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| author | John Stultz <john.stultz@linaro.org> | 2014-07-16 21:03:53 +0000 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2014-07-23 10:16:50 -0700 |
| commit | 24e4a8c3e8868874835b0f1ad6dd417341e99822 (patch) | |
| tree | d71c666cc53db7e0d906e838f23ff67855b86b6b /arch/s390 | |
| parent | 76f4108892d9a9e3408bba839914f97a54086a6f (diff) | |
| download | linux-stable-24e4a8c3e8868874835b0f1ad6dd417341e99822.tar.gz linux-stable-24e4a8c3e8868874835b0f1ad6dd417341e99822.tar.bz2 linux-stable-24e4a8c3e8868874835b0f1ad6dd417341e99822.zip | |
ktime: Kill non-scalar ktime_t implementation for 2038
The non-scalar ktime_t implementation is basically a timespec
which has to be changed to support dates past 2038 on 32bit
systems.
This patch removes the non-scalar ktime_t implementation, forcing
the scalar s64 nanosecond version on all architectures.
This may have additional performance overhead on some 32bit
systems when converting between ktime_t and timespec structures,
however the majority of 32bit systems (arm and i386) were already
using scalar ktime_t, so no performance regressions will be seen
on those platforms.
On affected platforms, I'm open to finding optimizations, including
avoiding converting to timespecs where possible.
[ tglx: We can now cleanup the ktime_t.tv64 mess, but thats a
different issue and we can throw a coccinelle script at it ]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index bb63499fc5d3..1afc7a686702 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -137,7 +137,6 @@ config S390 select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 if 32BIT select HAVE_VIRT_CPU_ACCOUNTING - select KTIME_SCALAR if 32BIT select MODULES_USE_ELF_RELA select NO_BOOTMEM select OLD_SIGACTION |