diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/trigger_bench.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/trigger_bench.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/trigger_bench.c b/tools/testing/selftests/bpf/progs/trigger_bench.c new file mode 100644 index 000000000000..2898b3749d07 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/trigger_bench.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Facebook +#include <linux/bpf.h> +#include <asm/unistd.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include "bpf_misc.h" + +char _license[] SEC("license") = "GPL"; + +#define CPU_MASK 255 +#define MAX_CPUS (CPU_MASK + 1) /* should match MAX_BUCKETS in benchs/bench_trigger.c */ + +/* matches struct counter in bench.h */ +struct counter { + long value; +} __attribute__((aligned(128))); + +struct counter hits[MAX_CPUS]; + +static __always_inline void inc_counter(void) +{ + int cpu = bpf_get_smp_processor_id(); + + __sync_add_and_fetch(&hits[cpu & CPU_MASK].value, 1); +} + +SEC("?uprobe") +int bench_trigger_uprobe(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?uprobe.multi") +int bench_trigger_uprobe_multi(void *ctx) +{ + inc_counter(); + return 0; +} + +const volatile int batch_iters = 0; + +SEC("?raw_tp") +int trigger_kernel_count(void *ctx) +{ + int i; + + for (i = 0; i < batch_iters; i++) { + inc_counter(); + bpf_get_numa_node_id(); + } + + 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; +} + +extern int bpf_modify_return_test_tp(int nonce) __ksym __weak; + +SEC("?raw_tp") +int trigger_driver_kfunc(void *ctx) +{ + int i; + + for (i = 0; i < batch_iters; i++) + (void)bpf_modify_return_test_tp(0); /* attach point for benchmarking */ + + return 0; +} + +SEC("?kprobe/bpf_get_numa_node_id") +int bench_trigger_kprobe(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?kretprobe/bpf_get_numa_node_id") +int bench_trigger_kretprobe(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?kprobe.multi/bpf_get_numa_node_id") +int bench_trigger_kprobe_multi(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?kprobe.multi/bpf_get_numa_node_id") +int bench_kprobe_multi_empty(void *ctx) +{ + return 0; +} + +SEC("?kretprobe.multi/bpf_get_numa_node_id") +int bench_trigger_kretprobe_multi(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?kretprobe.multi/bpf_get_numa_node_id") +int bench_kretprobe_multi_empty(void *ctx) +{ + return 0; +} + +SEC("?fentry/bpf_get_numa_node_id") +int bench_trigger_fentry(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?fexit/bpf_get_numa_node_id") +int bench_trigger_fexit(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?fmod_ret/bpf_modify_return_test_tp") +int bench_trigger_fmodret(void *ctx) +{ + inc_counter(); + return -22; +} + +SEC("?tp/bpf_test_run/bpf_trigger_tp") +int bench_trigger_tp(void *ctx) +{ + inc_counter(); + return 0; +} + +SEC("?raw_tp/bpf_trigger_tp") +int bench_trigger_rawtp(void *ctx) +{ + inc_counter(); + return 0; +} |
