Re: [OS-BUILD PATCH 0/2] build system: run parallel make for bpf and kselftests install

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On Mon, Aug 17, 2020 at 04:36:44PM -0000, GitLab Bridge on behalf of dvlasenk wrote:
> From: dvlasenk on gitlab.com
> 
> Before: completely single-threaded load, 9 minutes:
> 
> ~/rpmbuild/BUILD/kernel-4.18.0-193.7.1.el8_2.test/linux-4.18.0-193.7.1.e
> l8.test.aarch64
> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' headers_install
> 06:48:06 p: 583/ 140 b:   0    0
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> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' -s ARCH=arm64 V=1
> samples/bpf/
> 06:48:07 p: 583/ 243 b:   0    0
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> 06:48:09 p: 586/ 175 b:   0 8192
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> samples/bpf/Makefile:206: WARNING: Detected possible issues with include
> path.
> samples/bpf/Makefile:207: WARNING: Please install kernel headers locally
> (make headers_install).
> 06:48:10 p: 584/ 168 b:   0    0
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> 06:48:11 p: 587/  96 b:   0 276k
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> Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs
> from latest version at 'include/uapi/linux/bpf.h'
> Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h'
> differs from latest version at 'include/uapi/linux/if_link.h'
> 06:48:12 p: 587/  46 b:   0 160k
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> 06:48:16 p: 585/  55 b:   0 8192
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> 06:48:17 p: 586/  30 b:   0 1.6m
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> samples/bpf/../../tools/testing/selftests/bpf/cgroup_helpers.c:44:5:
> warning: no previous prototype for 'enable_all_controllers' [-Wmissing-
> prototypes]
>  int enable_all_controllers(char *cgroup_path)
>      ^~~~~~~~~~~~~~~~~~~~~~
> 06:48:27 p: 585/  25 b:   0 376k
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> 06:48:34 p: 584/  22 b:   0 3.7m
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> 06:48:36 p: 584/  22 b:   0    0
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>   CLANG-bpf  samples/bpf/sockex1_kern.o
>   CLANG-bpf  samples/bpf/sockex2_kern.o
> 06:48:37 p: 584/  17 b:   0  11m
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> 06:48:38 p: 584/   2 b:   0    0
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>   CLANG-bpf  samples/bpf/sockex3_kern.o
> 06:48:39 p: 584/   5 b:   0    0
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> 06:48:40 p: 584/   0 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex1_kern.o
> 06:48:41 p: 584/   5 b:   0    0
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> 06:48:42 p: 584/   0 b:   0 224k
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> 06:48:43 p: 584/   2 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex2_kern.o
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> 06:48:45 p: 583/   0 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex3_kern.o
> 06:48:46 p: 582/   4 b:   0    0
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> 06:48:47 p: 583/   1 b:   0 7.1m
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> 06:48:48 p: 583/   2 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex4_kern.o
> 06:48:49 p: 583/   5 b:   0    0
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> 06:48:50 p: 583/   0 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex5_kern.o
> 06:48:51 p: 583/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex6_kern.o
> 06:48:52 p: 583/   5 b:   0  13m
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> 06:48:53 p: 583/   2 b:   0    0
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>   CLANG-bpf  samples/bpf/tracex7_kern.o
>   CLANG-bpf  samples/bpf/sock_flags_kern.o
> 06:48:54 p: 583/  10 b:   0    0
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>   CLANG-bpf  samples/bpf/test_probe_write_user_kern.o
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> 06:48:57 p: 583/   0 b:   0  12m
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>   CLANG-bpf  samples/bpf/trace_output_kern.o
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>   CLANG-bpf  samples/bpf/tcbpf1_kern.o
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>   CLANG-bpf  samples/bpf/tc_l2_redirect_kern.o
> 06:49:01 p: 583/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/lathist_kern.o
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>   CLANG-bpf  samples/bpf/offwaketime_kern.o
> 06:49:06 p: 583/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/spintest_kern.o
> 06:49:07 p: 583/   5 b:   0  10m
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>   CLANG-bpf  samples/bpf/map_perf_test_kern.o
> 06:49:10 p: 583/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/test_overhead_tp_kern.o
> 06:49:12 p: 583/   5 b:   0 136k
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>   CLANG-bpf  samples/bpf/test_overhead_raw_tp_kern.o
>   CLANG-bpf  samples/bpf/test_overhead_kprobe_kern.o
> 06:49:13 p: 583/  12 b:   0    0
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>   CLANG-bpf  samples/bpf/parse_varlen.o
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>   CLANG-bpf  samples/bpf/parse_simple.o
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>   CLANG-bpf  samples/bpf/parse_ldabs.o
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>   CLANG-bpf  samples/bpf/test_cgrp2_tc_kern.o
> 06:49:24 p: 584/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/xdp1_kern.o
> 06:49:25 p: 584/   5 b:   0    0
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> 06:49:27 p: 584/   0 b:   0  64k
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>   CLANG-bpf  samples/bpf/xdp2_kern.o
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>   CLANG-bpf  samples/bpf/xdp_router_ipv4_kern.o
> 06:49:31 p: 583/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/test_current_task_under_cgroup_kern.o
> 06:49:34 p: 582/   5 b:   0 0.9m
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> 06:49:35 p: 582/   0 b:   0  12k
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>   CLANG-bpf  samples/bpf/trace_event_kern.o
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> 06:49:37 p: 582/   0 b:   0 216k
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>   CLANG-bpf  samples/bpf/sampleip_kern.o
> 06:49:38 p: 582/   7 b:   0    0
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>   CLANG-bpf  samples/bpf/lwt_len_hist_kern.o
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>   CLANG-bpf  samples/bpf/xdp_tx_iptunnel_kern.o
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>   CLANG-bpf  samples/bpf/test_map_in_map_kern.o
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>   CLANG-bpf  samples/bpf/tcp_synrto_kern.o
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>   CLANG-bpf  samples/bpf/tcp_rwnd_kern.o
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>   CLANG-bpf  samples/bpf/tcp_bufs_kern.o
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>   CLANG-bpf  samples/bpf/tcp_cong_kern.o
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>   CLANG-bpf  samples/bpf/tcp_iw_kern.o
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>   CLANG-bpf  samples/bpf/tcp_clamp_kern.o
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>   CLANG-bpf  samples/bpf/tcp_basertt_kern.o
> 06:49:53 p: 580/   6 b:   0 216k
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>   CLANG-bpf  samples/bpf/tcp_tos_reflect_kern.o
> 06:49:55 p: 581/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/tcp_dumpstats_kern.o
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>   CLANG-bpf  samples/bpf/xdp_redirect_kern.o
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>   CLANG-bpf  samples/bpf/xdp_redirect_map_kern.o
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>   CLANG-bpf  samples/bpf/xdp_redirect_cpu_kern.o
> 06:50:03 p: 581/   7 b:   0  64k
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>   CLANG-bpf  samples/bpf/xdp_monitor_kern.o
>   CLANG-bpf  samples/bpf/xdp_rxq_info_kern.o
> 06:50:05 p: 580/  10 b:   0 328k
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>   CLANG-bpf  samples/bpf/xdp2skb_meta_kern.o
>   CLANG-bpf  samples/bpf/syscall_tp_kern.o
>   CLANG-bpf  samples/bpf/cpustat_kern.o
> 06:50:07 p: 580/  15 b:   0    0
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>   CLANG-bpf  samples/bpf/xdp_adjust_tail_kern.o
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>   CLANG-bpf  samples/bpf/xdp_fwd_kern.o
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>   CLANG-bpf  samples/bpf/task_fd_query_kern.o
> 06:50:15 p: 579/   5 b:   0    0
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>   CLANG-bpf  samples/bpf/xdp_sample_pkts_kern.o
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>   CLANG-bpf  samples/bpf/hbm_out_kern.o
> 06:50:18 p: 580/   7 b:   0 120k
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>   CLANG-bpf  samples/bpf/hbm_edt_kern.o
> 06:50:21 p: 580/   5 b:   0    0
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> + pushd tools/testing/selftests
> ~/rpmbuild/BUILD/kernel-4.18.0-193.7.1.el8_2.test/linux-4.18.0-193.7.1.e
> l8.test.aarch64/tools/testing/selftests ~/rpmbuild/BUILD/kernel-4.18.0-1
> 93.7.1.el8_2.test/linux-4.18.0-193.7.1.el8.test.aarch64
> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' -s ARCH=arm64 V=1
> 'TARGETS=bpf livepatch net' INSTALL_PATH=/root/rpmbuild/BUILDROOT/kernel
> -4.18.0-193.7.1.el8.test.aarch64/usr/libexec/kselftests install
> 06:50:25 p: 582/  75 b:   0    0
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> 06:50:26 p: 583/  44 b:   0    0
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> 
> Auto-detecting system features:
> ...                        libelf: [ on  ]
> ...                           bpf: [ on  ]
> 
> 06:50:27 p: 583/  59 b:   0    0
> U...............................................
> Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs
> from latest version at 'include/uapi/linux/bpf.h'
> Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h'
> differs from latest version at 'include/uapi/linux/if_link.h'
> 06:50:28 p: 583/  48 b:   0 144k
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> 06:51:15 p: 578/  19 b:   0    0
> U...............................................
> 06:51:16 p: 578/   9 b:   0    0
> U...............................................
> 06:51:17 p: 577/  22 b:   0 184k
> U...............................................
> 06:51:18 p: 579/   8 b:   0  24k
> U...............................................
> 06:51:19 p: 579/   0 b:   0    0
> U...............................................
> 06:51:20 p: 579/   0 b:   0    0
> U...............................................
> 06:51:21 p: 579/   0 b:   0    0
> U...............................................
> 06:51:22 p: 579/   0 b:   0    0
> U...............................................
> 06:51:23 p: 578/   2 b:   0 5.0m
> U...............................................
> 06:51:24 p: 578/   0 b:   0    0
> U...............................................
> 06:51:25 p: 578/   0 b:   0    0
> U...............................................
> 06:51:26 p: 578/   0 b:   0    0
> U...............................................
> 06:51:27 p: 578/   0 b:   0    0
> U...............................................
> 06:51:28 p: 578/   2 b:   0 3.8m
> U...............................................
> 06:51:29 p: 578/   0 b:   0    0
> U...............................................
> 06:51:30 p: 578/   0 b:   0    0
> U...............................................
> 06:51:31 p: 578/   0 b:   0    0
> U...............................................
> 06:51:32 p: 574/   0 b:   0    0
> U...............................................
> 06:51:33 p: 574/   2 b:   0 6.8m
> U...............................................
> 06:51:34 p: 574/   0 b:   0    0
> U...............................................
> 06:51:35 p: 574/   0 b:   0 712k
> U...............................................
> 06:51:36 p: 574/   0 b:   0    0
> U...............................................
> 06:51:37 p: 574/   0 b:   0    0
> U...............................................
> 06:51:38 p: 574/   2 b:   0 5.4m
> U...............................................
> 06:51:39 p: 574/   0 b:   0    0
> U...............................................
> 06:51:40 p: 574/   0 b:   0    0
> U...............................................
> 06:51:41 p: 574/   0 b:   0    0
> U...............................................
> 06:51:42 p: 574/   0 b:   0    0
> U...............................................
> 06:51:43 p: 576/   6 b:   0    0
> U...............................................
> 06:51:44 p: 574/  22 b:   0 5.8m
> U...............................................
> 06:51:45 p: 575/  19 b:   0    0
> U...............................................
> 06:51:46 p: 571/  21 b:   0    0
> U...............................................
> 06:51:47 p: 571/  18 b:   0    0
> U...............................................
> 06:51:48 p: 573/   8 b:   0    0
> U...............................................
> 06:51:49 p: 572/   0 b:   0 3.6m
> U...............................................
> 06:51:50 p: 572/   0 b:   0    0
> U...............................................
> 06:51:51 p: 569/   0 b:   0    0
> U...............................................
> 06:51:52 p: 569/   0 b:   0    0
> U...............................................
> 06:51:53 p: 569/   2 b:   0    0
> U...............................................
> 06:51:54 p: 571/  18 b:   0    0
> U...............................................
> 06:51:55 p: 570/  13 b:   0    0
> U...............................................
> 06:51:56 p: 569/  17 b:   0    0
> U...............................................
> 06:51:57 p: 570/  19 b:   0    0
> U...............................................
> 06:51:58 p: 571/  16 b:   0    0
> U...............................................
> 06:51:59 p: 570/   0 b:   0    0
> U...............................................
> 06:52:00 p: 570/   0 b:   0    0
> U...............................................
> 06:52:01 p: 570/   0 b:   0    0
> U...............................................
> 06:52:02 p: 570/   0 b:   0    0
> U...............................................
> 06:52:03 p: 570/   2 b:   0    0
> U...............................................
> 06:52:04 p: 570/   0 b:   0    0
> U...............................................
> 06:52:05 p: 570/   0 b:   0 332k
> U...............................................
> 06:52:06 p: 570/   0 b:   0    0
> U...............................................
> 06:52:07 p: 570/   0 b:   0    0
> U...............................................
> 06:52:08 p: 570/   2 b:   0    0
> U...............................................
> 06:52:09 p: 570/   0 b:   0    0
> U...............................................
> 06:52:10 p: 570/   0 b:   0    0
> U...............................................
> 06:52:11 p: 567/   0 b:   0    0
> U...............................................
> 06:52:12 p: 567/   0 b:   0    0
> U...............................................
> 06:52:13 p: 566/   2 b:   0    0
> U...............................................
> 06:52:14 p: 566/   0 b:   0 5.4m
> U...............................................
> 06:52:15 p: 566/   0 b:   0    0
> U...............................................
> 06:52:16 p: 566/   0 b:   0    0
> U...............................................
> 06:52:17 p: 567/   1 b:   0 112k
> U...............................................
> 06:52:18 p: 567/   2 b:   0    0
> U...............................................
> 06:52:19 p: 567/   0 b:   0 152k
> U...............................................
> 06:52:20 p: 567/   0 b:   0    0
> U...............................................
> 06:52:21 p: 567/   0 b:   0    0
> U...............................................
> 06:52:22 p: 567/   0 b:   0    0
> U...............................................
> 06:52:23 p: 567/   2 b:   0    0
> U...............................................
> 06:52:24 p: 567/   0 b:   0 1.6m
> U...............................................
> 06:52:25 p: 567/   0 b:   0    0
> U...............................................
> 06:52:26 p: 567/   0 b:   0    0
> U...............................................
> 06:52:27 p: 567/   0 b:   0    0
> U...............................................
> 06:52:28 p: 567/   2 b:   0    0
> U...............................................
> 06:52:29 p: 567/   0 b:   0 328k
> U...............................................
> 06:52:30 p: 570/  18 b:   0    0
> U...............................................
> 06:52:31 p: 568/  21 b:   0    0
> U...............................................
> 06:52:32 p: 567/  18 b:   0    0
> U...............................................
> 06:52:33 p: 568/  21 b:   0    0
> U...............................................
> 06:52:34 p: 568/  18 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_ints.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:52:35 p: 568/  23 b:   0 392k
> U...............................................
> 06:52:36 p: 568/  18 b:   0    0
> U...............................................
> 06:52:37 p: 567/  22 b:   0    0
> U...............................................
> 06:52:38 p: 567/  20 b:   0    0
> U...............................................
> 06:52:39 p: 568/  19 b:   0    0
> U...............................................
> 06:52:40 p: 568/  22 b:   0    0
> U...............................................
> 06:52:41 p: 569/  19 b:   0    0
> U...............................................
> 06:52:42 p: 569/  18 b:   0    0
> U...............................................
> 06:52:43 p: 567/  23 b:   0    0
> U...............................................
> 06:52:44 p: 567/   9 b:   0    0
> U...............................................
> 06:52:45 p: 568/  19 b:   0    0
> U...............................................
> 06:52:46 p: 568/  22 b:   0    0
> U...............................................
> 06:52:47 p: 569/  19 b:   0    0
> U...............................................
> 06:52:48 p: 567/  23 b:   0    0
> U...............................................
> 06:52:49 p: 568/  19 b:   0 104k
> U...............................................
> 06:52:50 p: 569/  23 b:   0    0
> U...............................................
> 06:52:51 p: 569/  18 b:   0    0
> U...............................................
> 06:52:52 p: 567/  12 b:   0    0
> U...............................................
> 06:52:53 p: 569/  17 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_nesting.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:52:54 p: 566/  18 b:   0    0
> U...............................................
> 06:52:55 p: 568/  17 b:   0    0
> U...............................................
> 06:52:56 p: 568/   9 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_mods.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:52:57 p: 569/  19 b:   0    0
> U...............................................
> 06:52:58 p: 566/  20 b:   0    0
> U...............................................
> 06:52:59 p: 568/  13 b:   0  40k
> U...............................................
> 06:53:00 p: 566/  14 b:   0    0
> U...............................................
> 06:53:01 p: 567/  21 b:   0    0
> U...............................................
> 06:53:02 p: 568/  19 b:   0    0
> U...............................................
> 06:53:03 p: 569/  16 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_ptr_as_arr.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:04 p: 568/  22 b:   0 4.8m
> U...............................................
> 06:53:05 p: 567/  17 b:   0 564k
> U...............................................
> 06:53:06 p: 568/  19 b:   0    0
> U...............................................
> 06:53:07 p: 568/  22 b:   0    0
> U...............................................
> 06:53:08 p: 569/  21 b:   0    0
> U...............................................
> 06:53:09 p: 568/  22 b:   0 216k
> U...............................................
> 06:53:10 p: 569/  14 b:   0    0
> U...............................................
> 06:53:11 p: 569/   0 b:   0    0
> U...............................................
> 06:53:12 p: 569/   0 b:   0    0
> U...............................................
> 06:53:13 p: 569/   2 b:   0    0
> U...............................................
> 06:53:14 p: 566/   0 b:   0 168k
> U...............................................
> 06:53:15 p: 566/   0 b:   0    0
> U...............................................
> 06:53:16 p: 568/  13 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_misc.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:17 p: 569/  19 b:   0 148k
> U...............................................
> 06:53:18 p: 569/  20 b:   0    0
> U...............................................
> 06:53:19 p: 570/  23 b:   0 264k
> U...............................................
> In file included from progs/test_core_reloc_primitives.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:20 p: 570/  18 b:   0    0
> U...............................................
> 06:53:21 p: 570/  18 b:   0    0
> U...............................................
> 06:53:22 p: 570/   0 b:   0    0
> U...............................................
> 06:53:23 p: 570/   2 b:   0    0
> U...............................................
> 06:53:24 p: 570/   0 b:   0 328k
> U...............................................
> 06:53:25 p: 570/   0 b:   0    0
> U...............................................
> 06:53:26 p: 570/   0 b:   0    0
> U...............................................
