linux-toradex.git/include/linux/clocksource.h, branch v2.6.26-rc5

ntp: handle leap second via timer

2008-05-01T15:03:59+00:00

Remove the leap second handling from second_overflow(), which doesn't have to
check for it every second anymore.  With CONFIG_NO_HZ this also makes sure the
leap second is handled close to the full second.  Additionally this makes it
possible to abort a leap second properly by resetting the STA_INS/STA_DEL
status bits.

Signed-off-by: Roman Zippel 
Cc: john stultz 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kgdb: clocksource watchdog

2008-04-17T18:05:38+00:00

In order to not trip the clocksource watchdog, kgdb must touch the
clocksource watchdog on the return to normal system run state.

Signed-off-by: Jason Wessel 
Signed-off-by: Ingo Molnar

clocksource: add unregister function to disable unusable clocksources

2008-01-30T12:30:02+00:00

On x86 the PIT might become an unusable clocksource. Add an unregister
function to provide a possibilty to remove the PIT from the list of
available clock sources.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar

clocksource: make CLOCKSOURCE_MASK bullet-proof

2008-01-30T12:30:01+00:00

Signed-off-by: Atsushi Nemoto 
Cc: john stultz 
Signed-off-by: Andrew Morton 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

Fix discrepancy between VDSO based gettimeofday() and sys_gettimeofday().

2007-10-18T21:37:20+00:00

On platforms that copy sys_tz into the vdso (currently only x86_64, soon to
include powerpc), it is possible for the vdso to get out of sync if a user
calls (admittedly unusual) settimeofday(NULL, ptr).

This patch adds a hook for architectures that set
CONFIG_GENERIC_TIME_VSYSCALL to ensure when sys_tz is updated they can also
updatee their copy in the vdso.

Signed-off-by: Tony Breeds 
Cc: Andi Kleen 
Cc: Tony Luck 
Acked-by: John Stultz 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[IA64] Convert to generic timekeeping/clocksource

2007-07-20T18:22:30+00:00

This is a merge of Peter Keilty's initial patch (which was
revived by Bob Picco) for this with Hidetoshi Seto's fixes
and scaling improvements.

Acked-by: Bob Picco 
Signed-off-by: Tony Luck

clocksource: fix resume logic

2007-05-09T19:30:56+00:00

We need to make sure that the clocksources are resumed, when timekeeping is
resumed.  The current resume logic does not guarantee this.

Add a resume function pointer to the clocksource struct, so clocksource
drivers which need to reinitialize the clocksource can provide a resume
function.

Add a resume function, which calls the maybe available clocksource resume
functions and resets the watchdog function, so a stable TSC can be used
accross suspend/resume.

Signed-off-by: Thomas Gleixner 
Cc: john stultz 
Cc: Andi Kleen 
Cc: Ingo Molnar 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

time: SMP friendly alignment of struct clocksource

2007-05-08T18:15:06+00:00

struct clocksource is a critical data structure.

Most of its fields are read only, some of them are heavily modified at each
timer interrupt.

It makes sense to separate those fields and make sure they all share one
cache line, or at least the minimum for machines with small cache lines.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Eric Dumazet 
Acked-by: John Stultz 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] generic: vsyscall-gtod support for GENERIC_TIME

2007-02-16T16:14:00+00:00

Provides generic infrastructure for vsyscall-gtod.

[akpm@osdl.org: cleanup]
Signed-off-by: John Stultz 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: Andi Kleen 
Cc: Roman Zippel 

Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] clocksource: Add verification (watchdog) helper

2007-02-16T16:13:57+00:00

The TSC needs to be verified against another clocksource.  Instead of using
hardwired assumptions of available hardware, provide a generic verification
mechanism.  The verification uses the best available clocksource and handles
the usability for high resolution timers / dynticks of the clocksource which
needs to be verified.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Cc: john stultz 
Cc: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds