On Wed, Apr 18, 2012 at 11:01:02PM +0300, Pekka Enberg wrote: > 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: Yep, with CONFIG_SWAP=n, and I had to a modify the test since I saw the same thing, I believe. I'll try w/ the swap enabled, and see how it goes. I think the vmevent-test.c needs some improvemnts in general, but meanwhile... > Physical pages: 109858 > read failed: Invalid argument Can you send me the .config file that you used? Might be that you have CONFIG_SWAP=n too? Thanks! -- Anton Vorontsov Email: cbouatmailru@xxxxxxxxx -- 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>