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[PATCH 0/4] Restartable Sequences support for glibc 2.30
- From: Mathieu Desnoyers <mathieu dot desnoyers at efficios dot com>
- To: Carlos O'Donell <carlos at redhat dot com>
- Cc: Florian Weimer <fweimer at redhat dot com>, Joseph Myers <joseph at codesourcery dot com>, Szabolcs Nagy <szabolcs dot nagy at arm dot com>, libc-alpha at sourceware dot org, Mathieu Desnoyers <mathieu dot desnoyers at efficios dot com>
- Date: Tue, 12 Feb 2019 14:42:49 -0500
- Subject: [PATCH 0/4] Restartable Sequences support for glibc 2.30
- Dkim-filter: OpenDKIM Filter v2.10.3 mail.efficios.com 33B141A1AE0
Hi,
This patchset implements basic support for the "rseq" Linux system call
in glibc by registering the rseq TLS abi.
One patch in this series modifies sched_getcpu() to speed up reading the
current CPU number by reading __rseq_abi.cpu_id when rseq is available.
The only point that still appears to not reach concensus is whether it's
acceptable to define the RSEQ_SIG code signature for each architecture.
If I missed other points that failed to reach concensus, please let me
know!
Please consider for inclusion into glibc,
Thanks,
Mathieu
Mathieu Desnoyers (4):
glibc: Perform rseq(2) registration at C startup and thread creation
(v7)
glibc: sched_getcpu(): use rseq cpu_id TLS on Linux
support record failure: allow use from constructor
rseq registration tests (v2)
NEWS | 11 +
csu/libc-start.c | 12 +-
misc/Makefile | 3 +-
misc/rseq-internal.h | 34 ++
nptl/pthread_create.c | 9 +
support/check.h | 4 +
support/support_record_failure.c | 18 +-
sysdeps/unix/sysv/linux/Makefile | 8 +-
sysdeps/unix/sysv/linux/Versions | 4 +
sysdeps/unix/sysv/linux/aarch64/bits/rseq.h | 24 ++
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/bits/rseq.h | 24 ++
sysdeps/unix/sysv/linux/arm/libc.abilist | 2 +
sysdeps/unix/sysv/linux/bits/rseq.h | 24 ++
sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
.../sysv/linux/m68k/coldfire/libc.abilist | 2 +
.../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
.../unix/sysv/linux/microblaze/libc.abilist | 2 +
sysdeps/unix/sysv/linux/mips/bits/rseq.h | 24 ++
.../sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
.../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
.../sysv/linux/mips/mips64/n32/libc.abilist | 2 +
.../sysv/linux/mips/mips64/n64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
sysdeps/unix/sysv/linux/powerpc/bits/rseq.h | 24 ++
.../linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
.../powerpc/powerpc32/nofpu/libc.abilist | 2 +
.../linux/powerpc/powerpc64/be/libc.abilist | 2 +
.../linux/powerpc/powerpc64/le/libc.abilist | 2 +
.../unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/rseq-internal.h | 91 +++++
sysdeps/unix/sysv/linux/rseq-sym.c | 54 +++
sysdeps/unix/sysv/linux/s390/bits/rseq.h | 24 ++
.../unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
.../unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sched_getcpu.c | 25 +-
sysdeps/unix/sysv/linux/sh/libc.abilist | 2 +
.../sysv/linux/sparc/sparc32/libc.abilist | 2 +
.../sysv/linux/sparc/sparc64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sys/rseq.h | 65 +++
sysdeps/unix/sysv/linux/tst-rseq-nptl.c | 381 ++++++++++++++++++
sysdeps/unix/sysv/linux/tst-rseq.c | 110 +++++
sysdeps/unix/sysv/linux/x86/bits/rseq.h | 24 ++
.../unix/sysv/linux/x86_64/64/libc.abilist | 2 +
.../unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
48 files changed, 1034 insertions(+), 15 deletions(-)
create mode 100644 misc/rseq-internal.h
create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/arm/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/mips/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/powerpc/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/rseq-internal.h
create mode 100644 sysdeps/unix/sysv/linux/rseq-sym.c
create mode 100644 sysdeps/unix/sysv/linux/s390/bits/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/sys/rseq.h
create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-nptl.c
create mode 100644 sysdeps/unix/sysv/linux/tst-rseq.c
create mode 100644 sysdeps/unix/sysv/linux/x86/bits/rseq.h
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2.17.1