aboutsummaryrefslogtreecommitdiffstats
path: root/samples
diff options
context:
space:
mode:
authorMartin KaFai Lau <kafai@fb.com>2017-08-18 11:28:01 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-19 21:35:43 -0700
commitad17d0e6c708805bf9e6686eb747cc528b702e67 (patch)
treed6350b4b468bb9ca5ebb40f73758af26ec36082f /samples
parentbpf: Allow selecting numa node during map creation (diff)
downloadlinux-dev-ad17d0e6c708805bf9e6686eb747cc528b702e67.tar.xz
linux-dev-ad17d0e6c708805bf9e6686eb747cc528b702e67.zip
bpf: Allow numa selection in INNER_LRU_HASH_PREALLOC test of map_perf_test
This patch makes the needed changes to allow each process of the INNER_LRU_HASH_PREALLOC test to provide its numa node id when creating the lru map. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/bpf_load.c21
-rw-r--r--samples/bpf/bpf_load.h1
-rw-r--r--samples/bpf/map_perf_test_kern.c2
-rw-r--r--samples/bpf/map_perf_test_user.c12
4 files changed, 25 insertions, 11 deletions
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index a8552b8a2ab6..6aa50098dfb8 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -201,7 +201,7 @@ static int load_and_attach(const char *event, struct bpf_insn *prog, int size)
static int load_maps(struct bpf_map_data *maps, int nr_maps,
fixup_map_cb fixup_map)
{
- int i;
+ int i, numa_node;
for (i = 0; i < nr_maps; i++) {
if (fixup_map) {
@@ -213,21 +213,26 @@ static int load_maps(struct bpf_map_data *maps, int nr_maps,
}
}
+ numa_node = maps[i].def.map_flags & BPF_F_NUMA_NODE ?
+ maps[i].def.numa_node : -1;
+
if (maps[i].def.type == BPF_MAP_TYPE_ARRAY_OF_MAPS ||
maps[i].def.type == BPF_MAP_TYPE_HASH_OF_MAPS) {
int inner_map_fd = map_fd[maps[i].def.inner_map_idx];
- map_fd[i] = bpf_create_map_in_map(maps[i].def.type,
+ map_fd[i] = bpf_create_map_in_map_node(maps[i].def.type,
maps[i].def.key_size,
inner_map_fd,
maps[i].def.max_entries,
- maps[i].def.map_flags);
+ maps[i].def.map_flags,
+ numa_node);
} else {
- map_fd[i] = bpf_create_map(maps[i].def.type,
- maps[i].def.key_size,
- maps[i].def.value_size,
- maps[i].def.max_entries,
- maps[i].def.map_flags);
+ map_fd[i] = bpf_create_map_node(maps[i].def.type,
+ maps[i].def.key_size,
+ maps[i].def.value_size,
+ maps[i].def.max_entries,
+ maps[i].def.map_flags,
+ numa_node);
}
if (map_fd[i] < 0) {
printf("failed to create a map: %d %s\n",
diff --git a/samples/bpf/bpf_load.h b/samples/bpf/bpf_load.h
index ca0563d04744..453e3226b4ce 100644
--- a/samples/bpf/bpf_load.h
+++ b/samples/bpf/bpf_load.h
@@ -13,6 +13,7 @@ struct bpf_map_def {
unsigned int max_entries;
unsigned int map_flags;
unsigned int inner_map_idx;
+ unsigned int numa_node;
};
struct bpf_map_data {
diff --git a/samples/bpf/map_perf_test_kern.c b/samples/bpf/map_perf_test_kern.c
index 245165817fbe..ca3b22ed577a 100644
--- a/samples/bpf/map_perf_test_kern.c
+++ b/samples/bpf/map_perf_test_kern.c
@@ -40,6 +40,8 @@ struct bpf_map_def SEC("maps") inner_lru_hash_map = {
.key_size = sizeof(u32),
.value_size = sizeof(long),
.max_entries = MAX_ENTRIES,
+ .map_flags = BPF_F_NUMA_NODE,
+ .numa_node = 0,
};
struct bpf_map_def SEC("maps") array_of_lru_hashs = {
diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c
index 1a8894b5ac51..bccbf8478e43 100644
--- a/samples/bpf/map_perf_test_user.c
+++ b/samples/bpf/map_perf_test_user.c
@@ -97,14 +97,20 @@ static void do_test_lru(enum test_type test, int cpu)
if (test == INNER_LRU_HASH_PREALLOC) {
int outer_fd = map_fd[array_of_lru_hashs_idx];
+ unsigned int mycpu, mynode;
assert(cpu < MAX_NR_CPUS);
if (cpu) {
+ ret = syscall(__NR_getcpu, &mycpu, &mynode, NULL);
+ assert(!ret);
+
inner_lru_map_fds[cpu] =
- bpf_create_map(BPF_MAP_TYPE_LRU_HASH,
- sizeof(uint32_t), sizeof(long),
- inner_lru_hash_size, 0);
+ bpf_create_map_node(BPF_MAP_TYPE_LRU_HASH,
+ sizeof(uint32_t),
+ sizeof(long),
+ inner_lru_hash_size, 0,
+ mynode);
if (inner_lru_map_fds[cpu] == -1) {
printf("cannot create BPF_MAP_TYPE_LRU_HASH %s(%d)\n",
strerror(errno), errno);