On Mon, Jan 29, 2007 at 11:42:08PM +0100, Alessandro Di Marco wrote: > Pavel Machek <[EMAIL PROTECTED]> writes: > > Hi! > > > The /proc/bus/input/devices has an extensible structure. You can just > > add an "A:" line (for Activity) instead of adding a new proc file. > > > > I know, but IMO there is too much stuff to parse in there. Activity > counters > > are frequently accessed by daemons, and four or five concurrent daemons > are the > > norm in a typical X11 linux box... > > Syscalls are fast enough, and the file is _very_ easy (=> fast) to parse. > > > Also, the activity counters should IMO coincide with the event times > > passed through /dev/input/event, and should not be jiffies based. > > Ideally, both should be based on clock_gettime(CLOCK_MONOTONIC). > > > > In evdev.c do_gettimeofday() is used. Anyway I just need of a monotonic > > counter, so get_jiffies_64() wouldn't be better? It isn't affected by > wrapping > > issues and it is probably faster than do_gtod(). > > Just use same time source rest of inputs already do... > > OK, but what about the time-warp problem?. To fix it I need to know when the > system goes to sleep/resumes. In SIN I've solved via the platform driver, > introducing suspend() resume() callbacks... Well, you just need to make sure that a resume() actually is a visible event ...
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