Em Tue, Apr 11, 2017 at 03:37:43PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Tue, Apr 11, 2017 at 03:35:58PM -0300, Arnaldo Carvalho de Melo escreveu: > > Ideas? Will dig deeper later, the warning in the perf test output > > doesn't help. > > > > Using perf as in acme/perf/core > > Humm, I had a long running 'perf top' session, as soon as I exited it > and tried again: > > [root@jouet ~]# perf test bpf > 38: BPF filter : > 38.1: Basic BPF filtering : Ok > 38.2: BPF pinning : Ok > 38.3: BPF prologue generation : Ok > 38.4: BPF relocation checker : Ok > [root@jouet ~]# > > Nevermind then, I'll check some stuff, if I manage to reproduce it > again, will report.
Yeah, if I run just 'perf test bpf', it works fine, but if I start a 'perf top' session and then, with it in place, try 'perf test bpf', it fails. - Arnaldo > - Arnaldo > > > [root@jouet ~]# perf test bpf > > 38: BPF filter : > > 38.1: Basic BPF filtering : Skip > > 38.2: BPF pinning : Skip > > 38.3: BPF prologue generation : Skip > > 38.4: BPF relocation checker : Skip > > [root@jouet ~]# perf test -v bpf > > 38: BPF filter : > > 38.1: Basic BPF filtering : > > --- start --- > > test child forked, pid 26303 > > Missing basic BPF support, skip this test: Operation not permitted > > test child finished with -2 > > ---- end ---- > > BPF filter subtest 0: Skip > > 38.2: BPF pinning : > > --- force skipped --- > > BPF filter subtest 1: Skip > > 38.3: BPF prologue generation : > > --- force skipped --- > > BPF filter subtest 2: Skip > > 38.4: BPF relocation checker : > > --- force skipped --- > > BPF filter subtest 3: Skip > > [root@jouet ~]# > > [root@jouet ~]# uname -a > > Linux jouet 4.11.0-rc6+ #7 SMP Tue Apr 11 11:53:14 -03 2017 x86_64 x86_64 > > x86_64 GNU/Linux > > [root@jouet ~]# grep ' t bpf' /proc/kallsyms > > ffffffff9b09e338 t bpf_slow_path_word > > ffffffff9b09e36a t bpf_slow_path_half > > ffffffff9b09e3a2 t bpf_slow_path_byte > > ffffffff9b09e3d3 t bpf_slow_path_word_neg > > ffffffff9b09e403 t bpf_slow_path_half_neg > > ffffffff9b09e435 t bpf_slow_path_byte_neg > > ffffffff9b09e460 t bpf_error > > ffffffff9b1a5450 t bpf_get_prog_name > > ffffffff9b1a69c0 t bpf_prog_kallsyms_find > > ffffffff9b1a7e80 t bpf_prog_free_deferred > > ffffffff9b1a9b50 t bpf_map_free_deferred > > ffffffff9b1a9b80 t bpf_map_put_uref > > ffffffff9b1a9ba0 t bpf_map_show_fdinfo > > ffffffff9b1a9c40 t bpf_prog_show_fdinfo > > ffffffff9b1a9e40 t bpf_prog_release > > ffffffff9b1a9e90 t bpf_prog_uncharge_memlock.isra.17 > > ffffffff9b1aa130 t bpf_map_release > > ffffffff9b1aa640 t bpf_prog_load > > ffffffff9b1b0370 t bpf_get_inode > > ffffffff9b1b0410 t bpf_dentry_finalize > > ffffffff9b1b0460 t bpf_mkdir > > ffffffff9b1b04d0 t bpf_symlink > > ffffffff9b1b0560 t bpf_lookup > > ffffffff9b1b05c0 t bpf_mount > > ffffffff9b1b05e0 t bpf_fill_super > > ffffffff9b1b06f0 t bpf_any_put > > ffffffff9b1b0740 t bpf_evict_inode > > ffffffff9b1b07b0 t bpf_mkobj > > ffffffff9b1b7eb0 t bpf_overflow_handler > > ffffffff9b751dd0 t bpf_convert_ctx_access > > ffffffff9b7525b0 t bpf_xdp_copy > > ffffffff9b7525d0 t bpf_convert_filter > > ffffffff9b753450 t bpf_get_skb_set_tunnel_proto > > ffffffff9b753af0 t bpf_prog_store_orig_filter.isra.37 > > ffffffff9b753e80 t bpf_base_func_proto > > ffffffff9b7541f0 t bpf_skb_copy > > ffffffff9b755630 t bpf_prepare_filter > > ffffffff9b762ee0 t bpf_encap_nlsize > > ffffffff9b762ef0 t bpf_lwt_prog_destroy > > ffffffff9b762f20 t bpf_destroy_state > > ffffffff9b762f50 t bpf_parse_prog > > ffffffff9b763010 t bpf_build_state > > ffffffff9b763190 t bpf_lwt_prog_cmp.isra.6 > > ffffffff9b7631c0 t bpf_encap_cmp > > ffffffff9b763490 t bpf_xmit > > ffffffff9b763530 t bpf_output > > ffffffff9b7635d0 t bpf_input > > ffffffff9b763660 t bpf_fill_lwt_prog > > ffffffff9b763700 t bpf_fill_encap_info > > ffffffff9bfb4046 t bpf_init > > ffffffff9bfefcd2 t bpf_lwt_init > > [root@jouet ~]# > > > > [root@jouet ~]# grep BPF ~acme/git/build/v4.11.0-rc6+/.config > > CONFIG_CGROUP_BPF=y > > CONFIG_BPF=y > > CONFIG_BPF_SYSCALL=y > > CONFIG_NETFILTER_XT_MATCH_BPF=m > > CONFIG_NET_CLS_BPF=m > > CONFIG_NET_ACT_BPF=m > > CONFIG_BPF_JIT=y > > CONFIG_LWTUNNEL_BPF=y > > CONFIG_HAVE_EBPF_JIT=y > > CONFIG_BPF_EVENTS=y > > # CONFIG_TEST_BPF is not set > > [root@jouet ~]# > > > > [root@jouet ~]# perf test LLVM > > 36: LLVM search and compile : > > 36.1: Basic BPF llvm compile : Ok > > 36.2: kbuild searching : Ok > > 36.3: Compile source for BPF prologue generation: Ok > > 36.4: Compile source for BPF relocation : Ok > > [root@jouet ~]#
