user/sven/linux.git/arch/cris/kernel/time.c, branch v3.15.3

time: convert arch_gettimeoffset to a pointer

2012-12-24T16:36:07Z

Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each arch core provides a single implementation of arch_gettimeoffset(). In many cases, different sub-architectures, different machines, or different timer providers exist, and so the arch ends up implementing arch_gettimeoffset() as a call-through-pointer anyway. Examples are ARM, Cris, M68K, and it's arguable that the remaining architectures, M32R and Blackfin, should be doing this anyway. Modify arch_gettimeoffset so that it itself is a function pointer, which the arch initializes. This will allow later changes to move the initialization of this function into individual machine support or timer drivers. This is particularly useful for code in drivers/clocksource which should rely on an arch-independant mechanism to register their implementation of arch_gettimeoffset(). This patch also converts the Cris architecture to set arch_gettimeoffset directly to the final implementation in time_init(), because Cris already had separate time_init() functions per sub-architecture. M68K and ARM are converted to set arch_gettimeoffset to the final implementation in later patches, because they already have function pointers in place for this purpose. Cc: Russell King Cc: Mike Frysinger Cc: Mikael Starvik Cc: Hirokazu Takata Cc: Thomas Gleixner Acked-by: Geert Uytterhoeven Acked-by: Jesper Nilsson Acked-by: John Stultz Signed-off-by: Stephen Warren

cris: move usec/nsec conversion to do_slow_gettimeoffset

2012-12-24T16:18:32Z

Move usec to nsec conversion from arch_gettimeoffset() to do_slow_gettimeoffset(); in a future patch, do_slow_gettimeoffset() will be used directly as the implementation of arch_gettimeoffset(), so needs to perform all required calculations. Cc: Mikael Starvik Cc: linux-cris-kernel@axis.com Acked-by: Jesper Nilsson Signed-off-by: Stephen Warren

CRIS: Remove legacy RTC drivers

2012-04-05T09:55:58Z

These old drivers are not used anymore, we use the ones in drivers/rtc. This allows us to remove some cruft in the CRIS timekeeping code. Signed-off-by: Jesper Nilsson

set_rtc_mmss: show warning message only once

2011-01-13T16:03:07Z

Occasionally the system gets into a state where the CMOS clock has gotten slightly ahead of current time and the periodic update of RTC fails. The message is a nuisance and repeats spamming the log. See: http://www.ntp.org/ntpfaq/NTP-s-trbl-spec.htm#Q-LINUX-SET-RTC-MMSS Rather than just removing the message, make it show only once and reduce severity since it indicates a normal and non urgent condition. Signed-off-by: Stephen Hemminger Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Ralf Baechle Cc: David Howells Cc: Paul Mundt Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

CRIS: GENERIC_TIME fixes

2010-08-04T10:58:55Z

GENERIC_TIME was not functional for CRIS, giving random backward time jumps. For CRISv32 implement a new clocksource using the free running counter and ditch the arch_gettimeoffset. The random time jumps still existed, but turned out to be the write_seqlock which was missing around our do_timer() call. So switch over to GENERIC_TIME using the clocksource for CRISv32. CRISv10 doesn't have the free running counter needed for the clocksource trick, but we can still use GENERIC_TIME with arch_gettimeoffset. Unfortunately, there were problems in using the prescaler register to timer0 for the gettimeoffset calculation, so it is now ignored, making our resolution worse by the tune of 40usec (0.4%) worst case. At the same time, clean up some formatting and use NSEC_PER_SEC instead of 1000000000. Signed-off-by: Jesper Nilsson

cris: Convert cris to use read/update_persistent_clock

2010-03-13T00:14:13Z

This patch converts the cris architecture to use the generic read_persistent_clock and update_persistent_clock interfaces, reducing the amount of arch specific code we have to maintain, and allowing for further cleanups in the future. I have not built or tested this patch, so help from arch maintainers would be appreciated. Signed-off-by: John Stultz Cc: Mikael Starvik Cc: Jesper Nilsson Cc: Andrew Morton LKML-Reference: <1267675049-12337-14-git-send-email-johnstul@us.ibm.com> Signed-off-by: Thomas Gleixner

cris: convert to use arch_gettimeoffset()

2010-03-06T19:26:28Z

Convert cris to use GENERIC_TIME via the arch_getoffset() infrastructure, reducing the amount of arch specific code we need to maintain. Signed-off-by: John Stultz Cc: Mikael Starvik Cc: Jesper Nilsson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

cris: use bcd2bin/bin2bcd

2008-10-20T15:52:41Z

Change cris to use the new bcd2bin/bin2bcd functions instead of the obsolete BCD_TO_BIN/BIN_TO_BCD macros. Signed-off-by: Adrian Bunk Cc: Chris Zankel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

CRIS: Drop regs parameter from call to profile_tick in kernel/time.c

2008-02-08T10:06:40Z

CRIS: Add sched_clock to kernel/time.c

2008-02-08T10:06:37Z

Also, clean up some whitespace errors.