Hi,

I'm trying to read perf counters using bpf. However, adding
BPF_PERF_ARRAY reports error:

bpf: Invalid argument
unrecognized bpf_ld_imm64 inns

Is there an example/sample to read perf counters that I can follow?
The code below is what I'm trying to execute.

Thanks,
Riya

# load BPF program

bpf_text = """

#include <uapi/linux/ptrace.h>

BPF_PERF_ARRAY(my_map, 32);

int start_counting(struct pt_regs *ctx) {

if (!PT_REGS_PARM1(ctx))

return 0;

u64 count;

u32 key = bpf_get_smp_processor_id();

count = bpf_perf_event_read(&my_map, key);

bpf_trace_printk("CPU-%d %llu", key, count);

return 0;

}

"""