This patchset introduces batched operations for the per-cpu variant of the array map.
It also removes the percpu macros from 'bpf_util.h'. This change was suggested by Andrii in a earlier iteration of this patchset.
The tests were updated to reflect all the new changes.
v3 -> v4: - Prefer 'calloc()' over 'malloc()' on batch ops tests - Add missing static keyword in a couple of test functions - 'offset' to 'cpu_offset' as suggested by Martin
v2 -> v3: - Remove percpu macros as suggested by Andrii - Update tests that used the per cpu macros
v1 -> v2: - Amended a more descriptive commit message
Pedro Tammela (3): bpf: add batched ops support for percpu array bpf: selftests: remove percpu macros from bpf_util.h bpf: selftests: update array map tests for per-cpu batched ops
kernel/bpf/arraymap.c | 2 + tools/testing/selftests/bpf/bpf_util.h | 7 -- .../bpf/map_tests/array_map_batch_ops.c | 104 +++++++++++++----- .../bpf/map_tests/htab_map_batch_ops.c | 87 +++++++-------- .../selftests/bpf/prog_tests/map_init.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 84 ++++++++------ 6 files changed, 173 insertions(+), 120 deletions(-)
Uses the already in-place infrastructure provided by the 'generic_map_*_batch' functions.
No tweak was needed as it transparently handles the percpu variant.
As arrays don't have delete operations, let it return a error to user space (default behaviour).
Suggested-by: Jamal Hadi Salim jhs@mojatatu.com Signed-off-by: Pedro Tammela pctammela@mojatatu.com --- kernel/bpf/arraymap.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index 463d25e1e67e..3c4105603f9d 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -698,6 +698,8 @@ const struct bpf_map_ops percpu_array_map_ops = { .map_delete_elem = array_map_delete_elem, .map_seq_show_elem = percpu_array_map_seq_show_elem, .map_check_btf = array_map_check_btf, + .map_lookup_batch = generic_map_lookup_batch, + .map_update_batch = generic_map_update_batch, .map_set_for_each_callback_args = map_set_for_each_callback_args, .map_for_each_callback = bpf_for_each_array_elem, .map_btf_name = "bpf_array",
Andrii suggested to remove this abstraction layer and have the percpu handling more explicit[1].
This patch also updates the tests that relied on the macros.
[1] https://lore.kernel.org/bpf/CAEf4BzYmj_ZPDq8Zi4dbntboJKRPU2TVopysBNrdd9foHTf...
Suggested-by: Andrii Nakryiko andrii@kernel.org Signed-off-by: Pedro Tammela pctammela@mojatatu.com --- tools/testing/selftests/bpf/bpf_util.h | 7 -- .../bpf/map_tests/htab_map_batch_ops.c | 87 +++++++++---------- .../selftests/bpf/prog_tests/map_init.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 84 +++++++++++------- 4 files changed, 96 insertions(+), 91 deletions(-)
diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h index a3352a64c067..105db3120ab4 100644 --- a/tools/testing/selftests/bpf/bpf_util.h +++ b/tools/testing/selftests/bpf/bpf_util.h @@ -20,13 +20,6 @@ static inline unsigned int bpf_num_possible_cpus(void) return possible_cpus; }
-#define __bpf_percpu_val_align __attribute__((__aligned__(8))) - -#define BPF_DECLARE_PERCPU(type, name) \ - struct { type v; /* padding */ } __bpf_percpu_val_align \ - name[bpf_num_possible_cpus()] -#define bpf_percpu(name, cpu) name[(cpu)].v - #ifndef ARRAY_SIZE # define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) #endif diff --git a/tools/testing/selftests/bpf/map_tests/htab_map_batch_ops.c b/tools/testing/selftests/bpf/map_tests/htab_map_batch_ops.c index 976bf415fbdd..8562600ad1df 100644 --- a/tools/testing/selftests/bpf/map_tests/htab_map_batch_ops.c +++ b/tools/testing/selftests/bpf/map_tests/htab_map_batch_ops.c @@ -7,65 +7,60 @@ #include <bpf/bpf.h> #include <bpf/libbpf.h>
-#include <bpf_util.h> #include <test_maps.h>
