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7cf245a37e
Fix all files in samples/bpf to include libbpf header files with the bpf/
prefix, to be consistent with external users of the library. Also ensure
that all includes of exported libbpf header files (those that are exported
on 'make install' of the library) use bracketed includes instead of quoted.
To make sure no new files are introduced that doesn't include the bpf/
prefix in its include, remove tools/lib/bpf from the include path entirely,
and use tools/lib instead.
Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <linux/perf_event.h>
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#include <linux/bpf.h>
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#include <errno.h>
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#include <assert.h>
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#include <sys/syscall.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <time.h>
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#include <signal.h>
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#include <bpf/libbpf.h>
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#include "bpf_load.h"
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#include "perf-sys.h"
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static __u64 time_get_ns(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ull + ts.tv_nsec;
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}
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static __u64 start_time;
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static __u64 cnt;
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#define MAX_CNT 100000ll
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static void print_bpf_output(void *ctx, int cpu, void *data, __u32 size)
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{
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struct {
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__u64 pid;
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__u64 cookie;
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} *e = data;
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if (e->cookie != 0x12345678) {
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printf("BUG pid %llx cookie %llx sized %d\n",
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e->pid, e->cookie, size);
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return;
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}
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cnt++;
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if (cnt == MAX_CNT) {
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printf("recv %lld events per sec\n",
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MAX_CNT * 1000000000ll / (time_get_ns() - start_time));
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return;
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}
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}
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int main(int argc, char **argv)
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{
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struct perf_buffer_opts pb_opts = {};
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struct perf_buffer *pb;
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char filename[256];
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FILE *f;
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int ret;
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snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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if (load_bpf_file(filename)) {
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printf("%s", bpf_log_buf);
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return 1;
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}
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pb_opts.sample_cb = print_bpf_output;
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pb = perf_buffer__new(map_fd[0], 8, &pb_opts);
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ret = libbpf_get_error(pb);
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if (ret) {
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printf("failed to setup perf_buffer: %d\n", ret);
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return 1;
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}
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f = popen("taskset 1 dd if=/dev/zero of=/dev/null", "r");
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(void) f;
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start_time = time_get_ns();
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while ((ret = perf_buffer__poll(pb, 1000)) >= 0 && cnt < MAX_CNT) {
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}
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kill(0, SIGINT);
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return ret;
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}
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