melo
parent 030ac3cad2
commit d0acce6828
1 changed files with 6 additions and 4 deletions
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10
tools/perf/util/symbol-minimal.c
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@ -159,9 +159,10 @@ int filename__read_build_id(const char *filename, struct build_id *bid)
goto out_free;
ret = read_build_id(buf, buf_size, bid, need_swap);
if (ret == 0)
if (ret == 0) {
ret = bid->size;
break;
break;
}
}
} else {
Elf64_Ehdr ehdr;
@ -210,9 +211,10 @@ int filename__read_build_id(const char *filename, struct build_id *bid)
goto out_free;
ret = read_build_id(buf, buf_size, bid, need_swap);
if (ret == 0)
if (ret == 0) {
ret = bid->size;
break;
break;
}
}
}
out_free: