The series is a preparation series for individual architectures to use 64 bit time_t syscalls in compat and 32 bit emulation modes. This is a follow up to the series Arnd Bergmann posted: https://sourceware.org/ml/libc-alpha/2015-05/msg00070.html Big picture is as per the lwn article: https://lwn.net/Articles/643234/ The series is directed at converting posix clock syscalls: clock_gettime, clock_settime, clock_getres and clock_nanosleep to use a new data structure __kernel_timespec at syscall boundaries. __kernel_timespec maintains 64 bit time_t across all execution modes. vdso will be handled as part of each architecture when they enable support for 64 bit time_t. The compat syscalls are repurposed to provide backward compatibility by using them as native syscalls as well for 32 bit architectures. They will continue to use timespec at syscall boundaries. CONFIG_64_BIT_TIME controls whether the syscalls use __kernel_timespec or timespec at syscall boundaries. The series does the following: 1. Enable compat syscalls unconditionally. 2. Add a new __kernel_timespec type to be used as the data structure for all the new syscalls. 3. Add new config CONFIG_64BIT_TIME(intead of the CONFIG_COMPAT_TIME in [1] and [2] to switch to new definition of __kernel_timespec. It is the same as struct timespec otherwise. Arnd Bergmann (1): y2038: introduce CONFIG_64BIT_TIME Deepa Dinamani (8): include: Move compat_timespec/ timeval to compat_time.h compat: Make compat helpers independent of CONFIG_COMPAT compat: enable compat_get/put_timespec64 always posix-clocks: Enable compat syscalls always include: Add new y2038 safe __kernel_timespec fix get_timespec64() for y2038 safe compat interfaces change time types to new y2038 safe __kernel_* types nanosleep: change time types to safe __kernel_* types arch/Kconfig | 11 ++++ arch/arm64/include/asm/compat.h | 11 ---- arch/arm64/include/asm/stat.h | 1 + arch/arm64/kernel/hw_breakpoint.c | 1 - arch/arm64/kernel/perf_regs.c | 2 +- arch/arm64/kernel/process.c | 1 - arch/mips/include/asm/compat.h | 11 ---- arch/mips/kernel/signal32.c | 2 +- arch/parisc/include/asm/compat.h | 11 ---- arch/powerpc/include/asm/compat.h | 11 ---- arch/powerpc/kernel/asm-offsets.c | 2 +- arch/powerpc/oprofile/backtrace.c | 2 +- arch/s390/hypfs/hypfs_sprp.c | 1 - arch/s390/include/asm/compat.h | 11 ---- arch/s390/include/asm/elf.h | 3 +- arch/s390/kvm/priv.c | 1 - arch/s390/pci/pci_clp.c | 1 - arch/sparc/include/asm/compat.h | 11 ---- arch/tile/include/asm/compat.h | 11 ---- arch/x86/events/core.c | 2 +- arch/x86/include/asm/compat.h | 11 ---- arch/x86/include/asm/ftrace.h | 2 +- arch/x86/include/asm/sys_ia32.h | 2 +- arch/x86/kernel/sys_x86_64.c | 2 +- drivers/s390/block/dasd_ioctl.c | 1 - drivers/s390/char/fs3270.c | 1 - drivers/s390/char/sclp_ctl.c | 1 - drivers/s390/char/vmcp.c | 1 - drivers/s390/cio/chsc_sch.c | 1 - drivers/s390/net/qeth_core_main.c | 2 +- drivers/staging/pi433/pi433_if.c | 2 +- include/linux/compat.h | 7 ++- include/linux/compat_time.h | 23 +++++++++ include/linux/restart_block.h | 7 +-- include/linux/syscalls.h | 12 ++--- include/linux/time.h | 4 +- include/linux/time64.h | 10 +++- include/uapi/asm-generic/posix_types.h | 1 + include/uapi/linux/time.h | 7 +++ kernel/Makefile | 2 +- kernel/compat.c | 92 ++++++++++++++++++---------------- kernel/time/hrtimer.c | 7 +-- kernel/time/posix-stubs.c | 12 ++--- kernel/time/posix-timers.c | 20 ++++---- kernel/time/time.c | 10 +++- 45 files changed, 152 insertions(+), 195 deletions(-) create mode 100644 include/linux/compat_time.h base-commit: d9e0e63d9a6f88440eb201e1491fcf730272c706 -- 2.11.0 Cc: acme@xxxxxxxxxx Cc: benh@xxxxxxxxxxxxxxxxxxx Cc: borntraeger@xxxxxxxxxx Cc: catalin.marinas@xxxxxxx Cc: cmetcalf@xxxxxxxxxxxx Cc: cohuck@xxxxxxxxxx Cc: davem@xxxxxxxxxxxxx Cc: deller@xxxxxx Cc: devel@xxxxxxxxxxxxxxxxxxxx Cc: gerald.schaefer@xxxxxxxxxx Cc: gregkh@xxxxxxxxxxxxxxxxxxx Cc: heiko.carstens@xxxxxxxxxx Cc: hoeppner@xxxxxxxxxxxxxxxxxx Cc: hpa@xxxxxxxxx Cc: jejb@xxxxxxxxxxxxxxxx Cc: jwi@xxxxxxxxxxxxxxxxxx Cc: linux-api@xxxxxxxxxxxxxxx Cc: linux-arch@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxx Cc: linux-parisc@xxxxxxxxxxxxxxx Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Cc: linux-s390@xxxxxxxxxxxxxxx Cc: mark.rutland@xxxxxxx Cc: mingo@xxxxxxxxxx Cc: mpe@xxxxxxxxxxxxxx Cc: oberpar@xxxxxxxxxxxxxxxxxx Cc: oprofile-list@xxxxxxxxxxxx Cc: paulus@xxxxxxxxx Cc: peterz@xxxxxxxxxxxxx Cc: ralf@xxxxxxxxxxxxxx Cc: rostedt@xxxxxxxxxxx Cc: rric@xxxxxxxxxx Cc: schwidefsky@xxxxxxxxxx Cc: sebott@xxxxxxxxxxxxxxxxxx Cc: sparclinux@xxxxxxxxxxxxxxx Cc: sth@xxxxxxxxxxxxxxxxxx Cc: ubraun@xxxxxxxxxxxxxxxxxx Cc: will.deacon@xxxxxxx Cc: x86@xxxxxxxxxx _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
