* Re: WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc()
@ 2013-01-19 22:44 Sedat Dilek
2013-01-19 22:51 ` Eric Sandeen
2013-01-20 0:14 ` Sedat Dilek
0 siblings, 2 replies; 4+ messages in thread
From: Sedat Dilek @ 2013-01-19 22:44 UTC (permalink / raw)
To: Dave Jones
Cc: Jiri Slaby, Greg Kroah-Hartman, Ilya Zykov, LKML, linux-next,
linux-serial, Stephen Rothwell, Jan Kara, Eric Sandeen,
Theodore Ts'o, linux-fsdevel
Hi Dave,
I suspected after initial testing a problem in TTY and applied two patches.
After more testing the root cause was a problem in JBD2.
A patch from Eric helped!
Follow the thread in [1] for more details.
If you are on Linux-Next (next-20130118) you need the following three patches.
Ilya Zykov (2):
tty: Correct tty buffer flush.
tty: Add driver unthrottle in ioctl(...,TCFLSH,..).
Eric Sandeen (1):
jbd2: don't wake kjournald unnecessarily
Hope this helps you.
Regards,
- Sedat -
[0] http://marc.info/?t=135862023700004&r=1&w=2
[1] http://marc.info/?l=linux-serial&m=135860500714909&w=2
[2] http://git.kernel.org/?p=linux/kernel/git/gregkh/tty.git;a=commitdiff;h=a1bf9584429d61b7096f93ae09325e1ba538e9e8
[3] http://patchwork.ozlabs.org/patch/207237/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc()
2013-01-19 22:44 WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc() Sedat Dilek
@ 2013-01-19 22:51 ` Eric Sandeen
2013-01-19 22:57 ` Sedat Dilek
2013-01-20 0:14 ` Sedat Dilek
1 sibling, 1 reply; 4+ messages in thread
From: Eric Sandeen @ 2013-01-19 22:51 UTC (permalink / raw)
To: sedat.dilek
Cc: Dave Jones, Jiri Slaby, Greg Kroah-Hartman, Ilya Zykov, LKML,
linux-next, linux-serial, Stephen Rothwell, Jan Kara,
Theodore Ts'o, linux-fsdevel
On 1/19/13 4:44 PM, Sedat Dilek wrote:
> Hi Dave,
>
> I suspected after initial testing a problem in TTY and applied two patches.
> After more testing the root cause was a problem in JBD2.
> A patch from Eric helped!
oh, excellent ;)
Helped what, exactly?
> Follow the thread in [1] for more details.
>
> If you are on Linux-Next (next-20130118) you need the following three patches.
>
> Ilya Zykov (2):
> tty: Correct tty buffer flush.
> tty: Add driver unthrottle in ioctl(...,TCFLSH,..).
>
> Eric Sandeen (1):
> jbd2: don't wake kjournald unnecessarily
Hum, I would not have expected this to *matter*, I thought it was just a perf
optimization. Hm. What do you think it fixed, exactly?
(sorry, have not followed that thread, busy elsewhere ATM)
-eric
> Hope this helps you.
>
> Regards,
> - Sedat -
>
> [0] http://marc.info/?t=135862023700004&r=1&w=2
> [1] http://marc.info/?l=linux-serial&m=135860500714909&w=2
> [2] http://git.kernel.org/?p=linux/kernel/git/gregkh/tty.git;a=commitdiff;h=a1bf9584429d61b7096f93ae09325e1ba538e9e8
> [3] http://patchwork.ozlabs.org/patch/207237/
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc()
2013-01-19 22:51 ` Eric Sandeen
@ 2013-01-19 22:57 ` Sedat Dilek
0 siblings, 0 replies; 4+ messages in thread
From: Sedat Dilek @ 2013-01-19 22:57 UTC (permalink / raw)
To: Eric Sandeen
Cc: Dave Jones, Jiri Slaby, Greg Kroah-Hartman, Ilya Zykov, LKML,
linux-next, linux-serial, Stephen Rothwell, Jan Kara,
Theodore Ts'o, linux-fsdevel
On Sat, Jan 19, 2013 at 11:51 PM, Eric Sandeen <sandeen@redhat.com> wrote:
> On 1/19/13 4:44 PM, Sedat Dilek wrote:
>> Hi Dave,
>>
>> I suspected after initial testing a problem in TTY and applied two patches.
