selftests/bpf: speedup test_maps

test_hashmap_walk takes very long time on debug kernel with kasan on.
Reduce the number of iterations in this test without sacrificing
test coverage.
Also add printfs as progress indicator.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 10 insertions, 6 deletions

diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 040356ecc862..f0d2f09898a3 100644
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -242,7 +242,7 @@ static void test_hashmap_percpu(int task, void *data)
 
 static void test_hashmap_walk(int task, void *data)
 {
-        int fd, i, max_entries = 100000;
+        int fd, i, max_entries = 1000;
         long long key, value, next_key;
         bool next_key_valid = true;
 
@@ -931,8 +931,12 @@ static void test_map_large(void)
         close(fd);
 }
 
-static void run_parallel(int tasks, void (*fn)(int task, void *data),
-                         void *data)
+#define run_parallel(N, FN, DATA) \
+        printf("Fork %d tasks to '" #FN "'\n", N); \
+        __run_parallel(N, FN, DATA)
+
+static void __run_parallel(int tasks, void (*fn)(int task, void *data),
+                           void *data)
 {
         pid_t pid[tasks];
         int i;
@@ -972,7 +976,7 @@ static void test_map_stress(void)
 #define DO_UPDATE 1
 #define DO_DELETE 0
 
-static void do_work(int fn, void *data)
+static void test_update_delete(int fn, void *data)
 {
         int do_update = ((int *)data)[1];
         int fd = ((int *)data)[0];
@@ -1012,7 +1016,7 @@ static void test_map_parallel(void)
          */
         data[0] = fd;
         data[1] = DO_UPDATE;
-        run_parallel(TASKS, do_work, data);
+        run_parallel(TASKS, test_update_delete, data);
 
         /* Check that key=0 is already there. */
         assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
@@ -1035,7 +1039,7 @@ static void test_map_parallel(void)
 
         /* Now let's delete all elemenets in parallel. */
         data[1] = DO_DELETE;
-        run_parallel(TASKS, do_work, data);
+        run_parallel(TASKS, test_update_delete, data);
 
         /* Nothing should be left. */
         key = -1;