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selftests/bpf: Adding pid filtering for atomics test 

This make atomics test able to run in parallel with other tests.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-11-fallentree@fb.com
This commit is contained in:
Yucong Sun 2021-10-06 11:56:15 -07:00 committed by Andrii Nakryiko
parent 445e72c782
commit 0f4feacc91
2 changed files with 17 additions and 0 deletions
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1
tools/testing/selftests/bpf/prog_tests/atomics.c
View File

@ -225,6 +225,7 @@ void test_atomics(void)
test__skip();
goto cleanup;
}
skel->bss->pid = getpid();
if (test__start_subtest("add"))
test_add(skel);

16
tools/testing/selftests/bpf/progs/atomics.c
View File

@ -10,6 +10,8 @@ bool skip_tests __attribute((__section__(".data"))) = false;
bool skip_tests = true;
#endif
__u32 pid = 0;
__u64 add64_value = 1;
__u64 add64_result = 0;
__u32 add32_value = 1;
@ -21,6 +23,8 @@ __u64 add_noreturn_value = 1;
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(add, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
__u64 add_stack_value = 1;
@ -45,6 +49,8 @@ __s64 sub_noreturn_value = 1;
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(sub, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
__u64 sub_stack_value = 1;
@ -67,6 +73,8 @@ __u64 and_noreturn_value = (0x110ull << 32);
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(and, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
and64_result = __sync_fetch_and_and(&and64_value, 0x011ull << 32);
@ -86,6 +94,8 @@ __u64 or_noreturn_value = (0x110ull << 32);
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(or, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
or64_result = __sync_fetch_and_or(&or64_value, 0x011ull << 32);
or32_result = __sync_fetch_and_or(&or32_value, 0x011);
@ -104,6 +114,8 @@ __u64 xor_noreturn_value = (0x110ull << 32);
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(xor, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
xor64_result = __sync_fetch_and_xor(&xor64_value, 0x011ull << 32);
xor32_result = __sync_fetch_and_xor(&xor32_value, 0x011);
@ -123,6 +135,8 @@ __u32 cmpxchg32_result_succeed = 0;
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(cmpxchg, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
cmpxchg64_result_fail = __sync_val_compare_and_swap(&cmpxchg64_value, 0, 3);
cmpxchg64_result_succeed = __sync_val_compare_and_swap(&cmpxchg64_value, 1, 2);
@ -142,6 +156,8 @@ __u32 xchg32_result = 0;
SEC("fentry/bpf_fentry_test1")
int BPF_PROG(xchg, int a)
{
if (pid != (bpf_get_current_pid_tgid() >> 32))
return 0;
#ifdef ENABLE_ATOMICS_TESTS
__u64 val64 = 2;
__u32 val32 = 2;