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unknown user pushed a change to branch hjl/tunables/master in repository glibc.

discards 9506057c4b Add TUNABLES to control IFUNC selection and cache sizes discards 672d7f0576 x86: Don't use dl_x86_cpu_features in cacheinfo.c adds 6b69f98dcd benchtests: Add more tests for memrchr adds 8951dd0b14 Regenerate sysdeps/gnu/errlist.c. adds 7553131847 Fix struct sigaltstack namespace (bug 21517). adds c4c96f92f7 Define SIG_HOLD for XPG4 (bug 21538). adds d8a7d10324 x86-64: Update LO_HI_LONG for p{readv,writev}{64}v2 adds 7395928b95 x86_64: Remove redundant REX bytes from memrchr.S adds 30cb625a21 x86-64: Update strlen.S to support wcslen/wcsnlen adds 9cd30491dd x86: Add macros to implement ifunce selection in C adds ef9c4cb6c7 x86-64: Optimize wmemset with SSE2/AVX2/AVX512 adds 935971ba6b x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE adds 48e7bc7a55 x86: Don't use dl_x86_cpu_features in cacheinfo.c adds 12d2dd7060 Optimize generic spinlock code and use C11 like atomic macros. adds 4bf7abaeb3 S390: Use generic spinlock code. adds d4cc385c6e x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S adds 44330b6d32 tunables: Clean up hooks to get and set tunables adds ea9b0ecbf0 tunables: Add LD_HWCAP_MASK to tunables adds 6482e63403 Add include guards to dl-procinfo.h adds ff08fc59e3 tunables: Use glibc.tune.hwcap_mask tunable instead of _dl_h [...] adds f82e9672ad aarch64: Allow overriding HWCAP_CPUID feature check using HW [...] adds 511c5a1087 Make LD_HWCAP_MASK usable for static binaries adds ea01a4da21 aarch64: Add hwcap string routines adds fdc543919a Use test-driver in sysdeps/unix/sysv/linux/tst-clone2.c adds 8f0a947cf5 Remove check for NULL buffer passed to `ptsname_r' adds 2e87c7d158 x86-64: Fold ifunc-sse4_1.h into wcsnlen.c adds bd6193907a Fix tst-timezone race (bug 14096). adds 81df4d253d Fix include paths in include/bits/types/*.h. adds 82c19bdfe3 float128: Extend the power of ten tables adds 32bf1d09da float128: Add conversion from float128 to mpn adds aab0f374e7 Remove duplicated code from __printf_fp_l, __printf_fphex, a [...] adds 2bc646c9e9 Refactor PRINT_FPHEX_LONG_DOUBLE into a reusable macro adds cf2046ec7d float128: Add strfromf128 adds 5e1122827a x86-64: Rename wmemset.h to ifunc-wmemset.h adds 4615f5aefe Add more tests for memchr new 9f8e103a6c ld.so: Consolidate 2 strtouls into _dl_strtoul new e5c2103926 Add TUNABLES to control IFUNC selection and cache sizes

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Summary of changes: ChangeLog | 408 ++++++++++++++++++++ NEWS | 14 + README.tunables | 69 +++- benchtests/bench-memchr.c | 17 +- bits/signum.h | 2 +- bits/types/stack_t.h | 2 +- debug/segfault.c | 2 +- elf/Versions | 2 +- elf/dl-cache.c | 5 +- elf/dl-hwcaps.c | 11 +- .../aarch64/cpu-features.c => elf/dl-hwcaps.h | 31 +- elf/dl-minimal.c | 84 ---- elf/dl-misc.c | 84 ++++ elf/dl-support.c | 2 + elf/dl-tunables.c | 125 ++---- elf/dl-tunables.h | 53 ++- elf/dl-tunables.list | 5 + elf/rtld.c | 7 +- hurd/hurd/signal.h | 2 +- hurd/trampoline.c | 2 +- include/atomic.h | 16 +- include/bits/types/clock_t.h | 2 +- include/bits/types/clockid_t.h | 2 +- include/bits/types/struct_iovec.h | 2 +- include/bits/types/struct_itimerspec.h | 2 +- include/bits/types/struct_osockaddr.h | 2 +- include/bits/types/struct_sigstack.h | 2 +- include/bits/types/struct_timespec.h | 2 +- include/bits/types/struct_timeval.h | 2 +- include/bits/types/struct_tm.h | 2 +- include/bits/types/time_t.h | 2 +- include/bits/types/timer_t.h | 2 +- include/gmp.h | 8 + include/signal.h | 4 +- include/wchar.h | 3 + login/tst-ptsname.c | 1 - malloc/arena.c | 36 +- manual/tunables.texi | 23 ++ nptl/pthread_spin_init.c | 3 +- nptl/pthread_spin_lock.c | 71 ++-- nptl/pthread_spin_trylock.c | 54 ++- nptl/pthread_spin_unlock.c | 6 +- scripts/gen-tunables.awk | 1 + signal/sigaltstack.c | 2 +- signal/signal.h | 4 +- stdio-common/printf-parsemb.c | 1 + stdio-common/printf.h | 4 +- stdio-common/printf_fp.c | 192 +++++----- stdio-common/printf_fphex.c | 131 +++---- stdio-common/printf_size.c | 83 ++-- stdio-common/vfprintf.c | 10 +- stdlib/fpioconst.c | 8 +- stdlib/fpioconst.h | 18 +- stdlib/gmp-impl.h | 3 +- stdlib/stdlib.h | 9 + stdlib/strfrom-skeleton.c | 6 + string/test-memrchr.c | 17 + sysdeps/aarch64/atomic-machine.h | 1 + sysdeps/aarch64/nptl/pthread_spin_lock.c | 24 -- sysdeps/alpha/atomic-machine.h | 3 + sysdeps/arm/atomic-machine.h | 1 + sysdeps/arm/nptl/pthread_spin_lock.c | 23 -- sysdeps/generic/ldsodefs.h | 6 + sysdeps/gnu/errlist.c | 82 ++-- sysdeps/hppa/nptl/pthread_spin_lock.c | 23 -- sysdeps/i386/atomic-machine.h | 1 + sysdeps/ia64/atomic-machine.h | 3 + sysdeps/ieee754/float128/Makefile | 3 + sysdeps/ieee754/float128/Versions | 5 + .../float128/float1282mpn.c} | 7 +- sysdeps/ieee754/float128/float128_private.h | 2 + .../float128/strfromf128.c} | 14 +- sysdeps/ieee754/ldbl-128/ldbl2mpn.c | 3 +- sysdeps/ieee754/ldbl-128/printf_fphex.c | 88 +---- .../{printf_fphex.c => printf_fphex_macros.h} | 23 +- sysdeps/m68k/coldfire/atomic-machine.h | 3 + sysdeps/m68k/m680x0/m68020/atomic-machine.h | 3 + sysdeps/m68k/nptl/pthread_spin_lock.c | 24 -- sysdeps/mach/hurd/i386/signal-defines.sym | 6 +- sysdeps/mach/hurd/sigaltstack.c | 6 +- sysdeps/mach/hurd/sigstack.c | 2 +- sysdeps/microblaze/atomic-machine.h | 3 + sysdeps/microblaze/nptl/pthread_spin_lock.c | 24 -- sysdeps/mips/atomic-machine.h | 13 +- sysdeps/mips/nptl/pthread_spin_lock.c | 23 -- sysdeps/nios2/nptl/pthread_spin_lock.c | 24 -- sysdeps/powerpc/powerpc32/atomic-machine.h | 1 + sysdeps/powerpc/powerpc64/atomic-machine.h | 1 + sysdeps/s390/atomic-machine.h | 2 + sysdeps/s390/nptl/pthread_spin_lock.c | 32 -- sysdeps/s390/nptl/pthread_spin_trylock.c | 32 -- sysdeps/s390/nptl/pthread_spin_unlock.c | 32 -- sysdeps/sparc/sparc32/atomic-machine.h | 3 + sysdeps/sparc/sparc32/dl-machine.h | 6 +- sysdeps/sparc/sparc32/sparcv9/atomic-machine.h | 3 + sysdeps/sparc/sparc64/atomic-machine.h | 3 + sysdeps/tile/tilegx/atomic-machine.h | 1 + sysdeps/tile/tilepro/atomic-machine.h | 1 + sysdeps/unix/bsd/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/aarch64/cpu-features.c | 10 +- sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c | 15 + sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h | 86 +++++ sysdeps/unix/sysv/linux/alpha/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/alpha/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/bits/types/stack_t.h | 2 +- sysdeps/unix/sysv/linux/dl-librecon.h | 2 +- sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c | 2 +- sysdeps/unix/sysv/linux/hppa/atomic-machine.h | 3 + sysdeps/unix/sysv/linux/hppa/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/i386/dl-procinfo.h | 3 + sysdeps/unix/sysv/linux/ia64/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/m68k/____longjmp_chk.c | 2 +- .../unix/sysv/linux/m68k/coldfire/atomic-machine.h | 3 + sysdeps/unix/sysv/linux/mips/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h | 2 +- sysdeps/unix/sysv/linux/nios2/atomic-machine.h | 3 + sysdeps/unix/sysv/linux/powerpc/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/ptsname.c | 6 - sysdeps/unix/sysv/linux/s390/dl-procinfo.h | 3 + sysdeps/unix/sysv/linux/sh/atomic-machine.h | 3 + sysdeps/unix/sysv/linux/sh/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/sparc/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/tst-clone2.c | 7 +- sysdeps/unix/sysv/linux/x86_64/sysdep.h | 2 +- sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h | 4 + sysdeps/x86/cacheinfo.c | 55 +-- sysdeps/x86/cpu-features.c | 28 +- sysdeps/x86/cpu-features.h | 9 + sysdeps/x86/cpu-tunables.c | 6 +- sysdeps/x86/init-arch.h | 40 ++ sysdeps/x86_64/atomic-machine.h | 1 + sysdeps/x86_64/memrchr.S | 36 +- sysdeps/x86_64/memset.S | 18 +- sysdeps/x86_64/multiarch/Makefile | 10 +- sysdeps/x86_64/multiarch/ifunc-impl-list.c | 37 ++ sysdeps/x86_64/multiarch/ifunc-wmemset.h | 42 ++ sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S | 425 +++++++++++++++++++++ sysdeps/x86_64/multiarch/memcmp.S | 13 +- .../x86_64/multiarch/memset-avx2-unaligned-erms.S | 8 +- .../multiarch/memset-avx512-unaligned-erms.S | 9 +- .../x86_64/multiarch/memset-vec-unaligned-erms.S | 24 +- sysdeps/x86_64/multiarch/memset.S | 13 +- sysdeps/x86_64/multiarch/wcsnlen-c.c | 9 + sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S | 5 + sysdeps/x86_64/multiarch/{wmemcmp.S => wcsnlen.c} | 49 +-- sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe.S | 4 + sysdeps/x86_64/multiarch/wmemcmp.S | 13 +- sysdeps/x86_64/multiarch/{wmemcmp.S => wmemset.c} | 33 +- .../multiarch/wmemset_chk-nonshared.S} | 8 +- .../multiarch/wmemset_chk.c} | 32 +- sysdeps/x86_64/strlen.S | 61 ++- sysdeps/x86_64/{bzero.S => wmemset.S} | 0 .../stack_t.h => sysdeps/x86_64/wmemset_chk.S | 30 +- timezone/Makefile | 1 + 156 files changed, 2260 insertions(+), 1162 deletions(-) copy sysdeps/unix/sysv/linux/aarch64/cpu-features.c => elf/dl-hwcaps.h (66%) delete mode 100644 sysdeps/aarch64/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/arm/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/hppa/nptl/pthread_spin_lock.c create mode 100644 sysdeps/ieee754/float128/Makefile copy sysdeps/{s390/nptl/pthread_spin_init.c => ieee754/float128/float1282mpn.c} (78%) copy sysdeps/{s390/nptl/pthread_spin_init.c => ieee754/float128/strfromf128.c} (71%) copy sysdeps/ieee754/ldbl-128/{printf_fphex.c => printf_fphex_macros.h} (85%) delete mode 100644 sysdeps/m68k/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/microblaze/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/mips/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/nios2/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/s390/nptl/pthread_spin_lock.c delete mode 100644 sysdeps/s390/nptl/pthread_spin_trylock.c delete mode 100644 sysdeps/s390/nptl/pthread_spin_unlock.c create mode 100644 sysdeps/unix/sysv/linux/aarch64/dl-procinfo.h create mode 100644 sysdeps/x86_64/multiarch/ifunc-wmemset.h create mode 100644 sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S create mode 100644 sysdeps/x86_64/multiarch/wcsnlen-c.c create mode 100644 sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S copy sysdeps/x86_64/multiarch/{wmemcmp.S => wcsnlen.c} (56%) create mode 100644 sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe.S copy sysdeps/x86_64/multiarch/{wmemcmp.S => wmemset.c} (65%) rename sysdeps/{s390/nptl/pthread_spin_init.c => x86_64/multiarch/wmemset_chk-nons [...] copy sysdeps/{unix/sysv/linux/aarch64/cpu-features.c => x86_64/multiarch/wmemset_c [...] copy sysdeps/x86_64/{bzero.S => wmemset.S} (100%) copy bits/types/stack_t.h => sysdeps/x86_64/wmemset_chk.S (63%)