On 10/21/15 9:49 PM, Wangnan (F) wrote:
After applying this patch I'm unable to use perf passing perf_event again like this:
please do not top post and trim your replies.
# perf record -a -e evt=cycles -e ./test_config_map.c/maps.pmu_map.event=evt/ --exclude-perf ls With -v it output: ... adding perf_bpf_probe:func_write adding perf_bpf_probe:func_write to 0x367d6a0 add bpf event perf_bpf_probe:func_write_return and attach bpf program 6 adding perf_bpf_probe:func_write_return adding perf_bpf_probe:func_write_return to 0x3a7fc40 mmap size 528384B ERROR: failed to insert value to pmu_map[0] ERROR: Apply config to BPF failed: Invalid option for map, add -v to see detail Opening /sys/kernel/debug/tracing//kprobe_events write= ... Looks like perf sets attr.inherit for cycles? I'll look into this problem.
yes. that's perf default. How did it even work before?! I was testing with your samples/bpf/tracex6 that sets inherit to zero. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
