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By introducing a tools/perf/util/btf.c to collect utilities not yet available via libbpf, the first being a way to find a member by name once we get the type_id for the struct. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
27 lines
632 B
C
27 lines
632 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Arnaldo Carvalho de Melo <acme@redhat.com>
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*
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* Copyright (C) 2024, Red Hat, Inc
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*/
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#include <bpf/btf.h>
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#include <util/btf.h>
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#include <string.h>
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const struct btf_member *__btf_type__find_member_by_name(struct btf *btf,
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int type_id, const char *member_name)
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{
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const struct btf_type *t = btf__type_by_id(btf, type_id);
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const struct btf_member *m;
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int i;
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for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) {
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const char *current_member_name = btf__name_by_offset(btf, m->name_off);
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if (!strcmp(current_member_name, member_name))
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return m;
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}
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return NULL;
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}
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