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authorHao Luo <haoluo@google.com>2020-09-30 02:50:46 +0300
committerAlexei Starovoitov <ast@kernel.org>2020-10-03 00:59:25 +0300
commit2c2f6abeff1322a61f5ad7ce0ecccabf53e4fad5 (patch)
tree65be728aef8c734b3eedcf5ab6a86754866360f6 /tools/testing/selftests/bpf/trace_helpers.h
parentd370bbe1214381f444cbd9cdf3b8647223abb536 (diff)
downloadlinux-2c2f6abeff1322a61f5ad7ce0ecccabf53e4fad5.tar.xz
selftests/bpf: Ksyms_btf to test typed ksyms
Selftests for typed ksyms. Tests two types of ksyms: one is a struct, the other is a plain int. This tests two paths in the kernel. Struct ksyms will be converted into PTR_TO_BTF_ID by the verifier while int typed ksyms will be converted into PTR_TO_MEM. Signed-off-by: Hao Luo <haoluo@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200929235049.2533242-4-haoluo@google.com
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.h')
-rw-r--r--tools/testing/selftests/bpf/trace_helpers.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/trace_helpers.h b/tools/testing/selftests/bpf/trace_helpers.h
index 25ef597dd03f..f62fdef9e589 100644
--- a/tools/testing/selftests/bpf/trace_helpers.h
+++ b/tools/testing/selftests/bpf/trace_helpers.h
@@ -12,6 +12,10 @@ struct ksym {
int load_kallsyms(void);
struct ksym *ksym_search(long key);
long ksym_get_addr(const char *name);
+
+/* open kallsyms and find addresses on the fly, faster than load + search. */
+int kallsyms_find(const char *sym, unsigned long long *addr);
+
void read_trace_pipe(void);
#endif