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Groups > linux.kernel > #1277703
| From | Tejun Heo <tj@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] cpuset: Replace all instances of time_t with time64_t |
| Date | 2015-11-25 20:10 +0100 |
| Message-ID | <qyNC1-1Wc-7@gated-at.bofh.it> (permalink) |
| References | <qyK1r-7ZU-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Nov 25, 2015 at 04:16:55PM +0100, Arnd Bergmann wrote: > The following patch replaces all instances of time_t with time64_t i.e. > change the type used for representing time from 32-bit to 64-bit. All > 32-bit kernels to date use a signed 32-bit time_t type, which can only > represent time until January 2038. Since embedded systems running 32-bit > Linux are going to survive beyond that date, we have to change all > current uses, in a backwards compatible way. > > The patch also changes the function get_seconds() that returns a 32-bit > integer to ktime_get_seconds() that returns seconds as 64-bit integer. > > The patch changes the type of ticks from time_t to u32. We keep ticks as > 32-bits as the function uses 32-bit arithmetic which would prove less > expensive than 64-bit arithmetic and the function is expected to be > called atleast once every 32 seconds. > > Signed-off-by: Heena Sirwani <heenasirwani@gmail.com> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Arnd Bergmann <arnd@arndb.de> Applied to cgroup/for-4.5. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH] cpuset: Replace all instances of time_t with time64_t Arnd Bergmann <arnd@arndb.de> - 2015-11-25 16:20 +0100
Re: [PATCH] cpuset: Replace all instances of time_t with time64_t Thomas Gleixner <tglx@linutronix.de> - 2015-11-25 18:40 +0100
Re: [PATCH] cpuset: Replace all instances of time_t with time64_t Tejun Heo <tj@kernel.org> - 2015-11-25 20:10 +0100
Re: [PATCH] cpuset: Replace all instances of time_t with time64_t Zefan Li <lizefan@huawei.com> - 2015-11-26 13:20 +0100
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