[PATCH 10/52] perf dso: Add dso__has_symbols() method

From: Arnaldo Carvalho de Melo
Date: Wed May 02 2018 - 11:20:50 EST


From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

To replace longer code sequences in various places.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-tlk3klbkfyjrbfjvryyznfju@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-report.c | 2 +-
tools/perf/builtin-top.c | 4 ++--
tools/perf/util/dso.h | 5 +++++
3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 0f198f6d9b77..a4104e447f56 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -525,7 +525,7 @@ static void report__warn_kptr_restrict(const struct report *rep)

if (kernel_map) {
const struct dso *kdso = kernel_map->dso;
- if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
+ if (dso__has_symbols(kdso, MAP__FUNCTION)) {
desc = "If some relocation was applied (e.g. "
"kexec) symbols may be misresolved.";
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 4e975f3ee3be..c11b46b411d5 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -742,7 +742,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
"Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
"Check /proc/sys/kernel/kptr_restrict.\n\n"
"Kernel%s samples will not be resolved.\n",
- al.map && !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ?
+ al.map && dso__has_symbols(al.map->dso, MAP__FUNCTION) ?
" modules" : "");
if (use_browser <= 0)
sleep(5);
@@ -765,7 +765,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
*/
if (!machine->kptr_restrict_warned && !top->vmlinux_warned &&
__map__is_kernel(al.map) &&
- RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
+ dso__has_symbols(al.map->dso, MAP__FUNCTION)) {
if (symbol_conf.vmlinux_name) {
char serr[256];
dso__strerror_load(al.map->dso, serr, sizeof(serr));
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index c229dbe0277a..881d572be6aa 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -233,6 +233,11 @@ static inline void __dso__zput(struct dso **dso)

bool dso__loaded(const struct dso *dso, enum map_type type);

+static inline bool dso__has_symbols(const struct dso *dso, enum map_type type)
+{
+ return !RB_EMPTY_ROOT(&dso->symbols[type]);
+}
+
bool dso__sorted_by_name(const struct dso *dso, enum map_type type);
void dso__set_sorted_by_name(struct dso *dso, enum map_type type);
void dso__sort_by_name(struct dso *dso, enum map_type type);
--
2.14.3