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authorArnd Bergmann <arnd@arndb.de>2018-04-27 15:40:12 +0200
committerThomas Gleixner <tglx@linutronix.de>2018-05-19 13:57:31 +0200
commit4f0fad9a603aee91a374e8411c23953894a77479 (patch)
tree3a8bd6e90446982588cc533ef31fddc56dd98133 /kernel/time
parentb563ea676a46f3a297b1e64b6ece25b934aafba5 (diff)
timekeeping: Remove timespec64 hack
At this point, we have converted most of the kernel to use timespec64 consistently in place of timespec, so it seems it's time to make timespec64 the native structure and define timespec in terms of that one on 64-bit architectures. Starting with gcc-5, the compiler can completely optimize away the timespec_to_timespec64 and timespec64_to_timespec functions on 64-bit architectures. With older compilers, we introduce a couple of extra copies of local variables, but those are easily avoided by using the timespec64 based interfaces consistently, as we do in most of the important code paths already. The main upside of removing the hack is that printing the tv_sec field of a timespec64 structure can now use the %lld format string on all architectures without a cast to time64_t. Without this patch, the field is a 'long' type and would have to be printed using %ld on 64-bit architectures. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Boyd <sboyd@kernel.org> Cc: y2038@lists.linaro.org Cc: John Stultz <john.stultz@linaro.org> Link: https://lkml.kernel.org/r/20180427134016.2525989-2-arnd@arndb.de
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/time.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/time/time.c b/kernel/time/time.c
index ccd751e95fcb..6fa99213fc72 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -407,7 +407,6 @@ time64_t mktime64(const unsigned int year0, const unsigned int mon0,
}
EXPORT_SYMBOL(mktime64);
-#if __BITS_PER_LONG == 32
/**
* set_normalized_timespec - set timespec sec and nsec parts and normalize
*
@@ -468,7 +467,6 @@ struct timespec ns_to_timespec(const s64 nsec)
return ts;
}
EXPORT_SYMBOL(ns_to_timespec);
-#endif
/**
* ns_to_timeval - Convert nanoseconds to timeval