diff options
| -rw-r--r-- | tools/testing/selftests/bpf/bench.c | 21 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/benchs/bench_trigger.c | 133 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/benchs/run_bench_trigger.sh | 24 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/trigger_bench.c | 67 |
4 files changed, 238 insertions, 7 deletions
diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c index 7ca1e1eb5c30..484bcbeaa819 100644 --- a/tools/testing/selftests/bpf/bench.c +++ b/tools/testing/selftests/bpf/bench.c @@ -280,6 +280,7 @@ extern struct argp bench_strncmp_argp; extern struct argp bench_hashmap_lookup_argp; extern struct argp bench_local_storage_create_argp; extern struct argp bench_htab_mem_argp; +extern struct argp bench_trigger_batch_argp; static const struct argp_child bench_parsers[] = { { &bench_ringbufs_argp, 0, "Ring buffers benchmark", 0 }, @@ -292,6 +293,7 @@ static const struct argp_child bench_parsers[] = { { &bench_hashmap_lookup_argp, 0, "Hashmap lookup benchmark", 0 }, { &bench_local_storage_create_argp, 0, "local-storage-create benchmark", 0 }, { &bench_htab_mem_argp, 0, "hash map memory benchmark", 0 }, + { &bench_trigger_batch_argp, 0, "BPF triggering benchmark", 0 }, {}, }; @@ -508,6 +510,15 @@ extern const struct bench bench_trig_fexit; extern const struct bench bench_trig_fentry_sleep; extern const struct bench bench_trig_fmodret; +/* batched, staying mostly in-kernel benchmarks */ +extern const struct bench bench_trig_kernel_count; +extern const struct bench bench_trig_kprobe_batch; +extern const struct bench bench_trig_kretprobe_batch; +extern const struct bench bench_trig_kprobe_multi_batch; +extern const struct bench bench_trig_kretprobe_multi_batch; +extern const struct bench bench_trig_fentry_batch; +extern const struct bench bench_trig_fexit_batch; + /* uprobe/uretprobe benchmarks */ extern const struct bench bench_trig_uprobe_nop; extern const struct bench bench_trig_uretprobe_nop; @@ -548,7 +559,7 @@ static const struct bench *benchs[] = { &bench_rename_fexit, /* pure counting benchmarks for establishing theoretical limits */ &bench_trig_usermode_count, - &bench_trig_base, + &bench_trig_kernel_count, /* syscall-driven triggering benchmarks */ &bench_trig_tp, &bench_trig_rawtp, @@ -560,6 +571,13 @@ static const struct bench *benchs[] = { &bench_trig_fexit, &bench_trig_fentry_sleep, &bench_trig_fmodret, + /* batched, staying mostly in-kernel triggers */ + &bench_trig_kprobe_batch, + &bench_trig_kretprobe_batch, + &bench_trig_kprobe_multi_batch, + &bench_trig_kretprobe_multi_batch, + &bench_trig_fentry_batch, + &bench_trig_fexit_batch, /* uprobes */ &bench_trig_uprobe_nop, &bench_trig_uretprobe_nop, @@ -567,6 +585,7 @@ static const struct bench *benchs[] = { &bench_trig_uretprobe_push, &bench_trig_uprobe_ret, &bench_trig_uretprobe_ret, + /* ringbuf/perfbuf benchmarks */ &bench_rb_libbpf, &bench_rb_custom, &bench_pb_libbpf, diff --git a/tools/testing/selftests/bpf/benchs/bench_trigger.c b/tools/testing/selftests/bpf/benchs/bench_trigger.c index 97aba7e6458d..20277dabdaf9 100644 --- a/tools/testing/selftests/bpf/benchs/bench_trigger.c +++ b/tools/testing/selftests/bpf/benchs/bench_trigger.c @@ -1,11 +1,57 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ #define _GNU_SOURCE +#include <argp.h> #include <unistd.h> +#include <stdint.h> #include "bench.h" #include "trigger_bench.skel.h" #include "trace_helpers.h" +#define MAX_TRIG_BATCH_ITERS 1000 + +static struct { + __u32 batch_iters; +} args = { + .batch_iters = 100, +}; + +enum { + ARG_TRIG_BATCH_ITERS = 7000, +}; + +static const struct argp_option opts[] = { + { "trig-batch-iters", ARG_TRIG_BATCH_ITERS, "BATCH_ITER_CNT", 0, + "Number of in-kernel iterations per one driver test run"}, + {}, +}; + +static error_t parse_arg(int key, char *arg, struct argp_state *state) +{ + long ret; + + switch (key) { + case ARG_TRIG_BATCH_ITERS: + ret = strtol(arg, NULL, 10); + if (ret < 1 || ret > MAX_TRIG_BATCH_ITERS) { + fprintf(stderr, "invalid --trig-batch-iters value (should be between %d and %d)\n", + 1, MAX_TRIG_BATCH_ITERS); + argp_usage(state); + } + args.batch_iters = ret; + break; + default: + return ARGP_ERR_UNKNOWN; + } + + return 0; +} + +const struct argp bench_trigger_batch_argp = { + .options = opts, + .parser = parse_arg, +}; + /* adjust slot shift in inc_hits() if changing */ #define MAX_BUCKETS 256 @@ -15,6 +61,7 @@ static struct trigger_ctx { struct trigger_bench *skel; bool usermode_counters; + int driver_prog_fd; } ctx; static struct counter base_hits[MAX_BUCKETS]; @@ -73,6 +120,16 @@ static void *trigger_producer(void *input) return NULL; } +static void *trigger_producer_batch(void *input) +{ + int fd = ctx.driver_prog_fd ?: bpf_program__fd(ctx.skel->progs.trigger_driver); + + while (true) + bpf_prog_test_run_opts(fd, NULL); + + return NULL; +} + static void trigger_measure(struct bench_res *res) { if (ctx.usermode_counters) @@ -83,13 +140,23 @@ static void trigger_measure(struct bench_res *res) static void setup_ctx(void) { + int err; + setup_libbpf(); - ctx.skel = trigger_bench__open_and_load(); + ctx.skel = trigger_bench__open(); if (!ctx.skel) { fprintf(stderr, "failed to open skeleton\n"); exit(1); } + + ctx.skel->rodata->batch_iters = args.batch_iters; + + err = trigger_bench__load(ctx.skel); + if (err) { + fprintf(stderr, "failed to open skeleton\n"); + exit(1); + } } static void attach_bpf(struct bpf_program *prog) @@ -163,6 +230,50 @@ static void trigger_fmodret_setup(void) attach_bpf(ctx.skel->progs.bench_trigger_fmodret); } +/* Batched, staying mostly in-kernel triggering setups */ +static void trigger_kernel_count_setup(void) +{ + setup_ctx(); + /* override driver program */ + ctx.driver_prog_fd = bpf_program__fd(ctx.skel->progs.trigger_count); +} + +static void trigger_kprobe_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_kprobe_batch); +} + +static void trigger_kretprobe_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_kretprobe_batch); +} + +static void trigger_kprobe_multi_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_kprobe_multi_batch); +} + +static void trigger_kretprobe_multi_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_kretprobe_multi_batch); +} + +static void trigger_fentry_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_fentry_batch); +} + +static void trigger_fexit_batch_setup(void) +{ + setup_ctx(); + attach_bpf(ctx.skel->progs.bench_trigger_fexit_batch); +} + /* make sure call is not inlined and not avoided by compiler, so __weak and * inline asm volatile in the body of the function * @@ -396,6 +507,26 @@ const struct bench bench_trig_fmodret = { .report_final = hits_drops_report_final, }; +/* batched (staying mostly in kernel) kprobe/fentry benchmarks */ +#define BENCH_TRIG_BATCH(KIND, NAME) \ +const struct bench bench_trig_##KIND = { \ + .name = "trig-" NAME, \ + .setup = trigger_##KIND##_setup, \ + .producer_thread = trigger_producer_batch, \ + .measure = trigger_measure, \ + .report_progress = hits_drops_report_progress, \ + .report_final = hits_drops_report_final, \ + .argp = &bench_trigger_batch_argp, \ +} + +BENCH_TRIG_BATCH(kernel_count, "kernel-count"); +BENCH_TRIG_BATCH(kprobe_batch, "kprobe-batch"); +BENCH_TRIG_BATCH(kretprobe_batch, "kretprobe-batch"); +BENCH_TRIG_BATCH(kprobe_multi_batch, "kprobe-multi-batch"); +BENCH_TRIG_BATCH(kretprobe_multi_batch, "kretprobe-multi-batch"); +BENCH_TRIG_BATCH(fentry_batch, "fentry-batch"); +BENCH_TRIG_BATCH(fexit_batch, "fexit-batch"); + /* uprobe benchmarks */ #define BENCH_TRIG_USERMODE(KIND, PRODUCER, NAME) \ const struct bench bench_trig_##KIND = { \ diff --git a/tools/testing/selftests/bpf/benchs/run_bench_trigger.sh b/tools/testing/selftests/bpf/benchs/run_bench_trigger.sh index 78e83f243294..b58ec33ea18c 100755 --- a/tools/testing/selftests/bpf/benchs/run_bench_trigger.sh +++ b/tools/testing/selftests/bpf/benchs/run_bench_trigger.sh @@ -2,8 +2,24 @@ set -eufo pipefail -for i in base tp rawtp kprobe fentry fmodret -do - summary=$(sudo ./bench -w2 -d5 -a trig-$i | tail -n1 | cut -d'(' -f1 | cut -d' ' -f3-) - printf "%-10s: %s\n" $i "$summary" +def_tests=( \ + usermode-count kernel-count syscall-count \ + fentry-batch fexit-batch \ + kprobe-batch kprobe-multi-batch \ + kretprobe-batch kretprobe-multi-batch \ + fentry fexit fmodret \ + rawtp tp \ + kprobe kprobe-multi kretprobe kretprobe-multi \ +) + +tests=("$@") +if [ ${#tests[@]} -eq 0 ]; then + tests=("${def_tests[@]}") +fi + +p=${PROD_CNT:-1} + +for t in "${tests[@]}"; do + summary=$(sudo ./bench -w2 -d5 -a -p$p trig-$t | tail -n1 | cut -d'(' -f1 | cut -d' ' -f3-) + printf "%-21s: %s\n" $t "$summary" done diff --git a/tools/testing/selftests/bpf/progs/trigger_bench.c b/tools/testing/selftests/bpf/progs/trigger_bench.c index 42ec202015ed..f0b76afa5017 100644 --- a/tools/testing/selftests/bpf/progs/trigger_bench.c +++ b/tools/testing/selftests/bpf/progs/trigger_bench.c @@ -1,6 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2020 Facebook - #include <linux/bpf.h> #include <asm/unistd.h> #include <bpf/bpf_helpers.h> @@ -103,3 +102,69 @@ int bench_trigger_uprobe(void *ctx) inc_counter(); return 0; } + +const volatile int batch_iters = 0; + +SEC("raw_tp") +int trigger_count(void *ctx) +{ + int i; + + for (i = 0; i < batch_iters; i++) + inc_counter(); + + return 0; +} + +SEC("raw_tp") +int trigger_driver(void *ctx) +{ + int i; + + for (i = 0; i < batch_iters; i++) + (void)bpf_get_numa_node_id(); /* attach point for benchmarking */ + + return 0; +} + +SEC("kprobe/bpf_get_numa_node_id") +int bench_trigger_kprobe_batch(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("kretprobe/bpf_get_numa_node_id") +int bench_trigger_kretprobe_batch(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("kprobe.multi/bpf_get_numa_node_id") +int bench_trigger_kprobe_multi_batch(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("kretprobe.multi/bpf_get_numa_node_id") +int bench_trigger_kretprobe_multi_batch(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("fentry/bpf_get_numa_node_id") +int bench_trigger_fentry_batch(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("fexit/bpf_get_numa_node_id") +int bench_trigger_fexit_batch(void *ctx) +{ + inc_counter(); + return 0; +} |