> Which, BTW, is a wonderful reason for having multiple channels. Instead > of write(fd, "critical_command", 8); read(fd,....); you read from the right fd. > Opened before you enter the hotspot. Less overhead than ioctl() would > have... The ioctl is one syscall, the read/write pair are two. Im not sure that ioctl is going to be more overhead there. In the video4linux case the high overhead is acking frames received by mmap so might conceivably be considered one way - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Re: [RFD w/info-PATCH] device arguments from look... Erik Mouw
- Re: [RFD w/info-PATCH] device arguments from ... Steven Walter
- Re: [RFD w/info-PATCH] device arguments from lookup, parti... Richard Gooch
- Re: [RFD w/info-PATCH] device arguments from lookup, ... Richard Gooch
- Re: [RFD w/info-PATCH] device arguments from look... Matthew Wilcox
- Re: [RFD w/info-PATCH] device arguments from look... Alexander Viro
- Re: [RFD w/info-PATCH] device arguments from ... Richard Gooch
- Re: [RFD w/info-PATCH] device arguments f... Pavel Machek
- Re: [RFD w/info-PATCH] device arguments f... Alan Cox
- Re: [RFD w/info-PATCH] device arguments f... Alexander Viro
- Re: [RFD w/info-PATCH] device arguments f... Alan Cox
- Re: [RFD w/info-PATCH] device arguments f... Matthew Wilcox
- Re: [RFD w/info-PATCH] device arguments f... Linus Torvalds
- Re: [RFD w/info-PATCH] device arguments f... Matthew Wilcox
- Re: [RFD w/info-PATCH] device arguments f... Alan Cox
- Re: [RFD w/info-PATCH] device arguments f... Matthew Wilcox
- Re: [RFD w/info-PATCH] device arguments f... Alan Cox
- Re: [RFD w/info-PATCH] device arguments f... Matthew Wilcox
- Re: [RFD w/info-PATCH] device arguments f... Alan Cox
- Re: [RFD w/info-PATCH] device arguments from lookup, ... Alexander Viro
- Re: [RFD w/info-PATCH] device arguments from lookup, ... David Woodhouse