| Message ID | 20230104064402.1551516-4-namhyung@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | BPF |
| Headers | show |
| Series | perf bpf_counter: A set of random fixes (v1) | expand |
Em Tue, Jan 03, 2023 at 10:44:01PM -0800, Namhyung Kim escreveu: > When --for-each-cgroup option is used, it failed when any of events is not > supported and it exited immediately. This is not how perf stat handles the > unsupported events. Let's ignore the failure and proceed with others. > > Before: > $ sudo ./perf stat -a --bpf-counters -e L1-icache-loads,L1-dcache-loads \ > > --for-each-cgroup system.slice,user.slice sleep 1 > Failed to open first cgroup events Interesting, tried the above on a arm64 machine and it all works: root@roc-rk3399-pc:~# strace -e bpf,perf_event_open perf stat -a --bpf-counters -e L1-icache-loads,L1-dcache-loads --for-each-cgroup system.slice,user.slice sleep 1 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0xffffd36afc98, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0}, 116) = 5 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0xffffd36afee8, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0\20\0\0\0\20\0\0\0\5\0\0\0\1\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=45, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0000\0\0\0000\0\0\0\t\0\0\0\1\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=81, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\08\0\0\08\0\0\0\t\0\0\0\0\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=89, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0\f\0\0\0\f\0\0\0\7\0\0\0\1\0\0\0\0\0\0\20"..., btf_log_buf=NULL, btf_size=43, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0000\0\0\0000\0\0\0\t\0\0\0\1\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=81, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0000\0\0\0000\0\0\0\5\0\0\0\0\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=77, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0(\0\0\0(\0\0\0\5\0\0\0\0\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=69, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0\f\0\0\0\f\0\0\0\10\0\0\0\1\0\0\0\0\0\0\23"..., btf_log_buf=NULL, btf_size=44, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0@G\0\0@G\0\0\2725\0\0\0\0\0\0\0\0\0\2"..., btf_log_buf=NULL, btf_size=32018, btf_log_size=0, btf_log_level=0}, 28) = 5 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0xffffd36afb18, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="libbpf_nametest"}, 64) = 6 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=4, max_entries=1, map_flags=BPF_F_MMAPABLE, inner_map_fd=0, map_name="libbpf_mmap", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 6 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_PERF_EVENT_ARRAY, key_size=4, value_size=4, max_entries=12, map_flags=0, inner_map_fd=0, map_name="events", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 6 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_HASH, key_size=8, value_size=4, max_entries=2, map_flags=0, inner_map_fd=0, map_name="cgrp_idx", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 7 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_PERCPU_ARRAY, key_size=4, value_size=24, max_entries=2, map_flags=0, inner_map_fd=0, map_name="prev_readings", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 9 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_PERCPU_ARRAY, key_size=4, value_size=24, max_entries=4, map_flags=0, inner_map_fd=0, map_name="cgrp_readings", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 10 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=32, max_entries=1, map_flags=0, inner_map_fd=0, map_name="libbpf_global", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 11 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=5, insns=0xffffd36afb80, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 12 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=8, max_entries=1, map_flags=BPF_F_RDONLY_PROG|BPF_F_MMAPABLE, inner_map_fd=0, map_name="bperf_cg.rodata", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=413, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 11 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=11, key=0xffffd36afcdc, value=0xffff8da49000, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_FREEZE, {map_fd=11}, 