Em Tue, Apr 06, 2021 at 01:40:20PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Tue, Apr 06, 2021 at 10:22:37AM -0300, Arnaldo Carvalho de Melo escreveu: > > I'm seeing these here: > > [acme@five bpf]$ rm -f ../build/bpf_clang_thin_lto/*vmlinu* > > [acme@five bpf]$ time make -j28 LLVM=1 LLVM_IAS=1 O=../build/bpf_clang_thin_lto/ vmlinux > > make[1]: Entering directory '/home/acme/git/build/bpf_clang_thin_lto' > > GEN Makefile > > DESCEND objtool > > DESCEND bpf/resolve_btfids > > CALL /home/acme/git/bpf/scripts/atomic/check-atomics.sh > > CALL /home/acme/git/bpf/scripts/checksyscalls.sh > > CHK include/generated/compile.h > > GEN .version > > CHK include/generated/compile.h > > UPD include/generated/compile.h > > CC init/version.o > > AR init/built-in.a > > GEN .tmp_initcalls.lds > > LTO vmlinux.o > > OBJTOOL vmlinux.o > > vmlinux.o: warning: objtool: aesni_gcm_init_avx_gen2()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_enc_update_avx_gen2()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_dec_update_avx_gen2()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_finalize_avx_gen2()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_init_avx_gen4()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_enc_update_avx_gen4()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_dec_update_avx_gen4()+0x12: unsupported stack pointer realignment > > vmlinux.o: warning: objtool: aesni_gcm_finalize_avx_gen4()+0x12: unsupported stack pointer realignment > > MODPOST vmlinux.symvers > > MODINFO modules.builtin.modinfo > > GEN modules.builtin > > LD .tmp_vmlinux.btf > > BTF .btf.vmlinux.bin.o > > LD .tmp_vmlinux.kallsyms1 > > KSYMS .tmp_vmlinux.kallsyms1.S > > AS .tmp_vmlinux.kallsyms1.S > > LD .tmp_vmlinux.kallsyms2 > > KSYMS .tmp_vmlinux.kallsyms2.S > > AS .tmp_vmlinux.kallsyms2.S > > LD vmlinux > > BTFIDS vmlinux > > WARN: multiple IDs found for 'inode': 232, 28822 - using 232 > > WARN: multiple IDs found for 'file': 374, 28855 - using 374 > > WARN: multiple IDs found for 'path': 379, 28856 - using 379 > > WARN: multiple IDs found for 'vm_area_struct': 177, 28929 - using 177 > > WARN: multiple IDs found for 'task_struct': 97, 28966 - using 97 > > WARN: multiple IDs found for 'seq_file': 510, 29059 - using 510 > > WARN: multiple IDs found for 'inode': 232, 29345 - using 232 > > WARN: multiple IDs found for 'file': 374, 29429 - using 374 > > WARN: multiple IDs found for 'path': 379, 29430 - using 379 > > WARN: multiple IDs found for 'vm_area_struct': 177, 29471 - using 177 > > WARN: multiple IDs found for 'task_struct': 97, 29481 - using 97 > > WARN: multiple IDs found for 'seq_file': 510, 29512 - using 510 > > SORTTAB vmlinux > > SYSMAP System.map > > make[1]: Leaving directory '/home/acme/git/build/bpf_clang_thin_lto' > > > > [acme@five pahole]$ clang -v > > clang version 11.0.0 (Fedora 11.0.0-2.fc33) > > Target: x86_64-unknown-linux-gnu > > Thread model: posix > > InstalledDir: /usr/bin > > Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-redhat-linux/10 > > Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/10 > > Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/10 > > Candidate multilib: .;@m64 > > Candidate multilib: 32;@m32 > > Selected multilib: .;@m64 > > [acme@five pahole]$ > > > > [acme@five bpf]$ git log --oneline -10 > > 49b9da70941c3c8a (HEAD -> bpf_perf_enable) kbuild: add an elfnote with type BUILD_COMPILER_LTO_INFO > > 5c4f082a143c786e kbuild: move LINUX_ELFNOTE_BUILD_SALT to elfnote.h > > 42c8b565decb3662 bpf: Introduce helpers to enable/disable perf event fds in a map > > f73ea1eb4cce6637 (bpf-next/master, bpf-next/for-next) bpf: selftests: Specify CONFIG_DYNAMIC_FTRACE in the testing config > > f07669df4c8df0b7 libbpf: Remove redundant semi-colon > > 6ac4c6f887f5a8ef bpf: Remove repeated struct btf_type declaration > > 2daae89666ad2532 bpf, cgroup: Delete repeated struct bpf_prog declaration > > 2ec9898e9c70b93a bpf: Remove unused parameter from ___bpf_prog_run > > 007bdc12d4b46656 bpf, selftests: test_maps generating unrecognized data section > > 82506665179209e4 tcp: reorder tcp_congestion_ops for better cache locality > > [acme@five bpf]$ > > > > I'll try after a 'make mrproper' > > Same thing, trying now with gcc. With gcc no such messages: CC [M] drivers/gpu/drm/nouveau/nv84_fence.o CC [M] drivers/gpu/drm/nouveau/nvc0_fence.o LD [M] drivers/gpu/drm/nouveau/nouveau.o AR drivers/gpu/built-in.a AR drivers/built-in.a GEN .version CHK include/generated/compile.h LD vmlinux.o MODPOST vmlinux.symvers MODINFO modules.builtin.modinfo GEN modules.builtin LD .tmp_vmlinux.btf BTF .btf.vmlinux.bin.o LD .tmp_vmlinux.kallsyms1 KSYMS .tmp_vmlinux.kallsyms1.S AS .tmp_vmlinux.kallsyms1.S LD .tmp_vmlinux.kallsyms2 KSYMS .tmp_vmlinux.kallsyms2.S AS .tmp_vmlinux.kallsyms2.S LD vmlinux BTFIDS vmlinux SORTTAB vmlinux SYSMAP System.map HOSTCC arch/x86/tools/insn_decoder_test HOSTCC arch/x86/tools/insn_sanity MODPOST Module.symvers TEST posttest CC [M] arch/x86/crypto/aegis128-aesni.mod.o CC [M] arch/x86/crypto/blake2s-x86_64.mod.o Now will try with clang non-LTO. - Arnaldo
