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2020-02-21y2038: remove unused time32 interfacesArnd Bergmann1-32/+0
No users remain, so kill these off before we grow new ones. Link: http://lkml.kernel.org/r/20200110154232.4104492-3-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-18timekeeping: remove obsolete time accessorsArnd Bergmann1-9/+0
There are no more remaining users of these deprecated wrappers, so let's remove them before new users have a chance to make it in. See Documentation/core-api/timekeeping.rst for replacements when porting old drivers that contain calls to this function. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Stultz <john.stultz@linaro.org>
2018-12-18timekeeping: remove unused {read,update}_persistent_clockArnd Bergmann1-6/+0
After arch/sh has removed the last reference to these functions, we can remove them completely and just rely on the 64-bit time_t based versions. This cleans up a rather ugly use of __weak functions. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Stultz <john.stultz@linaro.org>
2018-08-27y2038: make do_gettimeofday() and get_seconds() inlineArnd Bergmann1-2/+13
get_seconds() and do_gettimeofday() are only used by a few modules now any more (waiting for the respective patches to get accepted), and they are among the last holdouts of code that is not y2038 safe in the core kernel. Move the implementation into the timekeeping32.h header to clean up the core kernel and isolate the old interfaces further. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-08-27y2038: remove unused time interfacesArnd Bergmann1-50/+0
After many small patches, at least some of the deprecated interfaces have no remaining users any more and can be removed: current_kernel_time do_settimeofday get_monotonic_boottime get_monotonic_boottime64 get_monotonic_coarse get_monotonic_coarse64 getrawmonotonic64 ktime_get_real_ts timekeeping_clocktai timespec_trunc timespec_valid_strict time_to_tm For many of the remaining time functions, we are missing one or two patches that failed to make it into 4.19, they will be removed in the following merge window. The replacement functions for the removed interfaces are documented in Documentation/core-api/timekeeping.rst. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-05-19timekeeping: Standardize on ktime_get_*() namingArnd Bergmann1-4/+10
The current_kernel_time64, get_monotonic_coarse64, getrawmonotonic64, get_monotonic_boottime64 and timekeeping_clocktai64 interfaces have rather inconsistent naming, and they differ in the calling conventions by passing the output either by reference or as a return value. Rename them to ktime_get_coarse_real_ts64, ktime_get_coarse_ts64, ktime_get_raw_ts64, ktime_get_boottime_ts64 and ktime_get_clocktai_ts64 respectively, and provide the interfaces with macros or inline functions as needed. 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/20180427134016.2525989-4-arnd@arndb.de
2018-05-19timekeeping: Clean up ktime_get_real_ts64Arnd Bergmann1-11/+2
In a move to make ktime_get_*() the preferred driver interface into the timekeeping code, sanitizes ktime_get_real_ts64() to be a proper exported symbol rather than an alias for getnstimeofday64(). The internal __getnstimeofday64() is no longer used, so remove that and merge it into ktime_get_real_ts64(). 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/20180427134016.2525989-3-arnd@arndb.de
2018-05-19timekeeping: Remove timespec64 hackArnd Bergmann1-45/+0
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
2018-04-17timekeeping: Remove __current_kernel_time()Baolin Wang1-3/+0
The __current_kernel_time() function based on 'struct timespec' is no longer recommended for new code, and the only user of this function has been replaced by commit 6909e29fdefb ("kdb: use __ktime_get_real_seconds instead of __current_kernel_time"). Remove the obsolete interface. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: arnd@arndb.de Cc: sboyd@kernel.org Cc: broonie@kernel.org Cc: john.stultz@linaro.org Link: https://lkml.kernel.org/r/1a9dbea7ee2cda7efe9ed330874075cf17fdbff6.1523596316.git.baolin.wang@linaro.org
2017-10-31time: Move old timekeeping interfaces to timekeeping32.hArnd Bergmann1-0/+151
The interfaces based on 'struct timespec' and 'unsigned long' seconds are no longer recommended for new code, and we are trying to migrate to ktime_t based interfaces and other y2038-safe variants. This moves all the legacy interfaces from linux/timekeeping.h into a new timekeeping32.h to better document this. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: John Stultz <john.stultz@linaro.org>