4) = 0 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=8, max_entries=1, map_flags=BPF_F_MMAPABLE, inner_map_fd=0, map_name="bperf_cg.bss", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=410, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 12 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=12, key=0xffffd36afcdc, value=0xffff8da48000, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=4, max_entries=1, map_flags=BPF_F_MMAPABLE, inner_map_fd=0, map_name="bperf_cg.data", map_ifindex=0, btf_fd=5, btf_key_type_id=0, btf_value_type_id=411, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 13 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=13, key=0xffffd36afcdc, value=0xffff8da47000, flags=BPF_ANY}, 32) = 0 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_TRACEPOINT, insn_cnt=6, insns=0xffffd36afd48, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 14 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_PERF_EVENT, insn_cnt=306, insns=0xaaaaf14b9de0, license="Dual BSD/GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(6, 1, 0), prog_flags=0, prog_name="on_cgrp_switch", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=5, func_info_rec_size=8, func_info=0xaaaaf14baec0, func_info_cnt=2, line_info_rec_size=16, line_info=0xaaaaf1491390, line_info_cnt=109, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 14 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=32, max_entries=1, map_flags=0, inner_map_fd=0, map_name="libbpf_det_bind", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 15 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0xffffd36af358, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 16 bpf(BPF_PROG_BIND_MAP, 0xffffd36af288, 12) = 0 bpf(BPF_PROG_BIND_MAP, 0xffffd36af398, 12) = 0 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=306, insns=0xaaaaf1491a70, license="Dual BSD/GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(6, 1, 0), prog_flags=0, prog_name="trigger_read", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=5, func_info_rec_size=8, func_info=0xaaaaf14b9ad0, func_info_cnt=2, line_info_rec_size=16, line_info=0xaaaaf1492710, line_info_cnt=109, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 15 bpf(BPF_PROG_BIND_MAP, 0xffffd36af398, 12) = 0 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 0, -1, PERF_FLAG_FD_CLOEXEC) = 16 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 1, -1, PERF_FLAG_FD_CLOEXEC) = 17 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 2, -1, PERF_FLAG_FD_CLOEXEC) = 18 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 3, -1, PERF_FLAG_FD_CLOEXEC) = 19 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 4, -1, PERF_FLAG_FD_CLOEXEC) = 20 perf_event_open({type=PERF_TYPE_SOFTWARE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_SW_CGROUP_SWITCHES, sample_period=1, sample_type=0, read_format=0, disabled=1, precise_ip=0 /* arbitrary skid */, ...}, -1, 5, -1, PERF_FLAG_FD_CLOEXEC) = 21 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_TRACEPOINT, insn_cnt=2, insns=0xffffd36afe28, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 22 bpf(BPF_LINK_CREATE, {link_create={prog_fd=22, target_fd=-1, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = -1 EBADF (Bad file descriptor) bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=16, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 22 bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=17, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 23 bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=18, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 24 bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=19, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 25 bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=20, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 26 bpf(BPF_LINK_CREATE, {link_create={prog_fd=14, target_fd=21, attach_type=BPF_PERF_EVENT, flags=0}}, 48) = 27 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 0, -1, PERF_FLAG_FD_CLOEXEC) = 28 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 1, -1, PERF_FLAG_FD_CLOEXEC) = 29 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 2, -1, PERF_FLAG_FD_CLOEXEC) = 30 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 3, -1, PERF_FLAG_FD_CLOEXEC) = 31 