I am currently reading through that part of the code to make sure that some Kconfig options are not responsible for this behaviour. If you can think of any, it would be a help.
Regards, Amit On Jan 17, 2008 1:17 AM, Bastian, Waldo <[EMAIL PROTECTED]> wrote: > DRM_IOCTL_LOCK ends up with drm_lock() in drm_lock.c part of drm.ko > > Cheers, > Waldo > > Intel Corporation - Platform Software Engineering, UMG - Hillsboro, > Oregon > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bryce > Harrington > Sent: Wednesday, January 16, 2008 2:55 PM > To: Gunawardana, Inuka > Cc: ubuntu-mobile@lists.ubuntu.com > Subject: Backtrace > > Finally got a readable backtrace: > > #0 0xb7fd440e in __kernel_vsyscall () > #1 0xb7e25bc9 in ioctl () from /lib/libc.so.6 > #2 0xb7bc4a1d in drmGetLock (fd=10, context=2, flags=3213662516) at > xf86drm.c:1259 > #3 0xb7bb951b in psbDRILock (pScrn=0x820bcd0, flags=0) at psb_dri.c:724 > #4 0xb7baf983 in psbScreenInit (scrnIndex=0, pScreen=0x821b2d8, argc=6, > argv=0xbf8c9b74) at psb_driver.c:1342 > #5 0x08073ddb in AddScreen (pfnInit=0xb7baf7f0 <psbScreenInit>, argc=6, > argv=0xbf8c9b74) at ../../dix/main.c:769 > #6 0x080a6e39 in InitOutput (pScreenInfo=0x81fa640, argc=6, > argv=0xbf8c9b74) at ../../../../hw/xfree86/common/xf86Init.c:850 > #7 0x08074590 in main (argc=6, argv=0xbf8c9b74, envp=Cannot access > memory at address 0x40086432 > ) at ../../dix/main.c:369 > > This also confirms my explorations from the other side, that the issue > is within psbDRILock. > > drmGetLock is defined in libdrm, as this: > > int drmGetLock(int fd, drm_context_t context, drmLockFlags flags) > { > drm_lock_t lock; > > lock.context = context; > lock.flags = 0; > if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY; > if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT; > if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH; > if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; > if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; > if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; > > while (ioctl(fd, DRM_IOCTL_LOCK, &lock)) > ; > return 0; > } > > Bryce > > > -- > Ubuntu-mobile mailing list > Ubuntu-mobile@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile > > -- > Ubuntu-mobile mailing list > Ubuntu-mobile@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile > -- Ubuntu-mobile mailing list Ubuntu-mobile@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile
