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Gunderson" , Stephen Brennan , Chun-Tse Shao , Yujie Liu , "Dr. David Alan Gilbert" , Levi Yun , Howard Chu , Weilin Wang , Thomas Falcon , Matt Fleming , Veronika Molnarova , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , Zixian Cai , Steve Clevenger , Ben Gainey , Chaitanya S Prakash , Martin Liska , "=?UTF-8?q?Martin=20Li=C5=A1ka?=" , Song Liu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The perf_env global variable holds the host perf_env data but its use is hit and miss. Switch to using local perf_env variables and ensure scoped perf_env__init and perf_env__exit. This loses command line setting of the perf_env, but this doesn't matter for tests. So the perf_env is fully initialized, clear it with memset in perf_env__init. Signed-off-by: Ian Rogers --- tools/perf/tests/code-reading.c | 5 +++- tools/perf/tests/dlfilter-test.c | 50 ++++++++++++++++++-------------- tools/perf/util/env.c | 1 + 3 files changed, 33 insertions(+), 23 deletions(-) diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-readin= g.c index cf6edbe697b2..4b2461e93b2b 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -651,11 +651,13 @@ static int do_test_code_reading(bool try_kcore) struct dso *dso; const char *events[] =3D { "cycles", "cycles:u", "cpu-clock", "cpu-clock:= u", NULL }; int evidx =3D 0; + struct perf_env host_env; =20 pid =3D getpid(); =20 machine =3D machine__new_host(); - machine->env =3D &perf_env; + perf_env__init(&host_env); + machine->env =3D &host_env; =20 ret =3D machine__create_kernel_maps(machine); if (ret < 0) { @@ -798,6 +800,7 @@ static int do_test_code_reading(bool try_kcore) perf_cpu_map__put(cpus); perf_thread_map__put(threads); machine__delete(machine); + perf_env__exit(&host_env); =20 return err; } diff --git a/tools/perf/tests/dlfilter-test.c b/tools/perf/tests/dlfilter-t= est.c index 54f59d1246bc..6427e3382711 100644 --- a/tools/perf/tests/dlfilter-test.c +++ b/tools/perf/tests/dlfilter-test.c @@ -319,11 +319,12 @@ static int run_perf_script(struct test_data *td) =20 static int test__dlfilter_test(struct test_data *td) { + struct perf_env host_env; u64 sample_type =3D TEST_SAMPLE_TYPE; pid_t pid =3D 12345; pid_t tid =3D 12346; u64 id =3D 99; - int err; + int err =3D TEST_OK; =20 if (get_dlfilters_path(td->name, td->dlfilters, PATH_MAX)) return test_result("dlfilters not found", TEST_SKIP); @@ -353,37 +354,42 @@ static int test__dlfilter_test(struct test_data *td) =20 pr_debug("Creating new host machine structure\n"); td->machine =3D machine__new_host(); - td->machine->env =3D &perf_env; + perf_env__init(&host_env); + td->machine->env =3D &host_env; =20 td->fd =3D creat(td->perf_data_file_name, 0644); if (td->fd < 0) return test_result("Failed to create test perf.data file", TEST_FAIL); =20 err =3D perf_header__write_pipe(td->fd); - if (err < 0) - return test_result("perf_header__write_pipe() failed", TEST_FAIL); - + if (err < 0) { + err =3D test_result("perf_header__write_pipe() failed", TEST_FAIL); + goto out; + } err =3D write_attr(td, sample_type, &id); - if (err) - return test_result("perf_event__synthesize_attr() failed", TEST_FAIL); - - if (write_comm(td->fd, pid, tid, "test-prog")) - return TEST_FAIL; - - if (write_mmap(td->fd, pid, tid, MAP_START, 0x10000, 0, td->prog_file_nam= e)) - return TEST_FAIL; - - if (write_sample(td, sample_type, id, pid, tid) !=3D TEST_OK) - return TEST_FAIL; - + if (err) { + err =3D test_result("perf_event__synthesize_attr() failed", TEST_FAIL); + goto out; + } + if (write_comm(td->fd, pid, tid, "test-prog")) { + err =3D TEST_FAIL; + goto out; + } + if (write_mmap(td->fd, pid, tid, MAP_START, 0x10000, 0, td->prog_file_nam= e)) { + err =3D TEST_FAIL; + goto out; + } + if (write_sample(td, sample_type, id, pid, tid) !=3D TEST_OK) { + err =3D TEST_FAIL; + goto out; + } if (verbose > 1) system_cmd("%s script -i %s -D", td->perf, td->perf_data_file_name); =20 - err =3D run_perf_script(td); - if (err) - return TEST_FAIL; - - return TEST_OK; + err =3D run_perf_script(td) ? TEST_FAIL : TEST_OK; +out: + perf_env__exit(&host_env); + return err; } =20 static void unlink_path(const char *path) diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c index 05a4f2657d72..887a6fb7104e 100644 --- a/tools/perf/util/env.c +++ b/tools/perf/util/env.c @@ -271,6 +271,7 @@ void perf_env__exit(struct perf_env *env) =20 void perf_env__init(struct perf_env *env) { + memset(env, 0, sizeof(*env)); #ifdef HAVE_LIBBPF_SUPPORT env->bpf_progs.infos =3D RB_ROOT; env->bpf_progs.btfs =3D RB_ROOT; --=20 2.50.0.727.gbf7dc18ff4-goog