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 4, -1, PERF_FLAG_FD_CLOEXEC) = 32 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1I, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 5, -1, PERF_FLAG_FD_CLOEXEC) = 33 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=7, key=0xaaaaf14c1c58, value=0xffffd36b005c, flags=BPF_ANY}, 32) = 0 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 0, -1, PERF_FLAG_FD_CLOEXEC) = 34 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 1, -1, PERF_FLAG_FD_CLOEXEC) = 35 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 2, -1, PERF_FLAG_FD_CLOEXEC) = 36 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 3, -1, PERF_FLAG_FD_CLOEXEC) = 37 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 4, -1, PERF_FLAG_FD_CLOEXEC) = 38 perf_event_open({type=PERF_TYPE_HW_CACHE, size=PERF_ATTR_SIZE_VER7, config=PERF_COUNT_HW_CACHE_RESULT_ACCESS<<16|PERF_COUNT_HW_CACHE_OP_READ<<8|PERF_COUNT_HW_CACHE_L1D, sample_period=0, sample_type=0, read_format=0, precise_ip=0 /* arbitrary skid */, exclude_guest=1, ...}, -1, 5, -1, PERF_FLAG_FD_CLOEXEC) = 39 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0xffffd36b00b0, value=0xffffd36b0060, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_UPDATE_ELEM, {map_fd=7, key=0xaaaaf14c2278, value=0xffffd36b005c, flags=BPF_ANY}, 32) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=0}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=0}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=1}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=2}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=3}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=4}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=5}}, 80) = 0 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8741, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=0}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=1}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=2}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=3}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=4}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=5}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=0}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=1}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=2}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=3}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=4}}, 80) = 0 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=15, retval=0, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0, ctx_size_in=0, ctx_size_out=0, ctx_in=NULL, ctx_out=NULL, flags=BPF_F_TEST_RUN_ON_CPU, cpu=5}}, 80) = 0 bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=10, key=0xffffd36b0004, value=0xaaaaf14be350, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=10, key=0xffffd36b0004, value=0xaaaaf14be350, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=10, key=0xffffd36b0004, value=0xaaaaf14be350, flags=BPF_ANY}, 32) = 0 bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=10, key=0xffffd36b0004, value=0xaaaaf14be350, flags=BPF_ANY}, 32) = 0 Performance counter stats for 'system wide': 46116 L1-icache-loads system.slice 15864 L1-dcache-loads system.slice 8685400 L1-icache-loads user.slice 3686787 L1-dcache-loads user.slice 1.021264798 seconds time elapsed --- SIGCHLD {si_signo=SIGCHLD, si_code=SI_USER, si_pid=8740, si_uid=0} --- +++ exited with 0 +++ root@roc-rk3399-pc:~# root@roc-rk3399-pc:~# perf -vv perf version 6.2.rc2.gfb710ddee75f dwarf: [ on ] # HAVE_DWARF_SUPPORT dwarf_getlocations: [ on ] # HAVE_DWARF_GETLOCATIONS_SUPPORT glibc: [ on ] # HAVE_GLIBC_SUPPORT syscall_table: [ on ] # HAVE_SYSCALL_TABLE_SUPPORT libbfd: [ on ] # HAVE_LIBBFD_SUPPORT debuginfod: [ OFF ] # HAVE_DEBUGINFOD_SUPPORT libelf: [ on ] # HAVE_LIBELF_SUPPORT libnuma: [ on ] # HAVE_LIBNUMA_SUPPORT numa_num_possible_cpus: [ on ] # HAVE_LIBNUMA_SUPPORT libperl: [ on ] # HAVE_LIBPERL_SUPPORT libpython: [ on ] # HAVE_LIBPYTHON_SUPPORT libslang: [ on ] # HAVE_SLANG_SUPPORT libcrypto: [ on ] # HAVE_LIBCRYPTO_SUPPORT libunwind: [ on ] # HAVE_LIBUNWIND_SUPPORT libdw-dwarf-unwind: [ on ] # HAVE_DWARF_SUPPORT zlib: [ on ] # HAVE_ZLIB_SUPPORT lzma: [ on ] # HAVE_LZMA_SUPPORT get_cpuid: [ on ] # HAVE_AUXTRACE_SUPPORT bpf: [ on ] # HAVE_LIBBPF_SUPPORT aio: [ on ] # HAVE_AIO_SUPPORT zstd: [ on ] # HAVE_ZSTD_SUPPORT