+static int nr_cpus; + static void map_batch_update(int map_fd, __u32 max_entries, int *keys, - void *values, bool is_pcpu) + __s64 *values, bool is_pcpu) { - typedef BPF_DECLARE_PERCPU(int, value); - value *v = NULL; int i, j, err; + int cpu_offset = 0; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, .flags = 0, );
- if (is_pcpu) - v = (value *)values; - for (i = 0; i < max_entries; i++) { keys[i] = i + 1; - if (is_pcpu) - for (j = 0; j < bpf_num_possible_cpus(); j++) - bpf_percpu(v[i], j) = i + 2 + j; - else - ((int *)values)[i] = i + 2; + if (is_pcpu) { + cpu_offset = i * nr_cpus; + for (j = 0; j < nr_cpus; j++) + (values + cpu_offset)[j] = i + 2 + j; + + } else { + values[i] = i + 2; + } }
err = bpf_map_update_batch(map_fd, keys, values, &max_entries, &opts); CHECK(err, "bpf_map_update_batch()", "error:%s\n", strerror(errno)); }
-static void map_batch_verify(int *visited, __u32 max_entries, - int *keys, void *values, bool is_pcpu) +static void map_batch_verify(int *visited, __u32 max_entries, int *keys, + __s64 *values, bool is_pcpu) { - typedef BPF_DECLARE_PERCPU(int, value); - value *v = NULL; int i, j; - - if (is_pcpu) - v = (value *)values; + int cpu_offset = 0;
memset(visited, 0, max_entries * sizeof(*visited)); for (i = 0; i < max_entries; i++) { - if (is_pcpu) { - for (j = 0; j < bpf_num_possible_cpus(); j++) { - CHECK(keys[i] + 1 + j != bpf_percpu(v[i], j), + cpu_offset = i * nr_cpus; + for (j = 0; j < nr_cpus; j++) { + __s64 value = (values + cpu_offset)[j]; + CHECK(keys[i] + 1 + j != value, "key/value checking", - "error: i %d j %d key %d value %d\n", - i, j, keys[i], bpf_percpu(v[i], j)); + "error: i %d j %d key %d value %lld\n", i, + j, keys[i], value); } + } else { - CHECK(keys[i] + 1 != ((int *)values)[i], - "key/value checking", - "error: i %d key %d value %d\n", i, keys[i], - ((int *)values)[i]); + CHECK(keys[i] + 1 != values[i], "key/value checking", + "error: i %d key %d value %lld\n", i, keys[i], + values[i]); } - visited[i] = 1; - } for (i = 0; i < max_entries; i++) { CHECK(visited[i] != 1, "visited checking", @@ -73,13 +68,11 @@ static void map_batch_verify(int *visited, __u32 max_entries, } }
-void __test_map_lookup_and_delete_batch(bool is_pcpu) +static void __test_map_lookup_and_delete_batch(bool is_pcpu) { __u32 batch, count, total, total_success; - typedef BPF_DECLARE_PERCPU(int, value); int map_fd, *keys, *visited, key; const __u32 max_entries = 10; - value pcpu_values[max_entries]; int err, step, value_size; bool nospace_err; void *values; @@ -88,7 +81,7 @@ void __test_map_lookup_and_delete_batch(bool is_pcpu) .map_type = is_pcpu ? BPF_MAP_TYPE_PERCPU_HASH : BPF_MAP_TYPE_HASH, .key_size = sizeof(int), - .value_size = sizeof(int), + .value_size = sizeof(__s64), }; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, @@ -100,13 +93,13 @@ void __test_map_lookup_and_delete_batch(bool is_pcpu) CHECK(map_fd == -1, "bpf_create_map_xattr()", "error:%s\n", strerror(errno));
- value_size = is_pcpu ? sizeof(value) : sizeof(int); - keys = malloc(max_entries * sizeof(int)); + value_size = sizeof(__s64); if (is_pcpu) - values = pcpu_values; - else - values = malloc(max_entries * sizeof(int)); - visited = malloc(max_entries * sizeof(int)); + value_size *= nr_cpus; + + keys = calloc(max_entries, sizeof(int)); + values = calloc(max_entries, value_size); + visited = calloc(max_entries, sizeof(int)); CHECK(!keys || !values || !visited, "malloc()", "error:%s\n", strerror(errno));
@@ -203,7 +196,7 @@ void __test_map_lookup_and_delete_batch(bool is_pcpu) CHECK(total != max_entries, "delete with steps", "total = %u, max_entries = %u\n", total, max_entries);