> 06:53:27 p: 570/   0 b:   0    0
> U...............................................
> 06:53:28 p: 570/   2 b:   0    0
> U...............................................
> 06:53:29 p: 570/   0 b:   0 520k
> U...............................................
> 06:53:30 p: 570/   0 b:   0    0
> U...............................................
> 06:53:31 p: 567/   0 b:   0    0
> U...............................................
> 06:53:32 p: 566/   0 b:   0    0
> U...............................................
> 06:53:33 p: 566/   2 b:   0    0
> U...............................................
> 06:53:34 p: 566/   0 b:   0 440k
> U...............................................
> 06:53:35 p: 566/   0 b:   0 520k
> U...............................................
> 06:53:36 p: 566/   9 b:   0    0
> U...............................................
> 06:53:37 p: 569/  18 b:   0    0
> U...............................................
> 06:53:38 p: 569/  20 b:   0    0
> U...............................................
> 06:53:39 p: 567/   3 b:   0 232k
> U...............................................
> In file included from progs/test_core_reloc_existence.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:40 p: 568/  19 b:   0    0
> U...............................................
> 06:53:41 p: 569/  23 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_flavors.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:42 p: 566/  18 b:   0    0
> U...............................................
> 06:53:43 p: 569/  20 b:   0    0
> U...............................................
> 06:53:44 p: 569/   9 b:   0 8192
> U...............................................
> 06:53:45 p: 569/   0 b:   0    0
> U...............................................
> 06:53:46 p: 569/   0 b:   0    0
> U...............................................
> 06:53:47 p: 569/   0 b:   0    0
> U...............................................
> 06:53:48 p: 569/   2 b:   0    0
> U...............................................
> 06:53:49 p: 569/   0 b:   0    0
> U...............................................
> 06:53:50 p: 569/   0 b:   0 1.4m
> U...............................................
> 06:53:51 p: 566/   0 b:   0    0
> U...............................................
> 06:53:52 p: 566/   0 b:   0    0
> U...............................................
> 06:53:53 p: 566/   2 b:   0    0
> U...............................................
> 06:53:54 p: 566/   0 b:   0    0
> U...............................................
> 06:53:55 p: 566/   0 b:   0 104k
> U...............................................
> 06:53:56 p: 566/   0 b:   0    0
> U...............................................
> 06:53:57 p: 566/   0 b:   0    0
> U...............................................
> 06:53:58 p: 569/  20 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_arrays.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:53:59 p: 567/  21 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_kernel.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:54:00 p: 567/  18 b:   0    0
> U...............................................
> 06:54:01 p: 568/  19 b:   0    0
> U...............................................
> 06:54:02 p: 568/  18 b:   0    0
> U...............................................
> 06:54:03 p: 568/  24 b:   0    0
> U...............................................
> 06:54:04 p: 568/  18 b:   0    0
> U...............................................
> 06:54:05 p: 566/  10 b:   0 444k
> U...............................................
> 06:54:06 p: 569/  18 b:   0    0
> U...............................................
> 06:54:07 p: 566/  18 b:   0  40k
> U...............................................
> 06:54:08 p: 566/   8 b:   0 232k
> U...............................................
> 06:54:09 p: 566/   6 b:   0 688k
> U...............................................
> 06:54:10 p: 566/   6 b:   0 2.2m
> U...............................................
> 06:54:11 p: 566/   8 b:   0 648k
> U...............................................
> 06:54:12 p: 566/   8 b:   0 528k
> U...............................................
> 06:54:13 p: 566/  10 b:   0 512k
> U...............................................
> 06:54:14 p: 566/   8 b:   0 712k
> U...............................................
> 06:54:15 p: 566/   6 b:   0 776k
> U...............................................
> 06:54:16 p: 566/   8 b:   0 608k
> U...............................................
> 06:54:17 p: 567/   9 b:   0 752k
> U...............................................
> 06:54:18 p: 567/  14 b:   0 136k
> U...............................................
> 06:54:19 p: 570/  18 b:   0    0
> U...............................................
> 06:54:20 p: 570/  18 b:   0    0
> U...............................................
> 06:54:21 p: 570/   0 b:   0    0
> U...............................................
> 06:54:22 p: 570/   0 b:   0    0
> U...............................................
> 06:54:23 p: 570/   2 b:   0    0
> U...............................................
> 06:54:24 p: 570/   0 b:   0    0
> U...............................................
> 06:54:25 p: 570/   0 b:   0    0
> U...............................................
> 06:54:26 p: 570/   0 b:   0    0
> U...............................................
> 06:54:27 p: 570/   0 b:   0    0
> U...............................................
> 06:54:28 p: 570/   2 b:   0    0
> U...............................................
> 06:54:29 p: 570/   0 b:   0    0
> U...............................................
> 06:54:30 p: 570/   0 b:   0 3.2m
> U...............................................
> 06:54:31 p: 570/   0 b:   0    0
> U...............................................
> 06:54:32 p: 569/   0 b:   0    0
> U...............................................
> 06:54:33 p: 569/   2 b:   0    0
> U...............................................
> 06:54:34 p: 569/   0 b:   0    0
> U...............................................
> 06:54:35 p: 566/   0 b:   0 0.9m
> U...............................................
> 06:54:36 p: 566/   0 b:   0    0
> U...............................................
> 06:54:37 p: 566/   0 b:   0    0
> U...............................................
> 06:54:38 p: 566/   2 b:   0    0
> U...............................................
> 06:54:39 p: 566/   0 b:   0    0
> U...............................................
> 06:54:40 p: 566/   0 b:   0 296k
> U...............................................
> 06:54:41 p: 566/   0 b:   0    0
> U...............................................
> 06:54:42 p: 566/   0 b:   0    0
> U...............................................
> 06:54:43 p: 566/   2 b:   0    0
> U...............................................
> 06:54:44 p: 566/   0 b:   0    0
> U...............................................
> 06:54:45 p: 566/   0 b:   0    0
> U...............................................
> 06:54:46 p: 569/   9 b:   0    0
> U...............................................
> 06:54:47 p: 566/  18 b:   0    0
> U...............................................
> 06:54:48 p: 567/  23 b:   0    0
> U...............................................
> 06:54:49 p: 568/  23 b:   0    0
> U...............................................
> 06:54:50 p: 568/  18 b:   0 2.0m
> U...............................................