libpfm4: [ OFF ] # HAVE_LIBPFM libtraceevent: [ on ] # HAVE_LIBTRACEEVENT root@roc-rk3399-pc:~# root@roc-rk3399-pc:~# head -8 /proc/cpuinfo processor : 0 BogoMIPS : 48.00 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 4 root@roc-rk3399-pc:~# uname -a Linux roc-rk3399-pc 6.1.0-rc5-00123-g4dd7ff4a0311 #2 SMP PREEMPT Wed Nov 16 19:55:11 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux root@roc-rk3399-pc:~# So these events are supported there, lets see with something else.. Before: root@roc-rk3399-pc:~# perf stat -a --bpf-counters -e LLC-loads,LLC-stores --for-each-cgroup system.slice,user.slice sleep 1 Failed to open first cgroup events root@roc-rk3399-pc:~# After: root@roc-rk3399-pc:~# perf stat -a --bpf-counters -e LLC-loads,LLC-stores --for-each-cgroup system.slice,user.slice sleep 1 Performance counter stats for 'system wide': <not supported> LLC-loads system.slice <not supported> LLC-stores system.slice <not supported> LLC-loads user.slice <not supported> LLC-stores user.slice 1.016196455 seconds time elapsed root@roc-rk3399-pc:~# And with mixed supported/unsupported: root@roc-rk3399-pc:~# perf stat -a --bpf-counters -e LLC-loads,LLC-stores,L1-icache-loads,L1-dcache-loads --for-each-cgroup system.slice,user.slice sleep 1 Performance counter stats for 'system wide': <not supported> LLC-loads system.slice <not supported> LLC-stores system.slice 180903 L1-icache-loads system.slice 66861 L1-dcache-loads system.slice <not supported> LLC-loads user.slice <not supported> LLC-stores user.slice 2948290 L1-icache-loads user.slice 1962675 L1-dcache-loads user.slice 1.016265003 seconds time elapsed root@roc-rk3399-pc:~# Applied, - Arnaldo > After: > $ sudo ./perf stat -a --bpf-counters -e L1-icache-loads,L1-dcache-loads \ > > --for-each-cgroup system.slice,user.slice sleep 1 > > Performance counter stats for 'system wide': > > <not supported> L1-icache-loads system.slice > 29,892,418 L1-dcache-loads system.slice > <not supported> L1-icache-loads user.slice > 52,497,220 L1-dcache-loads user.slice > > Fixes: 944138f048f7d ("perf stat: Enable BPF counter with --for-each-cgroup") > Signed-off-by: Namhyung Kim <namhyung@kernel.org> > --- > tools/perf/util/bpf_counter_cgroup.c | 14 +++----------- > 1 file changed, 3 insertions(+), 11 deletions(-) > > diff --git a/tools/perf/util/bpf_counter_cgroup.c b/tools/perf/util/bpf_counter_cgroup.c > index 3c2df7522f6f..1c82377ed78b 100644 > --- a/tools/perf/util/bpf_counter_cgroup.c > +++ b/tools/perf/util/bpf_counter_cgroup.c > @@ -116,27 +116,19 @@ static int bperf_load_program(struct evlist *evlist) > > /* open single copy of the events w/o cgroup */ > err = evsel__open_per_cpu(evsel, evsel->core.cpus, -1); > - if (err) { > - pr_err("Failed to open first cgroup events\n"); > - goto out; > - } > + if (err == 0) > + evsel->supported = true; > > map_fd = bpf_map__fd(skel->maps.events); > perf_cpu_map__for_each_cpu(cpu, j, evsel->core.cpus) { > int fd = FD(evsel, j); > __u32 idx = evsel->core.idx * total_cpus + cpu.cpu; > > - err = bpf_map_update_elem(map_fd, &idx, &fd, > - BPF_ANY); > - if (err < 0) { > - pr_err("Failed to update perf_event fd\n"); > - goto out; > - } > + bpf_map_update_elem(map_fd, &idx, &fd, BPF_ANY); > } > > evsel->cgrp = leader_cgrp; > } > - evsel->supported = true; > > if (evsel->cgrp == cgrp) > continue; > -- > 2.39.0.314.g84b9a713c41-goog
diff --git a/tools/perf/util/bpf_counter_cgroup.c b/tools/perf/util/bpf_counter_cgroup.c index 3c2df7522f6f..1c82377ed78b 100644 --- a/tools/perf/util/bpf_counter_cgroup.c +++ b/tools/perf/util/bpf_counter_cgroup.c @@ -116,27 +116,19 @@ static int bperf_load_program(struct evlist *evlist) /* open single copy of the events w/o cgroup */ err = evsel__open_per_cpu(evsel, evsel->core.cpus, -1); - if (err) { - pr_err("Failed to open first cgroup events\n"); - goto out; - } + if (err == 0) + evsel->supported = true; map_fd = bpf_map__fd(skel->maps.events); perf_cpu_map__for_each_cpu(cpu, j, evsel->core.cpus) { int fd = FD(evsel, j); __u32 idx = evsel->core.idx * total_cpus + cpu.cpu; - err = bpf_map_update_elem(map_fd, &idx, &fd, - BPF_ANY); - if (err < 0) { - pr_err("Failed to update perf_event fd\n"); - goto out; - } + bpf_map_update_elem(map_fd, &idx, &fd, BPF_ANY); } evsel->cgrp = leader_cgrp; } - evsel->supported = true; if (evsel->cgrp == cgrp) continue;