diff options
| -rw-r--r-- | tools/perf/tests/builtin-test.c | 1 | ||||
| -rw-r--r-- | tools/perf/tests/tests.h | 1 | ||||
| -rw-r--r-- | tools/perf/tests/workloads/Build | 2 | ||||
| -rw-r--r-- | tools/perf/tests/workloads/inlineloop.c | 52 |
4 files changed, 56 insertions, 0 deletions
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index bd6ffa8e4578..e2490652f030 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -153,6 +153,7 @@ static struct test_workload *workloads[] = { &workload__datasym, &workload__landlock, &workload__traploop, + &workload__inlineloop, }; #define workloads__for_each(workload) \ diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index cb67ddbd0375..1f0f8b267fb1 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -240,6 +240,7 @@ DECLARE_WORKLOAD(brstack); DECLARE_WORKLOAD(datasym); DECLARE_WORKLOAD(landlock); DECLARE_WORKLOAD(traploop); +DECLARE_WORKLOAD(inlineloop); extern const char *dso_to_test; extern const char *test_objdump_path; diff --git a/tools/perf/tests/workloads/Build b/tools/perf/tests/workloads/Build index fb1012cc4fc3..866a00bd14a0 100644 --- a/tools/perf/tests/workloads/Build +++ b/tools/perf/tests/workloads/Build @@ -8,9 +8,11 @@ perf-test-y += brstack.o perf-test-y += datasym.o perf-test-y += landlock.o perf-test-y += traploop.o +perf-test-y += inlineloop.o CFLAGS_sqrtloop.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE CFLAGS_leafloop.o = -g -O0 -fno-inline -fno-omit-frame-pointer -U_FORTIFY_SOURCE CFLAGS_brstack.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE CFLAGS_datasym.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE CFLAGS_traploop.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE +CFLAGS_inlineloop.o = -g -O2 diff --git a/tools/perf/tests/workloads/inlineloop.c b/tools/perf/tests/workloads/inlineloop.c new file mode 100644 index 000000000000..bc82dfc7c410 --- /dev/null +++ b/tools/perf/tests/workloads/inlineloop.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <pthread.h> +#include <stdlib.h> +#include <signal.h> +#include <unistd.h> +#include <linux/compiler.h> +#include "../tests.h" + +static volatile int a; +static volatile sig_atomic_t done; + +static void sighandler(int sig __maybe_unused) +{ + done = 1; +} + +static inline void __attribute__((always_inline)) leaf(int b) +{ +again: + a += b; + if (!done) + goto again; +} + +static inline void __attribute__((always_inline)) middle(int b) +{ + leaf(b); +} + +static noinline void parent(int b) +{ + middle(b); +} + +static int inlineloop(int argc, const char **argv) +{ + int sec = 1; + + pthread_setname_np(pthread_self(), "perf-inlineloop"); + if (argc > 0) + sec = atoi(argv[0]); + + signal(SIGINT, sighandler); + signal(SIGALRM, sighandler); + alarm(sec); + + parent(sec); + + return 0; +} + +DEFINE_WORKLOAD(inlineloop); |