- /* check map is empty, errono == ENOENT */ + /* check map is empty, errno == ENOENT */ err = bpf_map_get_next_key(map_fd, NULL, &key); CHECK(!err || errno != ENOENT, "bpf_map_get_next_key()", "error: %s\n", strerror(errno)); @@ -260,17 +253,16 @@ void __test_map_lookup_and_delete_batch(bool is_pcpu) "unexpected failure\n"); free(keys); free(visited); - if (!is_pcpu) - free(values); + free(values); }
-void htab_map_batch_ops(void) +static void htab_map_batch_ops(void) { __test_map_lookup_and_delete_batch(false); printf("test_%s:PASS\n", __func__); }
-void htab_percpu_map_batch_ops(void) +static void htab_percpu_map_batch_ops(void) { __test_map_lookup_and_delete_batch(true); printf("test_%s:PASS\n", __func__); @@ -278,6 +270,11 @@ void htab_percpu_map_batch_ops(void)
void test_htab_map_batch_ops(void) { + nr_cpus = libbpf_num_possible_cpus(); + + CHECK(nr_cpus < 0, "nr_cpus checking", + "error: get possible cpus failed"); + htab_map_batch_ops(); htab_percpu_map_batch_ops(); } diff --git a/tools/testing/selftests/bpf/prog_tests/map_init.c b/tools/testing/selftests/bpf/prog_tests/map_init.c index 14a31109dd0e..49386d0aa684 100644 --- a/tools/testing/selftests/bpf/prog_tests/map_init.c +++ b/tools/testing/selftests/bpf/prog_tests/map_init.c @@ -12,10 +12,7 @@ static int duration;
typedef unsigned long long map_key_t; typedef unsigned long long map_value_t; -typedef struct { - map_value_t v; /* padding */ -} __bpf_percpu_val_align pcpu_map_value_t; - +typedef __s64 pcpu_map_value_t;
static int map_populate(int map_fd, int num) { @@ -24,7 +21,7 @@ static int map_populate(int map_fd, int num) map_key_t key;
for (i = 0; i < nr_cpus; i++) - bpf_percpu(value, i) = FILL_VALUE; + value[i] = FILL_VALUE;
for (key = 1; key <= num; key++) { err = bpf_map_update_elem(map_fd, &key, value, BPF_NOEXIST); @@ -103,7 +100,7 @@ static int check_values_one_cpu(pcpu_map_value_t *value, map_value_t expected) map_value_t val;
for (i = 0; i < nr_cpus; i++) { - val = bpf_percpu(value, i); + val = value[i]; if (val) { if (CHECK(val != expected, "map value", "unexpected for cpu %d: 0x%llx\n", i, val)) diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c index 51adc42b2b40..b8ce837a7ada 100644 --- a/tools/testing/selftests/bpf/test_maps.c +++ b/tools/testing/selftests/bpf/test_maps.c @@ -146,63 +146,69 @@ static void test_hashmap_sizes(unsigned int task, void *data)
static void test_hashmap_percpu(unsigned int task, void *data) { - unsigned int nr_cpus = bpf_num_possible_cpus(); - BPF_DECLARE_PERCPU(long, value); + int nr_cpus = libbpf_num_possible_cpus(); + __s64 *values; long long key, next_key, first_key; int expected_key_mask = 0; int fd, i;
+ if (nr_cpus < 0) { + printf("Failed get possible cpus\n"); + exit(1); + } + + values = alloca(nr_cpus * sizeof(__s64)); + fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_HASH, sizeof(key), - sizeof(bpf_percpu(value, 0)), 2, map_flags); + sizeof(*values), 2, map_flags); if (fd < 0) { printf("Failed to create hashmap '%s'!\n", strerror(errno)); exit(1); }
for (i = 0; i < nr_cpus; i++) - bpf_percpu(value, i) = i + 100; + values[i] = i + 100;
key = 1; /* Insert key=1 element. */ assert(!(expected_key_mask & key)); - assert(bpf_map_update_elem(fd, &key, value, BPF_ANY) == 0); + assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0); expected_key_mask |= key;
/* BPF_NOEXIST means add new element if it doesn't exist. */ - assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == -1 && + assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) == -1 && /* key=1 already exists. */ errno == EEXIST);
/* -1 is an invalid flag. */ - assert(bpf_map_update_elem(fd, &key, value, -1) == -1 && + assert(bpf_map_update_elem(fd, &key, values, -1) == -1 && errno == EINVAL);