> 06:54:51 p: 569/   1 b:   0    0
> U...............................................
> 06:54:52 p: 569/   0 b:   0    0
> U...............................................
> 06:54:53 p: 569/   2 b:   0    0
> U...............................................
> 06:54:54 p: 566/   0 b:   0    0
> U...............................................
> 06:54:55 p: 566/   0 b:   0  32k
> U...............................................
> 06:54:56 p: 567/   3 b:   0    0
> U...............................................
> 06:54:57 p: 569/  15 b:   0    0
> U...............................................
> 06:54:58 p: 568/  19 b:   0    0
> U...............................................
> 06:54:59 p: 568/  14 b:   0    0
> U...............................................
> 06:55:00 p: 568/  22 b:   0    0
> U...............................................
> 06:55:01 p: 569/  10 b:   0    0
> U...............................................
> 06:55:02 p: 569/   0 b:   0    0
> U...............................................
> 06:55:03 p: 569/   2 b:   0    0
> U...............................................
> 06:55:04 p: 569/   0 b:   0    0
> U...............................................
> 06:55:05 p: 569/   0 b:   0 244k
> U...............................................
> 06:55:06 p: 569/   0 b:   0    0
> U...............................................
> 06:55:07 p: 569/   0 b:   0    0
> U...............................................
> 06:55:08 p: 569/   2 b:   0    0
> U...............................................
> 06:55:09 p: 569/   0 b:   0    0
> U...............................................
> 06:55:10 p: 569/   0 b:   0    0
> U...............................................
> 06:55:11 p: 569/   0 b:   0    0
> U...............................................
> 06:55:12 p: 569/   0 b:   0    0
> U...............................................
> 06:55:13 p: 569/   2 b:   0    0
> U...............................................
> 06:55:14 p: 566/   0 b:   0    0
> U...............................................
> 06:55:15 p: 566/   0 b:   0  64k
> U...............................................
> 06:55:16 p: 566/   0 b:   0    0
> U...............................................
> 06:55:17 p: 567/   1 b:   0 100k
> U...............................................
> 06:55:18 p: 567/   2 b:   0    0
> U...............................................
> 06:55:19 p: 567/   0 b:   0    0
> U...............................................
> 06:55:20 p: 567/   0 b:   0 5.4m
> U...............................................
> 06:55:21 p: 567/   0 b:   0    0
> U...............................................
> 06:55:22 p: 567/   0 b:   0    0
> U...............................................
> 06:55:23 p: 567/   2 b:   0    0
> U...............................................
> 06:55:24 p: 567/   0 b:   0    0
> U...............................................
> 06:55:25 p: 567/   0 b:   0  16k
> U...............................................
> 06:55:26 p: 567/   0 b:   0    0
> U...............................................
> 06:55:27 p: 567/   0 b:   0    0
> U...............................................
> 06:55:28 p: 567/   2 b:   0    0
> U...............................................
> 06:55:29 p: 567/   0 b:   0    0
> U...............................................
> 06:55:30 p: 567/   0 b:   0 1.8m
> U...............................................
> 06:55:31 p: 567/   0 b:   0    0
> U...............................................
> 06:55:32 p: 566/   0 b:   0    0
> U...............................................
> 06:55:33 p: 569/  20 b:   0    0
> U...............................................
> 06:55:34 p: 568/  22 b:   0    0
> U...............................................
> 06:55:35 p: 568/  18 b:   0 224k
> U...............................................
> 06:55:36 p: 568/  22 b:   0    0
> U...............................................
> 06:55:37 p: 568/  18 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_ints.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:55:38 p: 569/  21 b:   0    0
> U...............................................
> 06:55:39 p: 569/  18 b:   0    0
> U...............................................
> 06:55:40 p: 567/  21 b:   0    0
> U...............................................
> 06:55:41 p: 567/  18 b:   0    0
> U...............................................
> 06:55:42 p: 568/  19 b:   0    0
> U...............................................
> 06:55:43 p: 569/  25 b:   0    0
> U...............................................
> 06:55:44 p: 567/  21 b:   0    0
> U...............................................
> 06:55:45 p: 569/  15 b:   0    0
> U...............................................
> 06:55:46 p: 567/  21 b:   0    0
> U...............................................
> 06:55:47 p: 568/  10 b:   0    0
> U...............................................
> 06:55:48 p: 568/  24 b:   0    0
> U...............................................
> 06:55:49 p: 569/  19 b:   0    0
> U...............................................
> 06:55:50 p: 567/  21 b:   0 176k
> U...............................................
> 06:55:51 p: 568/  19 b:   0    0
> U...............................................
> 06:55:52 p: 568/  22 b:   0    0
> U...............................................
> 06:55:53 p: 569/  21 b:   0    0
> U...............................................
> 06:55:54 p: 569/  18 b:   0    0
> U...............................................
> 06:55:55 p: 568/  13 b:   0    0
> U...............................................
> 06:55:56 p: 567/  17 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_nesting.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:55:57 p: 567/  18 b:   0    0
> U...............................................
> 06:55:58 p: 569/  17 b:   0 104k
> U...............................................
> 06:55:59 p: 569/   9 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_mods.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:00 p: 569/  18 b:   0    0
> U...............................................
> 06:56:01 p: 568/  22 b:   0    0
> U...............................................
> 06:56:02 p: 569/  14 b:   0    0
> U...............................................
> 06:56:03 p: 570/  12 b:   0    0
> U...............................................
> 06:56:04 p: 568/  21 b:   0    0
> U...............................................
> 06:56:05 p: 569/  19 b:   0    0
> U...............................................
> 06:56:06 p: 570/  14 b:   0 4.9m
> U...............................................
> In file included from progs/test_core_reloc_ptr_as_arr.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:07 p: 568/  21 b:   0    0
> U...............................................
> 06:56:08 p: 567/  17 b:   0    0
> U...............................................
> 06:56:09 p: 568/  21 b:   0    0
> U...............................................
> 06:56:10 p: 569/  23 b:   0    0
> U...............................................
> 06:56:11 p: 570/  19 b:   0 248k
> U...............................................
> 06:56:12 p: 568/  21 b:   0    0
> U...............................................
> 06:56:13 p: 570/  17 b:   0    0
> U...............................................
> 06:56:14 p: 570/   0 b:   0    0
> U...............................................
> 06:56:15 p: 570/   0 b:   0    0
> U...............................................
