Commit-ID: a7c3899c06865c75f8887f33d9043f6e8e780e71
Gitweb: http://git.kernel.org/tip/a7c3899c06865c75f8887f33d9043f6e8e780e71
Author: Arnaldo Carvalho de Melo <a...@redhat.com>
AuthorDate: Mon, 13 Feb 2017 16:52:15 -0300
Committer: Arnaldo Carvalho de Melo <a...@redhat.com>
CommitDate: Mon, 13 Feb 2017 17:22:34 -0300
perf symbols: No need to check if sym->name is NULL
As it is an array, so will always evaluate to 'true', as reported by
clang:
builtin-sched.c:2070:19: error: address of array 'sym->name' will always
evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
if (sym && sym->name) {
~~ ~~~~~^~~~
1 warning generated.
So just ditch all those useless checks.
Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Wang Nan <wangn...@huawei.com>
Link: http://lkml.kernel.org/n/tip-ydpm927col06paixb775j...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/builtin-kmem.c | 4 ++--
tools/perf/builtin-sched.c | 2 +-
tools/perf/util/evsel_fprintf.c | 1 -
tools/perf/util/machine.c | 2 +-
tools/perf/util/symbol_fprintf.c | 2 +-
5 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 29f4751..6da8d08 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -1065,7 +1065,7 @@ static void __print_page_alloc_result(struct perf_session
*session, int n_lines)
data = rb_entry(next, struct page_stat, node);
sym = machine__find_kernel_function(machine, data->callsite,
&map);
- if (sym && sym->name)
+ if (sym)
caller = sym->name;
else
scnprintf(buf, sizeof(buf), "%"PRIx64, data->callsite);
@@ -1107,7 +1107,7 @@ static void __print_page_caller_result(struct
perf_session *session, int n_lines
data = rb_entry(next, struct page_stat, node);
sym = machine__find_kernel_function(machine, data->callsite,
&map);
- if (sym && sym->name)
+ if (sym)
caller = sym->name;
else
scnprintf(buf, sizeof(buf), "%"PRIx64, data->callsite);
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index daceb32..270eb2d 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -2067,7 +2067,7 @@ static void save_task_callchain(struct perf_sched *sched,
break;
sym = node->sym;
- if (sym && sym->name) {
+ if (sym) {
if (!strcmp(sym->name, "schedule") ||
!strcmp(sym->name, "__schedule") ||
!strcmp(sym->name, "preempt_schedule"))
diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c
index 6b29255..4ef5184 100644
--- a/tools/perf/util/evsel_fprintf.c
+++ b/tools/perf/util/evsel_fprintf.c
@@ -168,7 +168,6 @@ int sample__fprintf_callchain(struct perf_sample *sample,
int left_alignment,
if (symbol_conf.bt_stop_list &&
node->sym &&
- node->sym->name &&
strlist__has_entry(symbol_conf.bt_stop_list,
node->sym->name)) {
break;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 747a034..a1043cf 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1565,7 +1565,7 @@ int machine__process_event(struct machine *machine, union
perf_event *event,
static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
{
- if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
+ if (!regexec(regex, sym->name, 0, NULL, 0))
return 1;
return 0;
}
diff --git a/tools/perf/util/symbol_fprintf.c b/tools/perf/util/symbol_fprintf.c
index 7c6b33e..63694e1 100644
--- a/tools/perf/util/symbol_fprintf.c
+++ b/tools/perf/util/symbol_fprintf.c
@@ -21,7 +21,7 @@ size_t __symbol__fprintf_symname_offs(const struct symbol
*sym,
unsigned long offset;
size_t length;
- if (sym && sym->name) {
+ if (sym) {
length = fprintf(fp, "%s", sym->name);
if (al && print_offsets) {
if (al->addr < sym->end)
