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Al's comment fixes

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This commit is contained in:
Ben Gras 2005-10-05 08:21:35 +00:00
parent 5fd54a0d53
commit afc6721239
1 changed files with 3 additions and 3 deletions
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6
kernel/clock.c
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@ -1,3 +1,4 @@
/* The file contais the clock task, which handles all time related functions. /* The file contais the clock task, which handles all time related functions.
* Important events that are handled by the CLOCK include alarm timers and * Important events that are handled by the CLOCK include alarm timers and
* (re)scheduling user processes. * (re)scheduling user processes.
@ -10,7 +11,7 @@
* Sep 30, 2004 source code documentation updated (Jorrit N. Herder) * Sep 30, 2004 source code documentation updated (Jorrit N. Herder)
* Sep 24, 2004 redesigned alarm timers (Jorrit N. Herder) * Sep 24, 2004 redesigned alarm timers (Jorrit N. Herder)
* *
* The function do_clocktick() is not triggered by the clock's interrupt * The function do_clocktick() is only triggered by the clocks interrupt
* handler when a watchdog timer has expired or a process must be scheduled. * handler when a watchdog timer has expired or a process must be scheduled.
* *
* In addition to the main clock_task() entry point, which starts the main * In addition to the main clock_task() entry point, which starts the main
@ -19,7 +20,6 @@
* get_uptime: get realtime since boot in clock ticks * get_uptime: get realtime since boot in clock ticks
* set_timer: set a watchdog timer (+) * set_timer: set a watchdog timer (+)
* reset_timer: reset a watchdog timer (+) * reset_timer: reset a watchdog timer (+)
* calc_elapsed: do timing measurements: get delta ticks and pulses
* read_clock: read the counter of channel 0 of the 8253A timer * read_clock: read the counter of channel 0 of the 8253A timer
* *
* (+) The CLOCK task keeps tracks of watchdog timers for the entire kernel. * (+) The CLOCK task keeps tracks of watchdog timers for the entire kernel.
@ -186,7 +186,7 @@ irq_hook_t *hook;
} }
/* Check if do_clocktick() must be called. Done for alarms and scheduling. /* Check if do_clocktick() must be called. Done for alarms and scheduling.
* Some processes, such as the kernel tasks, cannot be preempted. * Even the clock and system tasks get finite, but large, quanta.
*/ */
if ((next_timeout <= realtime) || (proc_ptr->p_ticks_left <= 0)) { if ((next_timeout <= realtime) || (proc_ptr->p_ticks_left <= 0)) {
prev_ptr = proc_ptr; /* store running process */ prev_ptr = proc_ptr; /* store running process */