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path: root/include/linux/hrtimer.h
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2006-04-02Documentation: fix minor kernel-doc warningsMartin Waitz1-1/+1
This patch updates the comments to match the actual code. Signed-off-by: Martin Waitz <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-03-31[PATCH] hrtimer: create generic sleeperThomas Gleixner1-0/+16
The removal of the data field in the hrtimer structure enforces the embedding of the timer into another data structure. nanosleep now uses a private implementation of the most common used timer callback function (simple task wakeup). In order to avoid the reimplentation of such functionality all over the place a generic hrtimer_sleeper functionality is created. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-26[PATCH] hrtimers: remove data fieldRoman Zippel1-4/+1
The nanosleep cleanup allows to remove the data field of hrtimer. The callback function can use container_of() to get it's own data. Since the hrtimer structure is anyway embedded in other structures, this adds no overhead. Signed-off-by: Roman Zippel <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-26[PATCH] hrtimers: remove state fieldRoman Zippel1-9/+2
Remove the state field and encode this information in the rb_node similiar to normal timer. Signed-off-by: Roman Zippel <[email protected]> Acked-by: Ingo Molnar <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-26[PATCH] hrtimers: simplify nanosleepRoman Zippel1-3/+1
nanosleep is the only user of the expired state, so let it manage this itself, which makes the hrtimer code a bit simpler. The remaining time is also only calculated if requested. Signed-off-by: Roman Zippel <[email protected]> Acked-by: Ingo Molnar <[email protected]> Acked-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-26[PATCH] hrtimers: pass current time to hrtimer_forward()Roman Zippel1-1/+2
Pass current time to hrtimer_forward(). This allows to use the softirq time in the timer base when the forward function is called from the timer callback. Other places pass current time with a call to timer->base->get_time(). Signed-off-by: Roman Zippel <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-26[PATCH] hrtimers: optimize softirq runqueuesThomas Gleixner1-8/+12
The hrtimer softirq is called from the timer softirq every tick. Retrieve the current time from xtime and wall_to_monotonic instead of calling base->get_time() for each timer base. Store the time in the base structure and provide a hook once clock source abstractions are in place and to keep the code open for new base clocks. Based on a patch from: Roman Zippel <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-06[PATCH] fix next_timer_interrupt() for hrtimerTony Lindgren1-0/+4
Also from Thomas Gleixner <[email protected]> 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 <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Russell King <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-02-01[PATCH] hrtimers: cleanups and simplificationsGeorge Anzinger1-3/+2
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 <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-02-01[PATCH] hrtimers: fix posix-timer requeue race[email protected]1-0/+1
From: Steven [email protected] <[email protected]> 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 <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-12[hrtimer] Enforce resolution as lower limit of intervalsThomas Gleixner1-2/+1
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 <[email protected]>
2006-01-12[hrtimer] Change resolution storage to ktime_t formatThomas Gleixner1-1/+1
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 <[email protected]>
2006-01-12[hrtimer] Remove listhead from hrtimer structThomas Gleixner1-5/+2
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 <[email protected]>
2006-01-10[PATCH] hrtimer: convert posix timers completelyThomas Gleixner1-0/+7
- convert posix-timers.c to use hrtimers - remove the now obsolete abslist code Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-10[PATCH] hrtimer: create hrtimer nanosleep APIThomas Gleixner1-0/+6
introduce the hrtimer_nanosleep() and hrtimer_nanosleep_real() APIs. Not yet used by any code. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-10[PATCH] hrtimer: hrtimer core codeThomas Gleixner1-0/+130
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 <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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