On 08/10/2011 03:09 AM, Andreas Bombe wrote: > On Mon, Aug 08, 2011 at 03:21:22PM +0200, Jiri Slaby wrote: >> On 07/19/2011 02:35 AM, Andreas Bombe wrote: >>> On Thu, Jul 14, 2011 at 02:35:10PM +0200, Jiri Slaby wrote: >>>> This should also fix the issue Andreas is seeing (BTM in comparison to >>>> BKL doesn't have any hidden functionality like unlocking during >>>> sleeping). >>> >>> I tested the patch series and it does not appear to make a difference >>> for the internal (16550A) serial ports on my system. Also, I am still >>> unclear on why it freezes the X display during the timeout period. >> >> Sorry for the delay. Could you attach output of sysrq-t when this >> happens? I mean with a kernel patched by my patch. > > I did my simple test on ttyS0 again: "stty -F /dev/ttyS0 crtscts" then > "echo >/dev/ttyS0". I attached the gzipped sysrq-t list in case you need > the complete output. This is just the process while it is trying to > close the device (bash's internal echo): > > [ 321.948012] bash S ffff8800bcc85e80 0 4000 2828 0x00000000 > [ 321.948012] ffff880127079c38 0000000000000046 ffff880127079c50 0000000100002fff > [ 321.948012] ffff880127079fd8 0000000000011fc0 ffff880127079fd8 0000000000011fc0 > [ 321.948012] ffff8801270dde80 ffff8800bcc85e80 ffff880127079c38 0000000100002fff > [ 321.948012] Call Trace: > [ 321.948012] [<ffffffff813cdf2e>] schedule_timeout+0xb5/0xf2 > [ 321.948012] [<ffffffff8104ae2b>] ? call_timer_fn+0x154/0x154 > [ 321.948012] [<ffffffff81255d60>] tty_wait_until_sent+0xa3/0xec > [ 321.948012] [<ffffffff8105a190>] ? __init_waitqueue_head+0x46/0x46 > [ 321.948012] [<ffffffff81268c05>] uart_close+0x12b/0x243 > [ 321.948012] [<ffffffff81250454>] ? __tty_fasync+0x5c/0x124 > [ 321.948012] [<ffffffff81251a00>] tty_release+0x1d3/0x4d7 > [ 321.948012] [<ffffffff813cfbd8>] ? _raw_spin_unlock+0x43/0x51 > [ 321.948012] [<ffffffff8110db81>] ? dput+0xfe/0x11d > [ 321.948012] [<ffffffff810fdc86>] __fput+0x107/0x1a2 > [ 321.948012] [<ffffffff810fdd36>] fput+0x15/0x17 > [ 321.948012] [<ffffffff810fb014>] filp_close+0x69/0x75 > [ 321.948012] [<ffffffff81109654>] sys_dup3+0x12b/0x153 > [ 321.948012] [<ffffffff811096d5>] sys_dup2+0x59/0x60 > [ 321.948012] [<ffffffff813d0a12>] system_call_fastpath+0x16/0x1b > > > [ 321.948012] Sched Debug Version: v0.10, 3.1.0-rc1+ser-00011-g37ed45d #87 What tree is this? I cannot see the path through the code. thanks, -- js suse labs -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
