* [GIT PULL] printk fixups for 5.19-rc4
@ 2022-06-23 20:23 Petr Mladek
2022-06-24 18:44 ` pr-tracker-bot
0 siblings, 1 reply; 2+ messages in thread
From: Petr Mladek @ 2022-06-23 20:23 UTC (permalink / raw)
To: Linus Torvalds
Cc: Sergey Senozhatsky, Steven Rostedt, John Ogness, Andy Shevchenko,
Rasmus Villemoes, Jan Kara, Peter Zijlstra, Paul E. McKenney,
linux-kernel
Hi Linus,
please pull the revert of printk console kthreads from
git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git tags/printk-for-5.19-rc4
We, printk maintainers, really appreciate that you gave us
the chance to try the console kthreads in 5.19 release candidates.
We expected some problems and were able so solve them. But
the missing synchronization between early and normal consoles
made us nervous. We would like to review all console drivers and
look for this kind of expectations that were provided by the original
code.
There are many console drivers and the review will take some time.
We do not want to risk bigger changes late in the release cycle
and problems in the released 5.19. We prefer to revert it now.
Thanks a lot for the chance and sorry for the troubles.
We have new material for improvements.
=========================================
- Revert printk console kthreads. The testing of 5.19 release candidates
revealed issues that did not happen when all consoles were serialized
using the console semaphore. More time is needed to check expectations
of the existing console drivers and be confident that they can
be safely used in parallel.
----------------------------------------------------------------
Petr Mladek (7):
Revert "printk: Wait for the global console lock when the system is going down"
Revert "printk: Block console kthreads when direct printing will be required"
Revert "printk: remove @console_locked"
Revert "printk: extend console_lock for per-console locking"
Revert "printk: add kthread console printers"
Revert "printk: add functions to prefer direct printing"
Merge branch 'rework/kthreads' into for-linus
drivers/tty/sysrq.c | 2 -
include/linux/console.h | 17 --
include/linux/printk.h | 16 --
kernel/hung_task.c | 11 +-
kernel/panic.c | 6 -
kernel/printk/internal.h | 2 -
kernel/printk/printk.c | 593 +++++---------------------------------------
kernel/printk/printk_safe.c | 32 ---
kernel/rcu/tree_stall.h | 2 -
kernel/reboot.c | 16 +-
kernel/watchdog.c | 4 -
kernel/watchdog_hld.c | 4 -
12 files changed, 65 insertions(+), 640 deletions(-)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [GIT PULL] printk fixups for 5.19-rc4
2022-06-23 20:23 [GIT PULL] printk fixups for 5.19-rc4 Petr Mladek
@ 2022-06-24 18:44 ` pr-tracker-bot
0 siblings, 0 replies; 2+ messages in thread
From: pr-tracker-bot @ 2022-06-24 18:44 UTC (permalink / raw)
To: Petr Mladek
Cc: Linus Torvalds, Sergey Senozhatsky, Steven Rostedt, John Ogness,
Andy Shevchenko, Rasmus Villemoes, Jan Kara, Peter Zijlstra,
Paul E. McKenney, linux-kernel
The pull request you sent on Thu, 23 Jun 2022 22:23:42 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git tags/printk-for-5.19-rc4
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/9d882352bac8f2ff3753d691e2dc65fcaf738729
Thank you!
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2022-06-24 18:44 ` pr-tracker-bot
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