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authorIlya Leoshkevich <iii@linux.ibm.com>2020-09-10 20:13:36 +0300
committerAlexei Starovoitov <ast@kernel.org>2020-09-11 05:53:58 +0300
commit90a1deda75c6b749fb89310e4744554a4c36ea33 (patch)
treec09152db0d3413176ba8ec45ed76337a070c1700 /tools/testing/selftests/bpf/prog_tests/ksyms.c
parentd66423fbe11e141206f117b232916aa899d44959 (diff)
downloadlinux-90a1deda75c6b749fb89310e4744554a4c36ea33.tar.xz
selftests/bpf: Fix test_ksyms on non-SMP kernels
On non-SMP kernels __per_cpu_start is not 0, so look it up in kallsyms. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200910171336.3161995-1-iii@linux.ibm.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/ksyms.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/ksyms.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms.c b/tools/testing/selftests/bpf/prog_tests/ksyms.c
index e3d6777226a8..b771804b2342 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms.c
@@ -32,6 +32,7 @@ out:
void test_ksyms(void)
{
+ __u64 per_cpu_start_addr = kallsyms_find("__per_cpu_start");
__u64 link_fops_addr = kallsyms_find("bpf_link_fops");
const char *btf_path = "/sys/kernel/btf/vmlinux";
struct test_ksyms *skel;
@@ -63,8 +64,9 @@ void test_ksyms(void)
"got %llu, exp %llu\n", data->out__bpf_link_fops1, (__u64)0);
CHECK(data->out__btf_size != btf_size, "btf_size",
"got %llu, exp %llu\n", data->out__btf_size, btf_size);
- CHECK(data->out__per_cpu_start != 0, "__per_cpu_start",
- "got %llu, exp %llu\n", data->out__per_cpu_start, (__u64)0);
+ CHECK(data->out__per_cpu_start != per_cpu_start_addr, "__per_cpu_start",
+ "got %llu, exp %llu\n", data->out__per_cpu_start,
+ per_cpu_start_addr);
cleanup:
test_ksyms__destroy(skel);