/* Check that key=1 can be found. Value could be 0 if the lookup * was run from a different CPU. */ - bpf_percpu(value, 0) = 1; - assert(bpf_map_lookup_elem(fd, &key, value) == 0 && - bpf_percpu(value, 0) == 100); + values[0] = 1; + assert(bpf_map_lookup_elem(fd, &key, values) == 0 && values[0] == 100);
key = 2; /* Check that key=2 is not found. */ - assert(bpf_map_lookup_elem(fd, &key, value) == -1 && errno == ENOENT); + assert(bpf_map_lookup_elem(fd, &key, values) == -1 && errno == ENOENT);
/* BPF_EXIST means update existing element. */ - assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == -1 && + assert(bpf_map_update_elem(fd, &key, values, BPF_EXIST) == -1 && /* key=2 is not there. */ errno == ENOENT);
/* Insert key=2 element. */ assert(!(expected_key_mask & key)); - assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == 0); + assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) == 0); expected_key_mask |= key;
/* key=1 and key=2 were inserted, check that key=0 cannot be * inserted due to max_entries limit. */ key = 0; - assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == -1 && + assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) == -1 && errno == E2BIG);
/* Check that key = 0 doesn't exist. */ @@ -219,10 +225,10 @@ static void test_hashmap_percpu(unsigned int task, void *data) assert((expected_key_mask & next_key) == next_key); expected_key_mask &= ~next_key;
- assert(bpf_map_lookup_elem(fd, &next_key, value) == 0); + assert(bpf_map_lookup_elem(fd, &next_key, values) == 0);
for (i = 0; i < nr_cpus; i++) - assert(bpf_percpu(value, i) == i + 100); + assert(values[i] == i + 100);
key = next_key; } @@ -230,7 +236,7 @@ static void test_hashmap_percpu(unsigned int task, void *data)
/* Update with BPF_EXIST. */ key = 1; - assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == 0); + assert(bpf_map_update_elem(fd, &key, values, BPF_EXIST) == 0);
/* Delete both elements. */ key = 1; @@ -399,37 +405,42 @@ static void test_arraymap(unsigned int task, void *data)
static void test_arraymap_percpu(unsigned int task, void *data) { - unsigned int nr_cpus = bpf_num_possible_cpus(); - BPF_DECLARE_PERCPU(long, values); + int nr_cpus = libbpf_num_possible_cpus(); + __s64 *values; int key, next_key, fd, i;
+ if (nr_cpus < 0) { + printf("Failed get possible cpus\n"); + exit(1); + } + + values = alloca(nr_cpus * sizeof(__s64)); + fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_ARRAY, sizeof(key), - sizeof(bpf_percpu(values, 0)), 2, 0); + sizeof(*values), 2, 0); if (fd < 0) { printf("Failed to create arraymap '%s'!\n", strerror(errno)); exit(1); }
for (i = 0; i < nr_cpus; i++) - bpf_percpu(values, i) = i + 100; + values[i] = i + 100;
key = 1; /* Insert key=1 element. */ assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
- bpf_percpu(values, 0) = 0; + values[0] = 0; assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) == -1 && errno == EEXIST);
/* Check that key=1 can be found. */ - assert(bpf_map_lookup_elem(fd, &key, values) == 0 && - bpf_percpu(values, 0) == 100); + assert(bpf_map_lookup_elem(fd, &key, values) == 0 && values[0] == 100);
key = 0; /* Check that key=0 is also found and zero initialized. */ - assert(bpf_map_lookup_elem(fd, &key, values) == 0 && - bpf_percpu(values, 0) == 0 && - bpf_percpu(values, nr_cpus - 1) == 0); + assert(bpf_map_lookup_elem(fd, &key, values) == 0 && values[0] == 0 && + values[nr_cpus - 1] == 0);
/* Check that key=2 cannot be inserted due to max_entries limit. */ key = 2; @@ -458,16 +469,23 @@ static void test_arraymap_percpu(unsigned int task, void *data)
static void test_arraymap_percpu_many_keys(void) { - unsigned int nr_cpus = bpf_num_possible_cpus(); - BPF_DECLARE_PERCPU(long, values); + unsigned int nr_cpus = libbpf_num_possible_cpus(); + __s64 *values; /* nr_keys is not too large otherwise the test stresses percpu * allocator more than anything else */ unsigned int nr_keys = 2000; int key, fd, i;
