"Alexander Gordeev" <[email protected]> wrote: >В Thu, 27 Jan 2011 16:53:39 -0800 (PST) >Davide Libenzi <[email protected]> пишет: > >> On Fri, 28 Jan 2011, Alexander Gordeev wrote: >> >> > Hi! >> > >> > I've just found a problem with TFD_NONBLOCK flag that can be passed >to >> > timerfd_create. >> > >> > <uclibc>/libc/sysdeps/linux/common/sys/timerfd.h which is installed >> > to /usr/include/sys/timerfd.h defines TFD_NONBLOCK as 04000 ie >0x800. >> > BTW glibc/eglibc headers do the same thing. >> > >> > <linux>/include/linux/timerfd.h declares it as O_NONBLOCK which is >> > defined in fcntl.h. Usually O_NONBLOCK is 0x800 too but some >> > architectures including MIPS it redefine it: >> > >> > arch/mips/include/asm/fcntl.h:#define O_NONBLOCK 0x0080 >> > arch/alpha/include/asm/fcntl.h:#define O_NONBLOCK 00004 >> > arch/sparc/include/asm/fcntl.h:#define O_NONBLOCK 0x4000 >> > arch/parisc/include/asm/fcntl.h:#define O_NONBLOCK 000200004 >> > >> > My tests show that kernel thinks that TFD_NONBLOCK is 0x80 on MIPS. >I >> > get what I want when I pass 0x80 and EINVAL when I pass 0x800. I >don't >> > know why there are such uncertain things in Linux. Probably the >problem >> > should be fixed in the kernel. >> > >> > Right now one cannot use timerfd_create(..., TFD_NONBLOCK) on MIPS >but >> > can use timerfd_create(..., O_NONBLOCK) instead. >> >> Ther kernel definition (include/linux/timerfd.h) maps it directly to >> O_NONBLOCK, but I am noticing that glibc bolt in the value. >> I don't think this is a kernel fix. > >Yes, but linux/timerfd.h is not installed so timerfd.h from *libc >cannot include it. So adding it to include/linux/Kbuild would be a >first step to make them not hard-code the value. Right? > >-- > Alexander >_______________________________________________ >uClibc mailing list >[email protected] >http://lists.busybox.net/mailman/listinfo/uclibc
Hi, Sounds we need a mips specific timerfd.h then. Can you send a tested patch against current master, please? _______________________________________________ uClibc mailing list [email protected] http://lists.busybox.net/mailman/listinfo/uclibc