> 06:56:16 p: 570/   0 b:   0 224k
> U...............................................
> 06:56:17 p: 568/   1 b:   0 172k
> U...............................................
> 06:56:18 p: 569/   5 b:   0    0
> U...............................................
> 06:56:19 p: 568/  15 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_misc.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:20 p: 569/  21 b:   0    0
> U...............................................
> 06:56:21 p: 570/  19 b:   0 312k
> U...............................................
> 06:56:22 p: 570/  18 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_primitives.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:23 p: 570/  24 b:   0    0
> U...............................................
> 06:56:24 p: 571/  10 b:   0    0
> U...............................................
> 06:56:25 p: 571/   0 b:   0    0
> U...............................................
> 06:56:26 p: 571/   0 b:   0 256k
> U...............................................
> 06:56:27 p: 571/   0 b:   0    0
> U...............................................
> 06:56:28 p: 571/   2 b:   0    0
> U...............................................
> 06:56:29 p: 571/   0 b:   0    0
> U...............................................
> 06:56:30 p: 571/   0 b:   0    0
> U...............................................
> 06:56:31 p: 571/   0 b:   0 464k
> U...............................................
> 06:56:32 p: 570/   0 b:   0    0
> U...............................................
> 06:56:33 p: 567/   2 b:   0    0
> U...............................................
> 06:56:34 p: 567/   0 b:   0    0
> U...............................................
> 06:56:35 p: 567/   0 b:   0    0
> U...............................................
> 06:56:36 p: 567/   0 b:   0 764k
> U...............................................
> 06:56:37 p: 567/   0 b:   0    0
> U...............................................
> 06:56:38 p: 569/  10 b:   0    0
> U...............................................
> 06:56:39 p: 570/  10 b:   0    0
> U...............................................
> 06:56:40 p: 568/  21 b:   0    0
> U...............................................
> 06:56:41 p: 567/   6 b:   0 344k
> U...............................................
> 06:56:42 p: 569/  13 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_existence.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:43 p: 569/  24 b:   0    0
> U...............................................
> 06:56:44 p: 570/  19 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_flavors.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 06:56:45 p: 570/  18 b:   0    0
> U...............................................
> 06:56:46 p: 570/  18 b:   0  64k
> U...............................................
> 06:56:47 p: 570/   0 b:   0    0
> U...............................................
> 06:56:48 p: 570/   2 b:   0    0
> U...............................................
> 06:56:49 p: 570/   0 b:   0    0
> U...............................................
> 06:56:50 p: 570/   0 b:   0    0
> U...............................................
> 06:56:51 p: 570/   0 b:   0 1.3m
> U...............................................
> 06:56:52 p: 570/   0 b:   0    0
> U...............................................
> 06:56:53 p: 570/   2 b:   0    0
> U...............................................
> 06:56:54 p: 567/   0 b:   0    0
> U...............................................
> 06:56:55 p: 567/   0 b:   0    0
> U...............................................
> 06:56:56 p: 567/   0 b:   0 248k
> U...............................................
> 06:56:57 p: 567/   0 b:   0    0
> U...............................................
> 06:56:58 p: 567/   2 b:   0    0
> U...............................................
> 06:56:59 p: 567/   0 b:   0    0
> U...............................................
> 06:57:00 p: 570/   9 b:   0    0
> U...............................................
> In file included from progs/test_core_reloc_arrays.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 06:57:01 p: 570/  18 b:   0    0
> U...............................................
> 1 warning generated.
> In file included from progs/test_core_reloc_kernel.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 06:57:02 p: 570/  18 b:   0    0
> U...............................................
> 1 warning generated.
> 06:57:03 p: 568/  20 b:   0    0
> U...............................................
> 06:57:04 p: 567/  18 b:   0    0
> U...............................................
> 06:57:05 p: 569/  22 b:   0    0
> U...............................................
> 06:57:06 p: 569/  22 b:   0 316k
> U...............................................
> 06:57:07 p: 569/  18 b:   0    0
> U...............................................
> 06:57:08 p: 570/  12 b:   0    0
> U...............................................
> 06:57:09 p: 569/  17 b:   0    0
> U...............................................
> rsync -a ...
> 
> 
> 
> After: BPF compilation loads all CPUs, "kselftests install" loads ~5
> CPUs, 1.5 minutes:
> 
> ~/rpmbuild/BUILD/kernel-4.18.0-193.7.1.el8_2.test/linux-4.18.0-193.7.1.e
> l8.test.aarch64
> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' headers_install
> 21:38:54 p: 587/ 121 b:   0 648k
> U...............................................
> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' -s -j48 ARCH=arm64 V=1
> samples/bpf/
> 21:38:55 p: 585/ 244 b:   0    0
> U...............................................
> 21:38:56 p: 590/ 244 b:   0    0
> U...............................................
> 21:38:57 p: 591/ 242 b:   0    0
> U...............................................
> samples/bpf/Makefile:206: WARNING: Detected possible issues with include
> path.
> samples/bpf/Makefile:207: WARNING: Please install kernel headers locally
> (make headers_install).
> 21:38:58 p: 596/ 181 b:   0 8192
> U...............................................
> samples/bpf/../../tools/testing/selftests/bpf/cgroup_helpers.c:44:5:
> warning: no previous prototype for 'enable_all_controllers' [-Wmissing-
> prototypes]
>  int enable_all_controllers(char *cgroup_path)
>      ^~~~~~~~~~~~~~~~~~~~~~
> 21:38:59 p: 592/  74 b:   0 3.5m
> UU..............................................
> Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs
> from latest version at 'include/uapi/linux/bpf.h'
> Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h'
> differs from latest version at 'include/uapi/linux/if_link.h'
> 21:39:00 p: 592/ 127 b:   0 8192
> UUU.............................................
> 21:39:01 p: 748/ 208 b:   0 8192
> SUU.............................................
