07 Mar, 2006
1 commit
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Also from Thomas Gleixner
Function next_timer_interrupt() got broken with a recent patch
6ba1b91213e81aa92b5cf7539f7d2a94ff54947c as sys_nanosleep() was moved to
hrtimer. This broke things as next_timer_interrupt() did not check hrtimer
tree for next event.Function next_timer_interrupt() is needed with dyntick (CONFIG_NO_IDLE_HZ,
VST) implementations, as the system can be in idle when next hrtimer event
was supposed to happen. At least ARM and S390 currently use
next_timer_interrupt().Signed-off-by: Thomas Gleixner
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Feb, 2006
1 commit
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CONFIG_TIME_LOW_RES is a temporary way for architectures to signal that
they simply return xtime in do_gettimeoffset(). In this corner-case we
want to round up by resolution when starting a relative timer, to avoid
short timeouts. This will go away with the GTOD framework.Signed-off-by: Ingo Molnar
Cc: Roman Zippel
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Feb, 2006
3 commits
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At some point we added credits to people who actively helped to bring
k/hr-timers along. This was lost in the big code revamp. Add it back.Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Clean up the interface to hrtimers by changing the init code to pass the mode
as well as the clock. This allow the init code to select the correct base and
eliminates extra timer re-init code in posix-timers. We also simplify the
restart interface nanosleep use.Signed-off-by: George Anzinger
Signed-off-by: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
From: Steven Rostedtrostedt@goodmis.org
CPU0 expires a posix-timer and runs the callback function. The signal is
queued.After releasing the posix-timer lock and before returning to hrtimer_run_queue
CPU0 gets interrupted. CPU1 delivers the queued signal and rearms the timer.
CPU0 comes back to hrtimer_run_queue and sets the timer state to expired.The next modification of the timer can result in an oops, because the state
information is wrong.Keep track of state = RUNNING and check if the state has been in the return
path of hrtimer_run_queue. In case the state has been changed, ignore a
restart request and do not touch the state variable.Signed-off-by: Steven Rostedt
Signed-off-by: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Jan, 2006
2 commits
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fix the following sparse warning:
kernel/hrtimer.c:665:34: warning: incorrect type in argument 2 (different address spaces)
kernel/hrtimer.c:665:34: expected void const *from
kernel/hrtimer.c:665:34: got struct timespec [noderef] *
kernel/hrtimer.c:664:2: warning: dereference of noderef expressionSigned-off-by: Ingo Molnar
Signed-off-by: Linus Torvalds -
Fix a comment which missed an update cycle somewhere.
Signed-off-by: Jonathan Corbet
Signed-off-by: Linus Torvalds
12 Jan, 2006
3 commits
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Roman Zippel pointed out that the missing lower limit of intervals
leads to an accounting error in the overrun count. Enforce the lower
limit of intervals to resolution in the timer forwarding code.Signed-off-by: Thomas Gleixner
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Change the storage format of the per base resolution to ktime_t to
make it easier accessible in the hrtimers code.Change the resolution from (NSEC_PER_SEC/HZ) to TICK_NSEC as Roman
pointed out. TICK_NSEC is closer to the real resolution.Signed-off-by: Thomas Gleixner
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The list_head in the hrtimer structure was introduced for easy access
to the first timer with the further extensions of real high resolution
timers in mind, but it turned out in the course of development that
it is not necessary for the standard use case. Remove the list head
and access the first expiry timer by a datafield in the timer base.Signed-off-by: Thomas Gleixner
11 Jan, 2006
4 commits
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This series removes the getnstimestamp() function from kernel/time.c in favor
of kernel/hrtimer.c's ktime_get_ts() function which currently does exactly the
same thing: retrieves a high-resolution (ns) timespec structure and performs
the wall_to_monotonic adjustment.This patch:
Export ktime_get_ts() to be used as a timestamp function since it uses
getnstimefoday() and does the wall_to_monotonic adjustment.Signed-off-by: Matt Helsley
Cc: john stultz
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
convert sys_nanosleep() to use hrtimer_nanosleep()
Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
introduce the hrtimer_nanosleep() and hrtimer_nanosleep_real() APIs. Not yet
used by any code.Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
hrtimer subsystem core. It is initialized at bootup and expired by the timer
interrupt, but is otherwise not utilized by any other subsystem yet.Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
