Author: mav
Date: Fri Jul 23 08:20:14 2010
New Revision: 210404
URL: http://svn.freebsd.org/changeset/base/210404
Log:
Add some comments.
Modified:
head/sys/mips/mips/tick.c
Modified: head/sys/mips/mips/tick.c
==============================================================================
--- head/sys/mips/mips/tick.c Fri Jul 23 07:46:55 2010 (r210403)
+++ head/sys/mips/mips/tick.c Fri Jul 23 08:20:14 2010 (r210404)
@@ -259,7 +259,7 @@ clock_intr(void *arg)
compare_next = count + cycles_per_tick;
DPCPU_SET(compare_ticks, compare_next);
mips_wr_compare(compare_next);
- } else
+ } else /* In one-shot mode timer should be stopped after the event. */
mips_wr_compare(0xffffffff);
critical_enter();
@@ -352,7 +352,7 @@ clock_attach(device_t dev)
sc->et.et_quality = 800;
sc->et.et_frequency = counter_freq;
sc->et.et_min_period.sec = 0;
- sc->et.et_min_period.frac = 0x00004000LLU << 32;
+ sc->et.et_min_period.frac = 0x00004000LLU << 32; /* To be safe. */
sc->et.et_max_period.sec = 0xfffffffeU / sc->et.et_frequency;
sc->et.et_max_period.frac =
((0xfffffffeLLU << 32) / sc->et.et_frequency) << 32;
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