[PATCH bpf-next 33/35] bpf: selftests: don't touch RLIMIT_MEMLOCK

[Roman Gushchin]

Since bpf is not using memlock rlimit for memory accounting,
there are no more reasons to bump the limit.

Signed-off-by: Roman Gushchin <g...@fb.com>
---
 tools/testing/selftests/bpf/bench.c           | 16 ---------------
 .../selftests/bpf/progs/bpf_iter_bpf_map.c    |  5 ++---
 tools/testing/selftests/bpf/xdping.c          |  6 ------
 tools/testing/selftests/net/reuseport_bpf.c   | 20 -------------------
 4 files changed, 2 insertions(+), 45 deletions(-)

diff --git a/tools/testing/selftests/bpf/bench.c 
b/tools/testing/selftests/bpf/bench.c
index 944ad4721c83..f66610541c8a 100644
--- a/tools/testing/selftests/bpf/bench.c
+++ b/tools/testing/selftests/bpf/bench.c
@@ -29,25 +29,9 @@ static int libbpf_print_fn(enum libbpf_print_level level,
        return vfprintf(stderr, format, args);
 }
 
-static int bump_memlock_rlimit(void)
-{
-       struct rlimit rlim_new = {
-               .rlim_cur       = RLIM_INFINITY,
-               .rlim_max       = RLIM_INFINITY,
-       };
-
-       return setrlimit(RLIMIT_MEMLOCK, &rlim_new);
-}
-
 void setup_libbpf()
 {
-       int err;
-
        libbpf_set_print(libbpf_print_fn);
-
-       err = bump_memlock_rlimit();
-       if (err)
-               fprintf(stderr, "failed to increase RLIMIT_MEMLOCK: %d", err);
 }
 
 void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns)
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c 
b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c
index 08651b23edba..5fe76df58dd4 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c
@@ -19,10 +19,9 @@ int dump_bpf_map(struct bpf_iter__bpf_map *ctx)
        }
 
        if (seq_num == 0)
-               BPF_SEQ_PRINTF(seq, "      id   refcnt  usercnt  locked_vm\n");
+               BPF_SEQ_PRINTF(seq, "      id   refcnt  usercnt\n");
 
        BPF_SEQ_PRINTF(seq, "%8u %8ld %8ld %10lu\n", map->id, 
map->refcnt.counter,
-                      map->usercnt.counter,
-                      map->memory.user->locked_vm.counter);
+                      map->usercnt.counter);
        return 0;
 }
diff --git a/tools/testing/selftests/bpf/xdping.c 
b/tools/testing/selftests/bpf/xdping.c
index 842d9155d36c..488021169171 100644
--- a/tools/testing/selftests/bpf/xdping.c
+++ b/tools/testing/selftests/bpf/xdping.c
@@ -88,7 +88,6 @@ int main(int argc, char **argv)
 {
        __u32 mode_flags = XDP_FLAGS_DRV_MODE | XDP_FLAGS_SKB_MODE;
        struct addrinfo *a, hints = { .ai_family = AF_INET };
-       struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
        __u16 count = XDPING_DEFAULT_COUNT;
        struct pinginfo pinginfo = { 0 };
        const char *optstr = "c:I:NsS";
@@ -166,11 +165,6 @@ int main(int argc, char **argv)
                freeaddrinfo(a);
        }
 
-       if (setrlimit(RLIMIT_MEMLOCK, &r)) {
-               perror("setrlimit(RLIMIT_MEMLOCK)");
-               return 1;
-       }
-
        snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
 
        if (bpf_prog_load(filename, BPF_PROG_TYPE_XDP, &obj, &prog_fd)) {
diff --git a/tools/testing/selftests/net/reuseport_bpf.c 
b/tools/testing/selftests/net/reuseport_bpf.c
index b5277106df1f..88709898bae5 100644
--- a/tools/testing/selftests/net/reuseport_bpf.c
+++ b/tools/testing/selftests/net/reuseport_bpf.c
@@ -437,26 +437,6 @@ void enable_fastopen(void)
        }
 }
 
-static struct rlimit rlim_old;
-
-static  __attribute__((constructor)) void main_ctor(void)
-{
-       getrlimit(RLIMIT_MEMLOCK, &rlim_old);
-
-       if (rlim_old.rlim_cur != RLIM_INFINITY) {
-               struct rlimit rlim_new;
-
-               rlim_new.rlim_cur = rlim_old.rlim_cur + (1UL << 20);
-               rlim_new.rlim_max = rlim_old.rlim_max + (1UL << 20);
-               setrlimit(RLIMIT_MEMLOCK, &rlim_new);
-       }
-}
-
-static __attribute__((destructor)) void main_dtor(void)
-{
-       setrlimit(RLIMIT_MEMLOCK, &rlim_old);
-}
-
 int main(void)
 {
        fprintf(stderr, "---- IPv4 UDP ----\n");
-- 
2.26.2