+ if (nr_cpus < 0) { + printf("Failed get possible cpus\n"); + exit(1); + } + + values = alloca(nr_cpus * sizeof(__s64)); + fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_ARRAY, sizeof(key), - sizeof(bpf_percpu(values, 0)), nr_keys, 0); + sizeof(*values), nr_keys, 0); if (fd < 0) { printf("Failed to create per-cpu arraymap '%s'!\n", strerror(errno)); @@ -475,19 +493,19 @@ static void test_arraymap_percpu_many_keys(void) }
for (i = 0; i < nr_cpus; i++) - bpf_percpu(values, i) = i + 10; + values[i] = i + 10;
for (key = 0; key < nr_keys; key++) assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
for (key = 0; key < nr_keys; key++) { for (i = 0; i < nr_cpus; i++) - bpf_percpu(values, i) = 0; + values[i] = 0;
assert(bpf_map_lookup_elem(fd, &key, values) == 0);
for (i = 0; i < nr_cpus; i++) - assert(bpf_percpu(values, i) == i + 10); + assert(values[i] == i + 10); }
close(fd);
Follows the same logic as the hashtable tests.
Signed-off-by: Pedro Tammela pctammela@mojatatu.com --- .../bpf/map_tests/array_map_batch_ops.c | 104 +++++++++++++----- 1 file changed, 75 insertions(+), 29 deletions(-)
diff --git a/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c b/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c index e42ea1195d18..f4d870da7684 100644 --- a/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c +++ b/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c @@ -9,10 +9,13 @@
#include <test_maps.h>
+static int nr_cpus; + static void map_batch_update(int map_fd, __u32 max_entries, int *keys, - int *values) + __s64 *values, bool is_pcpu) { - int i, err; + int i, j, err; + int cpu_offset = 0; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, .flags = 0, @@ -20,22 +23,41 @@ static void map_batch_update(int map_fd, __u32 max_entries, int *keys,
for (i = 0; i < max_entries; i++) { keys[i] = i; - values[i] = i + 1; + if (is_pcpu) { + cpu_offset = i * nr_cpus; + for (j = 0; j < nr_cpus; j++) + (values + cpu_offset)[j] = i + 1 + j; + } else { + values[i] = i + 1; + } }
err = bpf_map_update_batch(map_fd, keys, values, &max_entries, &opts); CHECK(err, "bpf_map_update_batch()", "error:%s\n", strerror(errno)); }
-static void map_batch_verify(int *visited, __u32 max_entries, - int *keys, int *values) +static void map_batch_verify(int *visited, __u32 max_entries, int *keys, + __s64 *values, bool is_pcpu) { - int i; + int i, j; + int cpu_offset = 0;
memset(visited, 0, max_entries * sizeof(*visited)); for (i = 0; i < max_entries; i++) { - CHECK(keys[i] + 1 != values[i], "key/value checking", - "error: i %d key %d value %d\n", i, keys[i], values[i]); + if (is_pcpu) { + cpu_offset = i * nr_cpus; + for (j = 0; j < nr_cpus; j++) { + __s64 value = (values + cpu_offset)[j]; + CHECK(keys[i] + j + 1 != value, + "key/value checking", + "error: i %d j %d key %d value %lld\n", i, + j, keys[i], value); + } + } else { + CHECK(keys[i] + 1 != values[i], "key/value checking", + "error: i %d key %d value %lld\n", i, keys[i], + values[i]); + } visited[i] = 1; } for (i = 0; i < max_entries; i++) { @@ -44,19 +66,21 @@ static void map_batch_verify(int *visited, __u32 max_entries, } }
-void test_array_map_batch_ops(void) +static void __test_map_lookup_and_update_batch(bool is_pcpu) { struct bpf_create_map_attr xattr = { .name = "array_map", - .map_type = BPF_MAP_TYPE_ARRAY, + .map_type = is_pcpu ? BPF_MAP_TYPE_PERCPU_ARRAY : + BPF_MAP_TYPE_ARRAY, .key_size = sizeof(int), - .value_size = sizeof(int), + .value_size = sizeof(__s64), }; - int map_fd, *keys, *values, *visited; + int map_fd, *keys, *visited; __u32 count, total, total_success; const __u32 max_entries = 10; __u64 batch = 0; - int err, step; + int err, step, value_size; + void *values; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, .flags = 0, @@ -67,22 +91,23 @@ void test_array_map_batch_ops(void) CHECK(map_fd == -1, "bpf_create_map_xattr()", "error:%s\n", strerror(errno));
