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| author | Yonghong Song <yonghong.song@linux.dev> | 2024-03-26 07:15:13 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-03-29 04:31:41 +0300 |
| commit | d1f02581059e42d8daf944aae2a296254cc7a5d5 (patch) | |
| tree | f922a82d4fd55aca85b68c3b69c53468a05221a3 /tools/testing/selftests/bpf/trace_helpers.c | |
| parent | 9475dacb75e0b5efae086dc904f4d27c31f15157 (diff) | |
| download | linux-d1f02581059e42d8daf944aae2a296254cc7a5d5.tar.xz | |
selftests/bpf: Add {load,search}_kallsyms_custom_local()
These two functions allow selftests to do loading/searching
kallsyms based on their specific compare functions.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240326041513.1199440-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.c')
| -rw-r--r-- | tools/testing/selftests/bpf/trace_helpers.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c index fc9de4a89aea..7f45b4cb41fe 100644 --- a/tools/testing/selftests/bpf/trace_helpers.c +++ b/tools/testing/selftests/bpf/trace_helpers.c @@ -114,6 +114,11 @@ struct ksyms *load_kallsyms_local(void) return load_kallsyms_local_common(ksym_cmp); } +struct ksyms *load_kallsyms_custom_local(ksym_cmp_t cmp_cb) +{ + return load_kallsyms_local_common(cmp_cb); +} + int load_kallsyms(void) { pthread_mutex_lock(&ksyms_mutex); @@ -153,6 +158,28 @@ struct ksym *ksym_search_local(struct ksyms *ksyms, long key) return &ksyms->syms[0]; } +struct ksym *search_kallsyms_custom_local(struct ksyms *ksyms, const void *p, + ksym_search_cmp_t cmp_cb) +{ + int start = 0, mid, end = ksyms->sym_cnt; + struct ksym *ks; + int result; + + while (start < end) { + mid = start + (end - start) / 2; + ks = &ksyms->syms[mid]; + result = cmp_cb(p, ks); + if (result < 0) + end = mid; + else if (result > 0) + start = mid + 1; + else + return ks; + } + + return NULL; +} + struct ksym *ksym_search(long key) { if (!ksyms) |