On 7/1/22 2:27 AM, Alan Maguire wrote:
add subtest verifying BPF ksym iter behaviour. The BPF ksym iter program shows an example of dumping a format different to /proc/kallsyms. It adds KIND and MAX_SIZE fields which represent the kind of symbol (core kernel, module, ftrace, bpf, or kprobe) and the maximum size the symbol can be. The latter is calculated from the difference between current symbol value and the next symbol value. The key benefit for this iterator will likely be supporting in-kernel data-gathering rather than dumping symbol details to userspace and parsing the results. Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
LGTM. Thanks! Acked-by: Yonghong Song <yhs@xxxxxx>
--- tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 16 +++++ tools/testing/selftests/bpf/progs/bpf_iter_ksym.c | 71 +++++++++++++++++++++++ 2 files changed, 87 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_ksym.c diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c index 7ff5fa9..a33874b 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c @@ -27,6 +27,7 @@ #include "bpf_iter_test_kern5.skel.h" #include "bpf_iter_test_kern6.skel.h" #include "bpf_iter_bpf_link.skel.h" +#include "bpf_iter_ksym.skel.h"
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