Messages in this thread | | | Date | Tue, 16 Aug 2005 13:48:39 +0400 (MSD) | From | "Lev A. Melnikovsky" <> | Subject | atime on devices |
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Hi!
It is sometimes useful to know device access time. Things that I have in mind are the software-based hard disk inactivity spindown (some brain damaged IDE drives fail to follow "hdparm -S" if the argument is longer than 1/2 hour) and sound card muting if it is not touched for a while. Notebook users might want to powerdown their network cards after inactivity as well.
I wonder if such functionality is already available or is planned to be available some time soon?
Earlier discussions I found in the list mention also atime of tty, mouse and other human interface device (but "access" meaning is somewhat different).
Thanks -L.
P.S. For my own purposes of the disk spindown I'm using an ad-hoc patch (which I wrote as a proof of the concept while using late 2.2 kernels, it is still functional in 2.4.30, never had time to rewrite it properly) to ide-disk.c, so that it exports the last access time as /proc/ide/hdX/last_access. Keeping atime attribute along with device files themselves seems more logical, but might cause side effects... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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