Searched hist:146982 (Results 1 - 3 of 3) sorted by relevance
| /freebsd-10.1-release/sys/dev/mc146818/ | ||
| H A D | mc146818.c | diff 146982 Sat Jun 04 21:24:50 MDT 2005 marius After some input from bde@ and rereading the datasheet use a MTX_SPIN mutex instead of a MTX_DEF one in order to defer preemption while reading the date and time registers. If we don't manage to read them within the time slot where we are guaranteed that no updates occur we might actually read them during an update in which case the output is undefined. |
| /freebsd-10.1-release/sys/sparc64/sparc64/ | ||
| H A D | rtc.c | diff 146982 Sat Jun 04 21:24:50 MDT 2005 marius After some input from bde@ and rereading the datasheet use a MTX_SPIN mutex instead of a MTX_DEF one in order to defer preemption while reading the date and time registers. If we don't manage to read them within the time slot where we are guaranteed that no updates occur we might actually read them during an update in which case the output is undefined. |
| /freebsd-10.1-release/sys/kern/ | ||
| H A D | subr_witness.c | diff 146982 Sat Jun 04 21:24:50 MDT 2005 marius After some input from bde@ and rereading the datasheet use a MTX_SPIN mutex instead of a MTX_DEF one in order to defer preemption while reading the date and time registers. If we don't manage to read them within the time slot where we are guaranteed that no updates occur we might actually read them during an update in which case the output is undefined. |
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