- keys = malloc(max_entries * sizeof(int)); - values = malloc(max_entries * sizeof(int)); - visited = malloc(max_entries * sizeof(int)); + value_size = sizeof(__s64); + if (is_pcpu) + value_size *= nr_cpus; + + keys = calloc(max_entries, sizeof(*keys)); + values = calloc(max_entries, value_size); + visited = calloc(max_entries, sizeof(*visited)); CHECK(!keys || !values || !visited, "malloc()", "error:%s\n", strerror(errno));
- /* populate elements to the map */ - map_batch_update(map_fd, max_entries, keys, values); - /* test 1: lookup in a loop with various steps. */ total_success = 0; for (step = 1; step < max_entries; step++) { - map_batch_update(map_fd, max_entries, keys, values); - map_batch_verify(visited, max_entries, keys, values); + map_batch_update(map_fd, max_entries, keys, values, is_pcpu); + map_batch_verify(visited, max_entries, keys, values, is_pcpu); memset(keys, 0, max_entries * sizeof(*keys)); - memset(values, 0, max_entries * sizeof(*values)); + memset(values, 0, max_entries * value_size); batch = 0; total = 0; /* iteratively lookup/delete elements with 'step' @@ -91,10 +116,10 @@ void test_array_map_batch_ops(void) count = step; while (true) { err = bpf_map_lookup_batch(map_fd, - total ? &batch : NULL, &batch, - keys + total, - values + total, - &count, &opts); + total ? &batch : NULL, + &batch, keys + total, + values + total * value_size, + &count, &opts);
CHECK((err && errno != ENOENT), "lookup with steps", "error: %s\n", strerror(errno)); @@ -108,7 +133,7 @@ void test_array_map_batch_ops(void) CHECK(total != max_entries, "lookup with steps", "total = %u, max_entries = %u\n", total, max_entries);
- map_batch_verify(visited, max_entries, keys, values); + map_batch_verify(visited, max_entries, keys, values, is_pcpu);
total_success++; } @@ -116,9 +141,30 @@ void test_array_map_batch_ops(void) CHECK(total_success == 0, "check total_success", "unexpected failure\n");
- printf("%s:PASS\n", __func__); - free(keys); free(values); free(visited); } + +static void array_map_batch_ops(void) +{ + __test_map_lookup_and_update_batch(false); + printf("test_%s:PASS\n", __func__); +} + +static void array_percpu_map_batch_ops(void) +{ + __test_map_lookup_and_update_batch(true); + printf("test_%s:PASS\n", __func__); +} + +void test_array_map_batch_ops(void) +{ + nr_cpus = libbpf_num_possible_cpus(); + + CHECK(nr_cpus < 0, "nr_cpus checking", + "error: get possible cpus failed"); + + array_map_batch_ops(); + array_percpu_map_batch_ops(); +}
On Thu, Apr 15, 2021 at 02:46:16PM -0300, Pedro Tammela wrote:
This patchset introduces batched operations for the per-cpu variant of the array map.
It also removes the percpu macros from 'bpf_util.h'. This change was suggested by Andrii in a earlier iteration of this patchset.
The tests were updated to reflect all the new changes.
Acked-by: Martin KaFai Lau kafai@fb.com
Sorry I missed this. I don't recall why I didn't add the array percpu variant, but LGTM.
Acked-by: Brian Vazquez brianvv@google.com
On Fri, Apr 16, 2021 at 3:09 PM Martin KaFai Lau kafai@fb.com wrote:
On Thu, Apr 15, 2021 at 02:46:16PM -0300, Pedro Tammela wrote:
This patchset introduces batched operations for the per-cpu variant of the array map.
It also removes the percpu macros from 'bpf_util.h'. This change was suggested by Andrii in a earlier iteration of this patchset.
The tests were updated to reflect all the new changes.
Acked-by: Martin KaFai Lau kafai@fb.com
linux-kselftest-mirror@lists.linaro.org
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Brian Vazquez -
Martin KaFai Lau -
Pedro Tammela