85209e839f
Adding test that attaches 50k usdt probes in usdt_multi binary. After the attach is done we run the binary and make sure we get proper amount of hits. With current uprobes: # perf stat --null ./test_progs -n 254/6 #254/6 uprobe_multi_test/bench_usdt:OK #254 uprobe_multi_test:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Performance counter stats for './test_progs -n 254/6': 1353.659680562 seconds time elapsed With uprobe_multi link: # perf stat --null ./test_progs -n 254/6 #254/6 uprobe_multi_test/bench_usdt:OK #254 uprobe_multi_test:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Performance counter stats for './test_progs -n 254/6': 0.322046364 seconds time elapsed Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20230809083440.3209381-26-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
17 lines
235 B
C
17 lines
235 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include "vmlinux.h"
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/usdt.bpf.h>
|
|
|
|
char _license[] SEC("license") = "GPL";
|
|
|
|
int count;
|
|
|
|
SEC("usdt")
|
|
int usdt0(struct pt_regs *ctx)
|
|
{
|
|
count++;
|
|
return 0;
|
|
}
|