linux/arch
Thomas Gleixner 41ea39101d y2038: Add time64 system calls
This series finally gets us to the point of having system calls with
 64-bit time_t on all architectures, after a long time of incremental
 preparation patches.
 
 There was actually one conversion that I missed during the summer,
 i.e. Deepa's timex series, which I now updated based the 5.0-rc1 changes
 and review comments.
 
 The following system calls are now added on all 32-bit architectures
 using the same system call numbers:
 
 403 clock_gettime64
 404 clock_settime64
 405 clock_adjtime64
 406 clock_getres_time64
 407 clock_nanosleep_time64
 408 timer_gettime64
 409 timer_settime64
 410 timerfd_gettime64
 411 timerfd_settime64
 412 utimensat_time64
 413 pselect6_time64
 414 ppoll_time64
 416 io_pgetevents_time64
 417 recvmmsg_time64
 418 mq_timedsend_time64
 419 mq_timedreceiv_time64
 420 semtimedop_time64
 421 rt_sigtimedwait_time64
 422 futex_time64
 423 sched_rr_get_interval_time64
 
 Each one of these corresponds directly to an existing system call
 that includes a 'struct timespec' argument, or a structure containing
 a timespec or (in case of clock_adjtime) timeval. Not included here
 are new versions of getitimer/setitimer and getrusage/waitid, which
 are planned for the future but only needed to make a consistent API
 rather than for correct operation beyond y2038. These four system
 calls are based on 'timeval', and it has not been finally decided
 what the replacement kernel interface will use instead.
 
 So far, I have done a lot of build testing across most architectures,
 which has found a number of bugs. Runtime testing so far included
 testing LTP on 32-bit ARM with the existing system calls, to ensure
 we do not regress for existing binaries, and a test with a 32-bit
 x86 build of LTP against a modified version of the musl C library
 that has been adapted to the new system call interface [3].
 This library can be used for testing on all architectures supported
 by musl-1.1.21, but it is not how the support is getting integrated
 into the official musl release. Official musl support is planned
 but will require more invasive changes to the library.
 
 Link: https://lore.kernel.org/lkml/20190110162435.309262-1-arnd@arndb.de/T/
 Link: https://lore.kernel.org/lkml/20190118161835.2259170-1-arnd@arndb.de/
 Link: https://git.linaro.org/people/arnd/musl-y2038.git/ [2]
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'y2038-new-syscalls' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground into timers/2038

Pull y2038 - time64 system calls from Arnd Bergmann:

This series finally gets us to the point of having system calls with 64-bit
time_t on all architectures, after a long time of incremental preparation
patches.

There was actually one conversion that I missed during the summer,
i.e. Deepa's timex series, which I now updated based the 5.0-rc1 changes
and review comments.

The following system calls are now added on all 32-bit architectures using
the same system call numbers:

403 clock_gettime64
404 clock_settime64
405 clock_adjtime64
406 clock_getres_time64
407 clock_nanosleep_time64
408 timer_gettime64
409 timer_settime64
410 timerfd_gettime64
411 timerfd_settime64
412 utimensat_time64
413 pselect6_time64
414 ppoll_time64
416 io_pgetevents_time64
417 recvmmsg_time64
418 mq_timedsend_time64
419 mq_timedreceiv_time64
420 semtimedop_time64
421 rt_sigtimedwait_time64
422 futex_time64
423 sched_rr_get_interval_time64

Each one of these corresponds directly to an existing system call that
includes a 'struct timespec' argument, or a structure containing a timespec
or (in case of clock_adjtime) timeval. Not included here are new versions
of getitimer/setitimer and getrusage/waitid, which are planned for the
future but only needed to make a consistent API rather than for correct
operation beyond y2038. These four system calls are based on 'timeval', and
it has not been finally decided what the replacement kernel interface will
use instead.

So far, I have done a lot of build testing across most architectures, which
has found a number of bugs. Runtime testing so far included testing LTP on
32-bit ARM with the existing system calls, to ensure we do not regress for
existing binaries, and a test with a 32-bit x86 build of LTP against a
modified version of the musl C library that has been adapted to the new
system call interface [3].  This library can be used for testing on all
architectures supported by musl-1.1.21, but it is not how the support is
getting integrated into the official musl release. Official musl support is
planned but will require more invasive changes to the library.

Link: https://lore.kernel.org/lkml/20190110162435.309262-1-arnd@arndb.de/T/
Link: https://lore.kernel.org/lkml/20190118161835.2259170-1-arnd@arndb.de/
Link: https://git.linaro.org/people/arnd/musl-y2038.git/ [2]
2019-02-10 21:24:43 +01:00
..
alpha y2038: add 64-bit time_t syscalls to all 32-bit architectures 2019-02-07 00:13:28 +01:00
arc ARCv2: lib: memeset: fix doing prefetchw outside of buffer 2019-01-17 16:24:39 -08:00
arm y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
arm64 y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
c6x arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
csky csky: fixup compile error with CPU 810. 2019-01-10 04:37:37 -08:00
h8300 arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
hexagon arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
ia64 y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
m68k y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
microblaze y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
mips y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
nds32 nds32: remove unneeded code in arch/nds32/Makefile 2019-01-17 23:42:37 +09:00
nios2 arch: remove redundant UAPI generic-y defines 2019-01-06 10:22:15 +09:00
openrisc arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
parisc y2038: add 64-bit time_t syscalls to all 32-bit architectures 2019-02-07 00:13:28 +01:00
powerpc y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
riscv riscv: Adjust mmap base address at a third of task size 2019-01-25 10:50:53 -08:00
s390 y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
sh y2038: add 64-bit time_t syscalls to all 32-bit architectures 2019-02-07 00:13:28 +01:00
sparc y2038: add 64-bit time_t syscalls to all 32-bit architectures 2019-02-07 00:13:28 +01:00
um Merge branch 'akpm' (patches from Andrew) 2019-01-05 09:16:18 -08:00
unicore32 arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
x86 y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
xtensa y2038: Add time64 system calls 2019-02-10 21:24:43 +01:00
.gitignore
Kconfig y2038: use time32 syscall names on 32-bit 2019-02-07 00:13:28 +01:00