From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: "Bill Wendling" <morbo@google.com>, "Yonghong Song" <yhs@fb.com>,
dwarves@vger.kernel.org, "Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>, bpf <bpf@vger.kernel.org>,
"David Blaikie" <dblaikie@gmail.com>,
"Fāng-ruì Sòng" <maskray@google.com>,
kernel-team@fb.com, "Nick Desaulniers" <ndesaulniers@google.com>
Subject: Re: [PATCH dwarves 0/2] dwarf_loader: improve cus__merging_cu()
Date: Tue, 6 Apr 2021 13:55:54 -0300 [thread overview]
Message-ID: <YGySmmmn4J43I0EG@kernel.org> (raw)
In-Reply-To: <YGyO9KzDoxu5zk33@kernel.org>
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
next prev parent reply other threads:[~2021-04-06 16:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 2:58 [PATCH dwarves 0/2] dwarf_loader: improve cus__merging_cu() Yonghong Song
2021-04-01 2:58 ` [PATCH dwarves 1/2] dwarf_loader: check .debug_abbrev for cross-cu references Yonghong Song
2021-04-01 18:52 ` Nick Desaulniers
2021-04-01 19:36 ` Arnaldo
2021-04-01 20:54 ` Yonghong Song
2021-04-01 2:58 ` [PATCH dwarves 2/2] dwarf_loader: check .notes section for lto build info Yonghong Song
2021-04-01 12:59 ` [PATCH dwarves 0/2] dwarf_loader: improve cus__merging_cu() Arnaldo Carvalho de Melo
2021-04-01 18:50 ` Nick Desaulniers
2021-04-01 19:35 ` Bill Wendling
2021-04-01 20:56 ` Bill Wendling
2021-04-01 21:59 ` Yonghong Song
2021-04-02 19:44 ` Bill Wendling
2021-04-06 13:22 ` Arnaldo Carvalho de Melo
2021-04-06 13:23 ` Arnaldo Carvalho de Melo
2021-04-06 16:40 ` Arnaldo Carvalho de Melo
2021-04-06 16:55 ` Arnaldo Carvalho de Melo [this message]
2021-04-06 16:59 ` Arnaldo Carvalho de Melo
2021-04-06 17:03 ` Arnaldo Carvalho de Melo
2021-04-06 17:07 ` Arnaldo Carvalho de Melo
2021-04-06 17:25 ` Arnaldo Carvalho de Melo
2021-04-06 17:23 ` Yonghong Song
2021-04-06 17:34 ` Arnaldo Carvalho de Melo
2021-04-06 17:36 ` Arnaldo Carvalho de Melo
2021-04-06 17:48 ` Yonghong Song
2021-04-06 18:03 ` Arnaldo Carvalho de Melo
2021-04-06 18:04 ` Arnaldo Carvalho de Melo
2021-04-06 18:31 ` Nick Desaulniers
2021-04-06 18:17 ` David Blaikie
2021-04-06 18:20 ` Arnaldo Carvalho de Melo
2021-04-06 18:22 ` Fāng-ruì Sòng
2021-04-06 17:09 ` Jiri Olsa
2021-04-02 13:27 ` Arnaldo Carvalho de Melo
2021-04-02 14:34 ` Yonghong Song
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