linux-kernel - [GIT PULL] printk for 5.18

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Message-ID: <YjiLijmVZGox94IH@alley>
Date:   Mon, 21 Mar 2022 15:28:26 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: [GIT PULL] printk for 5.18

Hi Linus,

please pull the latest printk changes from

  git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git tags/printk-for-5.18

==========================================

- Make %pK behave the same as %p for kptr_restrict == 0 also
  with no_hash_pointers parameter.

- Ignore the default console in the device tree also when console=null
  or console="" is used on the command line.

- Document console=null and console="" behavior.

- Prevent a deadlock and a livelock caused by console_lock in panic().

- Make console_lock available for panicking CPU.

- Fast query for the next to-be-used sequence number.

- Use the expected return values in printk.devkmsg __setup handler.

- Use the correct atomic operations in wake_up_klogd() irq_work handler.

- Avoid possible unaligned access when handling %4cc printing format.

----------------------------------------------------------------
Andre Kalb (1):
      printk: Set console_set_on_cmdline=1 when __add_preferred_console() is called with user_specified == true

Andy Shevchenko (2):
      vsprintf: Fix potential unaligned access
      vsprintf: Move space out of string literals in fourcc_string()

Christophe Leroy (1):
      vsprintf: Fix %pK with kptr_restrict == 0

Jiapeng Chong (1):
      printk: make suppress_panic_printk static

John Ogness (1):
      printk: use atomic updates for klogd work

Petr Mladek (4):
      printk: ringbuffer: Improve prb_next_seq() performance
      Merge branch 'for-5.18-vsprintf-fourcc-fixup' into for-linus
      Merge branch 'for-5.18-panic-deadlocks' into for-linus
      Merge branch 'rework/fast-next-seq' into for-linus

Randy Dunlap (2):
      Docs: printk: add 'console=null|""' to admin/kernel-parameters
      printk: fix return value of printk.devkmsg __setup handler

Stephen Brennan (4):
      printk: Add panic_in_progress helper
      printk: disable optimistic spin during panic
      printk: Avoid livelock with heavy printk during panic
      printk: Drop console_sem during panic

 Documentation/admin-guide/kernel-parameters.txt |  9 ++-
 kernel/printk/printk.c                          | 85 ++++++++++++++++++++++---
 kernel/printk/printk_ringbuffer.c               | 52 +++++++++++++--
 kernel/printk/printk_ringbuffer.h               |  2 +
 lib/vsprintf.c                                  | 49 ++++++++------
 5 files changed, 161 insertions(+), 36 deletions(-)