bpf: lru: Cleanup test_lru_map.c

This patch does the following cleanup on test_lru_map.c
1) Fix indentation (Replace spaces by tabs)
2) Remove redundant BPF_F_NO_COMMON_LRU test
3) Simplify some comments
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/bpf/test_lru_map.c

@@ -191,12 +191,7 @@ static void test_lru_sanity1(int map_type, int map_flags, unsigned int tgt_free)
 	int next_cpu = 0;
 
 	if (map_flags & BPF_F_NO_COMMON_LRU)
-		/* Ther percpu lru list (i.e each cpu has its own LRU
-		 * list) does not have a local free list.  Hence,
-		 * it will only free old nodes till there is no free
-		 * from the LRU list.  Hence, this test does not apply
-		 * to BPF_F_NO_COMMON_LRU
-		 */
+		/* This test is only applicable to common LRU list */
 		return;
 
 	printf("%s (map_type:%d map_flags:0x%X): ", __func__, map_type,
@@ -273,12 +268,7 @@ static void test_lru_sanity2(int map_type, int map_flags, unsigned int tgt_free)
 	int next_cpu = 0;
 
 	if (map_flags & BPF_F_NO_COMMON_LRU)
-		/* Ther percpu lru list (i.e each cpu has its own LRU
-		 * list) does not have a local free list.  Hence,
-		 * it will only free old nodes till there is no free
-		 * from the LRU list.  Hence, this test does not apply
-		 * to BPF_F_NO_COMMON_LRU
-		 */
+		/* This test is only applicable to common LRU list */
 		return;
 
 	printf("%s (map_type:%d map_flags:0x%X): ", __func__, map_type,
@@ -290,10 +280,6 @@ static void test_lru_sanity2(int map_type, int map_flags, unsigned int tgt_free)
 	assert(batch_size * 2 == tgt_free);
 
 	map_size = tgt_free + batch_size;
-	if (map_flags & BPF_F_NO_COMMON_LRU)
-		lru_map_fd = create_map(map_type, map_flags,
-					map_size * nr_cpus);
-	else
 	lru_map_fd = create_map(map_type, map_flags, map_size);
 	assert(lru_map_fd != -1);