>> After more testing the root cause was a problem in JBD2.
>> A patch from Eric helped!
>
> oh, excellent ;)
>
> Helped what, exactly?
>
Fixed a call-trace which I could reproduce running pm_test/freezer
(see [1] "[C.1] TRY TO FORCE THE CALL-TRACE").
- Sedat -
[1] http://marc.info/?l=linux-kernel&m=135862010419101&w=2
>>
Follow the thread in [1] for more details.
>>
>> If you are on Linux-Next (next-20130118) you need the following three patches.
>>
>> Ilya Zykov (2):
>> tty: Correct tty buffer flush.
>> tty: Add driver unthrottle in ioctl(...,TCFLSH,..).
>>
>> Eric Sandeen (1):
>> jbd2: don't wake kjournald unnecessarily
>
> Hum, I would not have expected this to *matter*, I thought it was just a perf
> optimization. Hm. What do you think it fixed, exactly?
>
> (sorry, have not followed that thread, busy elsewhere ATM)
>
> -eric
>
>> Hope this helps you.
>>
>> Regards,
>> - Sedat -
>>
>> [0] http://marc.info/?t=135862023700004&r=1&w=2
>> [1] http://marc.info/?l=linux-serial&m=135860500714909&w=2
>> [2] http://git.kernel.org/?p=linux/kernel/git/gregkh/tty.git;a=commitdiff;h=a1bf9584429d61b7096f93ae09325e1ba538e9e8
>> [3] http://patchwork.ozlabs.org/patch/207237/
>>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc()
2013-01-19 22:44 WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc() Sedat Dilek
2013-01-19 22:51 ` Eric Sandeen
@ 2013-01-20 0:14 ` Sedat Dilek
1 sibling, 0 replies; 4+ messages in thread
From: Sedat Dilek @ 2013-01-20 0:14 UTC (permalink / raw)
To: Dave Jones
Cc: Jiri Slaby, Greg Kroah-Hartman, Ilya Zykov, LKML, linux-next,
linux-serial, Stephen Rothwell, Jan Kara, Eric Sandeen,
Theodore Ts'o, linux-fsdevel
On Sat, Jan 19, 2013 at 11:44 PM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
> Hi Dave,
>
> I suspected after initial testing a problem in TTY and applied two patches.
> After more testing the root cause was a problem in JBD2.
> A patch from Eric helped!
> Follow the thread in [1] for more details.
>
> If you are on Linux-Next (next-20130118) you need the following three patches.
>
> Ilya Zykov (2):
> tty: Correct tty buffer flush.
> tty: Add driver unthrottle in ioctl(...,TCFLSH,..).
>
> Eric Sandeen (1):
> jbd2: don't wake kjournald unnecessarily
>
> Hope this helps you.
>
> Regards,
> - Sedat -
>
> [0] http://marc.info/?t=135862023700004&r=1&w=2
> [1] http://marc.info/?l=linux-serial&m=135860500714909&w=2
> [2] http://git.kernel.org/?p=linux/kernel/git/gregkh/tty.git;a=commitdiff;h=a1bf9584429d61b7096f93ae09325e1ba538e9e8
> [3] http://patchwork.ozlabs.org/patch/207237/
I am awfully sorry to tell you that my (JBD2) problem still exist!
Not sure this is anymore related to TTY-NEXT, so better I shut up!
- Sedat -
[1] http://marc.info/?l=linux-kernel&m=135864041624404&w=2
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-01-20 0:14 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2013-01-19 22:44 WARNING: at drivers/tty/tty_buffer.c:476 flush_to_ldisc() Sedat Dilek
2013-01-19 22:51 ` Eric Sandeen
2013-01-19 22:57 ` Sedat Dilek
2013-01-20 0:14 ` Sedat Dilek
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