On Wed, 18 Apr 2012, Anton Vorontsov wrote: > This patch implements a new event type, it will trigger whenever a > value becomes greater than user-specified threshold, it complements > the 'less-then' trigger type. > > Also, let's implement the one-shot mode for the events, when set, > userspace will only receive one notification per crossing the > boundaries. > > Now when both LT and GT are set on the same level, the event type > works as a cross event type: it triggers whenever a value crosses > the threshold from a lesser values side to a greater values side, > and vice versa. > > We use the event types in an userspace low-memory killer: we get a > notification when memory becomes low, so we start freeing memory by > killing unneeded processes, and we get notification when memory hits > the threshold from another side, so we know that we freed enough of > memory. > > Signed-off-by: Anton Vorontsov <anton.vorontsov@xxxxxxxxxx> Did you try vmevent-test with this patch? I'm seeing this: Physical pages: 109858 read failed: Invalid argument Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>