bd368cb554
Change map definitions in BPF selftests to use BTF-defined key/value types. This unifies the map definitions and ensures libbpf won't emit warning about retrying map creation. Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210930161456.3444544-3-hengqi.chen@gmail.com
26 lines
553 B
C
26 lines
553 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (c) 2019 Facebook
|
|
|
|
#include <linux/ptrace.h>
|
|
#include <linux/bpf.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
|
|
__type(key, int);
|
|
__type(value, int);
|
|
} perf_buf_map SEC(".maps");
|
|
|
|
SEC("tp/raw_syscalls/sys_enter")
|
|
int handle_sys_enter(void *ctx)
|
|
{
|
|
int cpu = bpf_get_smp_processor_id();
|
|
|
|
bpf_perf_event_output(ctx, &perf_buf_map, BPF_F_CURRENT_CPU,
|
|
&cpu, sizeof(cpu));
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|