diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2023-01-31 16:16:20 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-02-02 03:49:29 +0300 |
| commit | 05963491c094ca3de397ef0cfe5537b666ae4412 (patch) | |
| tree | b86ec3d7969790729e9d8635b4289b7efd89c65c /tools/perf | |
| parent | 78250284b157490122106516470ec6c40ead3986 (diff) | |
| download | linux-05963491c094ca3de397ef0cfe5537b666ae4412.tar.xz | |
perf symbols: Record whether a symbol is an alias for an IFUNC symbol
To assist with synthesizing plt symbols for IFUNCs, record whether a
symbol is an alias of an IFUNC symbol.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230131131625.6964-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/symbol.c | 4 | ||||
| -rw-r--r-- | tools/perf/util/symbol.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a024f06f75d8..d05727fcb30d 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -201,10 +201,14 @@ again: continue; if (choose_best_symbol(curr, next) == SYMBOL_A) { + if (next->type == STT_GNU_IFUNC) + curr->ifunc_alias = true; rb_erase_cached(&next->rb_node, symbols); symbol__delete(next); goto again; } else { + if (curr->type == STT_GNU_IFUNC) + next->ifunc_alias = true; nd = rb_next(&curr->rb_node); rb_erase_cached(&curr->rb_node, symbols); symbol__delete(curr); diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 2fdeb22bd02f..7558735543c2 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -64,6 +64,8 @@ struct symbol { u8 inlined:1; /** Has symbol__annotate2 been performed. */ u8 annotate2:1; + /** Symbol is an alias of an STT_GNU_IFUNC */ + u8 ifunc_alias:1; /** Architecture specific. Unused except on PPC where it holds st_other. */ u8 arch_sym; /** The name of length namelen associated with the symbol. */ |