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selftests/bpf: fix perf_buffer on s390 

perf_buffer test fails for exactly the same reason test_attach_probe
used to fail: different nanosleep syscall kprobe name.

Reuse the test_attach_probe fix.

Fixes: ee5cf82ce0 ("selftests/bpf: test perf buffer API")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
alistair/sunxi64-5.4-dsi
Ilya Leoshkevich 2019-07-16 14:58:27 +02:00 committed by Alexei Starovoitov
parent 9d1f62a6dc
commit 1cb59a6074
3 changed files with 11 additions and 17 deletions
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12
tools/testing/selftests/bpf/prog_tests/attach_probe.c
View File

@ -21,14 +21,6 @@ ssize_t get_base_addr() {
return -EINVAL;
}
#ifdef __x86_64__
#define SYS_KPROBE_NAME "__x64_sys_nanosleep"
#elif defined(__s390x__)
#define SYS_KPROBE_NAME "__s390x_sys_nanosleep"
#else
#define SYS_KPROBE_NAME "sys_nanosleep"
#endif
void test_attach_probe(void)
{
const char *kprobe_name = "kprobe/sys_nanosleep";
@ -86,7 +78,7 @@ void test_attach_probe(void)
kprobe_link = bpf_program__attach_kprobe(kprobe_prog,
false /* retprobe */,
SYS_KPROBE_NAME);
SYS_NANOSLEEP_KPROBE_NAME);
if (CHECK(IS_ERR(kprobe_link), "attach_kprobe",
"err %ld\n", PTR_ERR(kprobe_link))) {
kprobe_link = NULL;
@ -94,7 +86,7 @@ void test_attach_probe(void)
}
kretprobe_link = bpf_program__attach_kprobe(kretprobe_prog,
true /* retprobe */,
SYS_KPROBE_NAME);
SYS_NANOSLEEP_KPROBE_NAME);
if (CHECK(IS_ERR(kretprobe_link), "attach_kretprobe",
"err %ld\n", PTR_ERR(kretprobe_link))) {
kretprobe_link = NULL;

8
tools/testing/selftests/bpf/prog_tests/perf_buffer.c
View File

@ -5,12 +5,6 @@
#include <sys/socket.h>
#include <test_progs.h>
#ifdef __x86_64__
#define SYS_KPROBE_NAME "__x64_sys_nanosleep"
#else
#define SYS_KPROBE_NAME "sys_nanosleep"
#endif
static void on_sample(void *ctx, int cpu, void *data, __u32 size)
{
int cpu_data = *(int *)data, duration = 0;
@ -56,7 +50,7 @@ void test_perf_buffer(void)
/* attach kprobe */
link = bpf_program__attach_kprobe(prog, false /* retprobe */,
SYS_KPROBE_NAME);
SYS_NANOSLEEP_KPROBE_NAME);
if (CHECK(IS_ERR(link), "attach_kprobe", "err %ld\n", PTR_ERR(link)))
goto out_close;

8
tools/testing/selftests/bpf/test_progs.h
View File

@ -92,3 +92,11 @@ int compare_map_keys(int map1_fd, int map2_fd);
int compare_stack_ips(int smap_fd, int amap_fd, int stack_trace_len);
int extract_build_id(char *build_id, size_t size);
void *spin_lock_thread(void *arg);
#ifdef __x86_64__
#define SYS_NANOSLEEP_KPROBE_NAME "__x64_sys_nanosleep"
#elif defined(__s390x__)
#define SYS_NANOSLEEP_KPROBE_NAME "__s390x_sys_nanosleep"
#else
#define SYS_NANOSLEEP_KPROBE_NAME "sys_nanosleep"
#endif