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@@ -304,14 +304,20 @@ Note that before the first will be called, we lock the `clocksource_mutex` [mute
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The first `clocksource_enqueue` function and other two defined in the same source code [file](https://github.com/torvalds/linux/tree/master/kernel/time/clocksource.c). We go through all already registered `clocksources` or in other words we go through all elements of the `clocksource_list` and tries to find best place for a given `clocksource`:
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```C
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+/*
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+ * Enqueue the clocksource sorted by rating
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+ */
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static void clocksource_enqueue(struct clocksource *cs)
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{
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struct list_head *entry = &clocksource_list;
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struct clocksource *tmp;
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- list_for_each_entry(tmp, &clocksource_list, list)
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- if (tmp->rating >= cs->rating)
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- entry = &tmp->list;
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+ list_for_each_entry(tmp, &clocksource_list, list) {
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+ /* Keep track of the place, where to insert */
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+ if (tmp->rating < cs->rating)
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+ break;
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+ entry = &tmp->list;
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+ }
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list_add(&cs->list, entry);
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}
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```
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Z