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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-04-24 17:24:49 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-04-26 19:47:07 +0300
commit4546263d72e22ea84b49dafad26d8ca679d5e83d (patch)
treefa9d0ee378ceaf87c5cdc5d10f978f1dd0072e8e /tools/perf/util/unwind-libdw.c
parentea40b6d3222e5feef178d9b49baead28e9b5fe20 (diff)
downloadlinux-4546263d72e22ea84b49dafad26d8ca679d5e83d.tar.xz
perf thread: Introduce thread__find_symbol()
Out of thread__find_addr_location(..., MAP__FUNCTION, ...), idea here is to continue removing references to MAP__{FUNCTION,VARIABLE} ahead of getting both types of symbols in the same rbtree, as various places do two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE. So thread__find_symbol() will eventually do just that, and 'struct symbol' will have the symbol type, for code that cares about that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-n7528en9e08yd3flzmb26tth@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/unwind-libdw.c')
-rw-r--r--tools/perf/util/unwind-libdw.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index 1ce8744649b5..bdc22f1864df 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -28,10 +28,11 @@ static int __report_module(struct addr_location *al, u64 ip,
{
Dwfl_Module *mod;
struct dso *dso = NULL;
-
- thread__find_addr_location(ui->thread,
- PERF_RECORD_MISC_USER,
- MAP__FUNCTION, ip, al);
+ /*
+ * Some callers will use al->sym, so we can't just use the
+ * cheaper thread__find_map() here.
+ */
+ thread__find_symbol(ui->thread, PERF_RECORD_MISC_USER, ip, al);
if (al->map)
dso = al->map->dso;