>   CLANG-bpf  samples/bpf/sockex1_kern.o
>   CLANG-bpf  samples/bpf/sockex2_kern.o
>   CLANG-bpf  samples/bpf/sockex3_kern.o
>   CLANG-bpf  samples/bpf/tracex1_kern.o
>   CLANG-bpf  samples/bpf/tracex2_kern.o
>   CLANG-bpf  samples/bpf/tracex3_kern.o
>   CLANG-bpf  samples/bpf/tracex4_kern.o
>   CLANG-bpf  samples/bpf/tracex6_kern.o
>   CLANG-bpf  samples/bpf/tracex7_kern.o
>   CLANG-bpf  samples/bpf/sock_flags_kern.o
>   CLANG-bpf  samples/bpf/test_probe_write_user_kern.o
>   CLANG-bpf  samples/bpf/trace_output_kern.o
>   CLANG-bpf  samples/bpf/tcbpf1_kern.o
>   CLANG-bpf  samples/bpf/tc_l2_redirect_kern.o
>   CLANG-bpf  samples/bpf/lathist_kern.o
>   CLANG-bpf  samples/bpf/offwaketime_kern.o
>   CLANG-bpf  samples/bpf/spintest_kern.o
>   CLANG-bpf  samples/bpf/map_perf_test_kern.o
>   CLANG-bpf  samples/bpf/test_overhead_tp_kern.o
>   CLANG-bpf  samples/bpf/test_overhead_raw_tp_kern.o
>   CLANG-bpf  samples/bpf/test_overhead_kprobe_kern.o
>   CLANG-bpf  samples/bpf/parse_varlen.o
>   CLANG-bpf  samples/bpf/parse_simple.o
>   CLANG-bpf  samples/bpf/parse_ldabs.o
>   CLANG-bpf  samples/bpf/test_cgrp2_tc_kern.o
>   CLANG-bpf  samples/bpf/xdp1_kern.o
>   CLANG-bpf  samples/bpf/xdp2_kern.o
>   CLANG-bpf  samples/bpf/xdp_router_ipv4_kern.o
>   CLANG-bpf  samples/bpf/test_current_task_under_cgroup_kern.o
>   CLANG-bpf  samples/bpf/trace_event_kern.o
>   CLANG-bpf  samples/bpf/sampleip_kern.o
>   CLANG-bpf  samples/bpf/lwt_len_hist_kern.o
>   CLANG-bpf  samples/bpf/xdp_tx_iptunnel_kern.o
>   CLANG-bpf  samples/bpf/tcp_synrto_kern.o
>   CLANG-bpf  samples/bpf/test_map_in_map_kern.o
>   CLANG-bpf  samples/bpf/tcp_rwnd_kern.o
>   CLANG-bpf  samples/bpf/tcp_bufs_kern.o
>   CLANG-bpf  samples/bpf/tcp_cong_kern.o
>   CLANG-bpf  samples/bpf/tcp_iw_kern.o
>   CLANG-bpf  samples/bpf/tcp_clamp_kern.o
>   CLANG-bpf  samples/bpf/tcp_basertt_kern.o
>   CLANG-bpf  samples/bpf/tcp_tos_reflect_kern.o
>   CLANG-bpf  samples/bpf/tcp_dumpstats_kern.o
>   CLANG-bpf  samples/bpf/xdp_redirect_kern.o
>   CLANG-bpf  samples/bpf/xdp_redirect_map_kern.o
>   CLANG-bpf  samples/bpf/xdp_redirect_cpu_kern.o
>   CLANG-bpf  samples/bpf/xdp_monitor_kern.o
>   CLANG-bpf  samples/bpf/xdp_rxq_info_kern.o
> 21:39:02 p: 775/ 399 b:   0    0
> SSSUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.
>   CLANG-bpf  samples/bpf/xdp2skb_meta_kern.o
>   CLANG-bpf  samples/bpf/syscall_tp_kern.o
>   CLANG-bpf  samples/bpf/cpustat_kern.o
>   CLANG-bpf  samples/bpf/xdp_adjust_tail_kern.o
>   CLANG-bpf  samples/bpf/xdp_fwd_kern.o
>   CLANG-bpf  samples/bpf/task_fd_query_kern.o
>   CLANG-bpf  samples/bpf/xdp_sample_pkts_kern.o
>   CLANG-bpf  samples/bpf/hbm_out_kern.o
>   CLANG-bpf  samples/bpf/hbm_edt_kern.o
> 21:39:03 p: 766/ 115 b:   0    0
> SSUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
>   CLANG-bpf  samples/bpf/tracex5_kern.o
> 21:39:04 p: 662/ 141 b:   0  65m
> SUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.................
> 21:39:05 p: 606/   2 b:   0    0
> UUUUUUUUUUUUUU..................................
> 21:39:06 p: 588/   0 b:   0    0
> UUU.............................................
> + pushd tools/testing/selftests
> ~/rpmbuild/BUILD/kernel-4.18.0-193.7.1.el8_2.test/linux-4.18.0-193.7.1.e
> l8.test.aarch64/tools/testing/selftests ~/rpmbuild/BUILD/kernel-4.18.0-1
> 93.7.1.el8_2.test/linux-4.18.0-193.7.1.el8.test.aarch64
> + make 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
> protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-
> tables -fstack-clash-protection' 'HOSTLDFLAGS=-Wl,-z,relro  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' -s -j48 ARCH=arm64 V=1
> 'TARGETS=bpf livepatch net' INSTALL_PATH=/root/rpmbuild/BUILDROOT/kernel
> -4.18.0-193.7.1.el8.test.aarch64/usr/libexec/kselftests install
> 21:39:07 p: 599/  97 b:   0    0
> U...............................................
> 21:39:08 p: 605/  89 b:   0    0
> UUUU............................................
> 
> Auto-detecting system features:
> ...                        libelf: [ on  ]
> ...                           bpf: [ on  ]
> 
> 21:39:09 p: 606/ 104 b:   0 4.7m
> SUUUU...........................................
> Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs
> from latest version at 'include/uapi/linux/bpf.h'
> Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h'
> differs from latest version at 'include/uapi/linux/if_link.h'
> 21:39:10 p: 610/ 172 b:   0 8192
> SUUUUUU.........................................
> 21:39:11 p: 614/  83 b:   0    0
> UUUUUU..........................................
> 21:39:12 p: 610/  45 b:   0    0
> UUUUU...........................................
> 21:39:13 p: 611/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_ints.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:14 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:39:15 p: 607/  47 b:   0    0
> UUUUU...........................................
> 21:39:16 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:39:17 p: 607/  48 b:   0 3.8m
> UUUU............................................
> 21:39:18 p: 612/  45 b:   0    0
> UUUUU...........................................
> 21:39:19 p: 608/  45 b:   0    0
> UUUUU...........................................
> 21:39:20 p: 608/  47 b:   0    0
> UUUU............................................
