diff --git a/benchmarks/inttypes_benchmark.cpp b/benchmarks/inttypes_benchmark.cpp
index f123eb8..b96384e 100644
--- a/benchmarks/inttypes_benchmark.cpp
+++ b/benchmarks/inttypes_benchmark.cpp
@@ -19,16 +19,5 @@
 #include <benchmark/benchmark.h>
 #include "util.h"
 
-void BM_inttypes_strtoimax(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    strtoimax(" -123", nullptr, 0);
-  }
-}
-BIONIC_BENCHMARK(BM_inttypes_strtoimax);
-
-void BM_inttypes_strtoumax(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    strtoumax(" -123", nullptr, 0);
-  }
-}
-BIONIC_BENCHMARK(BM_inttypes_strtoumax);
+BIONIC_TRIVIAL_BENCHMARK(BM_inttypes_strtoimax, strtoimax(" -123", nullptr, 0));
+BIONIC_TRIVIAL_BENCHMARK(BM_inttypes_strtoumax, strtoumax(" -123", nullptr, 0));
diff --git a/benchmarks/stdlib_benchmark.cpp b/benchmarks/stdlib_benchmark.cpp
index 6afe7aa..ec3f6f2 100644
--- a/benchmarks/stdlib_benchmark.cpp
+++ b/benchmarks/stdlib_benchmark.cpp
@@ -216,45 +216,9 @@
 }
 BIONIC_BENCHMARK_WITH_ARG(BM_stdlib_mbrtowc, "0");
 
-void BM_stdlib_atoi(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(atoi(" -123"));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_atoi);
-
-void BM_stdlib_atol(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(atol(" -123"));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_atol);
-
-void BM_stdlib_strtol(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(strtol(" -123", nullptr, 0));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_strtol);
-
-void BM_stdlib_strtoll(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(strtoll(" -123", nullptr, 0));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_strtoll);
-
-void BM_stdlib_strtoul(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(strtoul(" -123", nullptr, 0));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_strtoul);
-
-void BM_stdlib_strtoull(benchmark::State& state) {
-  for (auto _ : state) {
-    benchmark::DoNotOptimize(strtoull(" -123", nullptr, 0));
-  }
-}
-BIONIC_BENCHMARK(BM_stdlib_strtoull);
-
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_atoi, atoi(" -123"));
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_atol, atol(" -123"));
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_strtol, strtol(" -123", nullptr, 0));
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_strtoll, strtoll(" -123", nullptr, 0));
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_strtoul, strtoul(" -123", nullptr, 0));
+BIONIC_TRIVIAL_BENCHMARK(BM_stdlib_strtoull, strtoull(" -123", nullptr, 0));
diff --git a/benchmarks/unistd_benchmark.cpp b/benchmarks/unistd_benchmark.cpp
index 98e8858..d697dfd 100644
--- a/benchmarks/unistd_benchmark.cpp
+++ b/benchmarks/unistd_benchmark.cpp
@@ -20,37 +20,11 @@
 #include <benchmark/benchmark.h>
 #include "util.h"
 
-static void BM_unistd_getpid(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    getpid();
-  }
-}
-BIONIC_BENCHMARK(BM_unistd_getpid);
+BIONIC_TRIVIAL_BENCHMARK(BM_unistd_getpid, getpid());
+BIONIC_TRIVIAL_BENCHMARK(BM_unistd_getpid_syscall, syscall(__NR_getpid));
 
-static void BM_unistd_getpid_syscall(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    syscall(__NR_getpid);
-  }
-}
-BIONIC_BENCHMARK(BM_unistd_getpid_syscall);
-
+// TODO: glibc 2.30 added gettid() too.
 #if defined(__BIONIC__)
-
-// Stop GCC optimizing out our pure function.
-/* Must not be static! */ pid_t (*gettid_fp)() = gettid;
-
-static void BM_unistd_gettid(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    gettid_fp();
-  }
-}
-BIONIC_BENCHMARK(BM_unistd_gettid);
-
+BIONIC_TRIVIAL_BENCHMARK(BM_unistd_gettid, gettid());
 #endif
-
-void BM_unistd_gettid_syscall(benchmark::State& state) {
-  while (state.KeepRunning()) {
-    syscall(__NR_gettid);
-  }
-}
-BIONIC_BENCHMARK(BM_unistd_gettid_syscall);
+BIONIC_TRIVIAL_BENCHMARK(BM_unistd_gettid_syscall, syscall(__NR_gettid));
diff --git a/benchmarks/util.h b/benchmarks/util.h
index 0813acc..ef4892d 100644
--- a/benchmarks/util.h
+++ b/benchmarks/util.h
@@ -41,6 +41,13 @@
 #define BIONIC_BENCHMARK_WITH_ARG(n, arg) \
   int _bionic_benchmark_##n __attribute__((unused)) = EmplaceBenchmark(std::string(#n), reinterpret_cast<benchmark_func_t>(n), arg)
 
+#define BIONIC_TRIVIAL_BENCHMARK(__name, __expression) \
+  static void __name(benchmark::State& state) { \
+    for (auto _ : state) { \
+      benchmark::DoNotOptimize(__expression); \
+    } \
+  } \
+  BIONIC_BENCHMARK(__name)
 
 constexpr auto KB = 1024;
 
diff --git a/benchmarks/wctype_benchmark.cpp b/benchmarks/wctype_benchmark.cpp
index f030ddc..cdf5568 100644
--- a/benchmarks/wctype_benchmark.cpp
+++ b/benchmarks/wctype_benchmark.cpp
@@ -19,58 +19,14 @@
 #include <benchmark/benchmark.h>
 #include "util.h"
 
-static void BM_wctype_towlower_ascii_y(benchmark::State& state) {
-  for (auto _ : state) {
-    towlower('X');
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towlower_ascii_y);
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towlower_ascii_y, towlower('X'));
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towlower_ascii_n, towlower('x'));
 
-static void BM_wctype_towlower_ascii_n(benchmark::State& state) {
-  for (auto _ : state) {
-    towlower('x');
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towlower_ascii_n);
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towlower_unicode_y, towlower(0x0391));
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towlower_unicode_n, towlower(0x03b1));
 
-static void BM_wctype_towlower_unicode_y(benchmark::State& state) {
-  for (auto _ : state) {
-    towlower(0x0391);
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towlower_unicode_y);
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towupper_ascii_y, towupper('x'));
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towupper_ascii_n, towupper('X'));
 
-static void BM_wctype_towlower_unicode_n(benchmark::State& state) {
-  for (auto _ : state) {
-    towlower(0x03b1);
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towlower_unicode_n);
-
-static void BM_wctype_towupper_ascii_y(benchmark::State& state) {
-  for (auto _ : state) {
-    towupper('x');
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towupper_ascii_y);
-
-static void BM_wctype_towupper_ascii_n(benchmark::State& state) {
-  for (auto _ : state) {
-    towupper('X');
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towupper_ascii_n);
-
-static void BM_wctype_towupper_unicode_y(benchmark::State& state) {
-  for (auto _ : state) {
-    towupper(0x03b1);
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towupper_unicode_y);
-
-static void BM_wctype_towupper_unicode_n(benchmark::State& state) {
-  for (auto _ : state) {
-    towupper(0x0391);
-  }
-}
-BIONIC_BENCHMARK(BM_wctype_towupper_unicode_n);
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towupper_unicode_y, towupper(0x03b1));
+BIONIC_TRIVIAL_BENCHMARK(BM_wctype_towupper_unicode_n, towupper(0x0391));