> 21:39:21 p: 608/  45 b:   0    0
> UUUU............................................
> 21:39:22 p: 608/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_nesting.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> In file included from progs/test_core_reloc_mods.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:23 p: 610/  45 b:   0    0
> UUUUU...........................................
> 21:39:24 p: 611/  45 b:   0    0
> UUUUU...........................................
> 21:39:25 p: 605/  47 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_ptr_as_arr.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:26 p: 602/  45 b:   0    0
> UUUUU...........................................
> 21:39:27 p: 598/  47 b:   0    0
> UUUUU...........................................
> 21:39:28 p: 604/  50 b:   0    0
> UUUU............................................
> In file included from progs/test_core_reloc_misc.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:29 p: 609/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_primitives.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 21:39:30 p: 609/  47 b:   0    0
> UUUUU...........................................
> 1 warning generated.
> 21:39:31 p: 619/  45 b:   0    0
> UUUUUU..........................................
> In file included from progs/test_core_reloc_existence.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 21:39:32 p: 618/  45 b:   0    0
> UUUUUUU.........................................
> 1 warning generated.
> In file included from progs/test_core_reloc_flavors.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:33 p: 610/  45 b:   0    0
> UUUUUUU.........................................
> 21:39:34 p: 615/  45 b:   0 216k
> UUUUUUU.........................................
> In file included from progs/test_core_reloc_arrays.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> In file included from progs/test_core_reloc_kernel.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:35 p: 611/  47 b:   0    0
> UUUUUUU.........................................
> 21:39:36 p: 608/  45 b:   0    0
> UUUUU...........................................
> 21:39:37 p: 612/  45 b:   0    0
> UUUUUU..........................................
> 21:39:38 p: 636/ 189 b:   0 2.6m
> SSUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.................
> 21:39:39 p: 611/  51 b:   0 4.3m
> SUUUUUUUUUUUUU..................................
> 21:39:40 p: 607/  25 b:   0 1.5m
> UUUUUUUU........................................
> 21:39:41 p: 600/  19 b:   0 1.7m
> UUUUUU..........................................
> 21:39:42 p: 597/  15 b:   0 1.2m
> UUUUU...........................................
> 21:39:43 p: 597/  15 b:   0 0.9m
> UUUUU...........................................
> 21:39:44 p: 597/  16 b:   0  16m
> UUUUU...........................................
> 21:39:45 p: 597/  18 b:   0 104m
> UUUUU...........................................
> 21:39:46 p: 593/  13 b:   0 1.2m
> UUUU............................................
> 21:39:47 p: 593/  15 b:   0 1.9m
> UUU.............................................
> 21:39:48 p: 591/  11 b:   0 0.9m
> UUU.............................................
> 21:39:49 p: 597/  41 b:   0 136k
> UU..............................................
> 21:39:50 p: 602/  49 b:   0 1.1m
> UUU.............................................
> 21:39:51 p: 602/  45 b:   0    0
> UUU.............................................
> 21:39:52 p: 612/  45 b:   0    0
> UUUU............................................
> 21:39:53 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:39:54 p: 612/  45 b:   0    0
> UUUUU...........................................
> 21:39:55 p: 610/  47 b:   0    0
> UUUUUU..........................................
> In file included from progs/test_core_reloc_ints.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:39:56 p: 610/  45 b:   0    0
> UUUUU...........................................
> 21:39:57 p: 609/  45 b:   0    0
> UUUUU...........................................
> 21:39:58 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:39:59 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:40:00 p: 607/  47 b:   0    0
> UUUUU...........................................
> 21:40:01 p: 606/  45 b:   0    0
> UUUU............................................
> 21:40:02 p: 609/  52 b:   0    0
> UUUU............................................
> 21:40:03 p: 611/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_nesting.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:04 p: 613/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_mods.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:05 p: 605/  47 b:   0    0
> UUUUU...........................................
> 21:40:06 p: 605/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_ptr_as_arr.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:07 p: 598/  45 b:   0    0
> UUUUU...........................................
> 21:40:08 p: 598/  45 b:   0    0
> UUUU............................................
> 21:40:09 p: 598/  45 b:   0    0
> UUUU............................................
> 21:40:10 p: 607/  47 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_misc.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:11 p: 603/  45 b:   0    0
> UUUUU...........................................
> In file included from progs/test_core_reloc_primitives.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:12 p: 607/  45 b:   0    0
> UUUUU...........................................
> 21:40:13 p: 612/  45 b:   0    0
> UUUUUUU.........................................
> In file included from progs/test_core_reloc_existence.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:14 p: 607/  45 b:   0    0
> UUUUUUU.........................................
> In file included from progs/test_core_reloc_flavors.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> 21:40:15 p: 609/  48 b:   0    0
> UUUUUUU.........................................
> In file included from progs/test_core_reloc_arrays.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 1 warning generated.
> In file included from progs/test_core_reloc_kernel.c:7:
> ../../../lib/bpf/bpf_core_read.h:26:2: warning: "LLVM does not support
> __builtin_preserve_field_info - CO-RE will not work!" [-W#warnings]
> #warning "LLVM does not support __builtin_preserve_field_info - CO-RE
> will not work!"
>  ^
> 21:40:16 p: 614/  46 b:   0    0
> UUUUUUU.........................................
> 1 warning generated.
> 21:40:17 p: 609/  46 b:   0 1.9m
> UUUUUU..........................................
> 21:40:18 p: 609/  45 b:   0    0
> UUUUU...........................................
> 21:40:19 p: 599/  23 b:   0    0
> UUUUU...........................................
> 21:40:20 p: 599/   2 b:   0  12m
> UUU.............................................
> 21:40:21 p: 599/   0 b:   0    0
> UUU.............................................
> 21:40:22 p: 596/   0 b:   0    0
> UUU.............................................
> 21:40:23 p: 593/   0 b:   0    0
> UUU.............................................
> 21:40:24 p: 593/   0 b:   0    0
> UUU.............................................
> 21:40:25 p: 593/   2 b:   0 608k
> UUU.............................................
> 21:40:26 p: 593/   0 b:   0    0
> UUU.............................................
> 21:40:27 p: 589/   0 b:   0    0
> UU..............................................
> 21:40:28 p: 589/   0 b:   0    0
> U...............................................
> rsync -a ...

Acked-by: Herton R. Krzesinski <herton@xxxxxxxxxx>

-- 
[]'s
Herton
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