[GIT PULL] printk for 4.18

[Petr Mladek]

Linus,

please pull the latest printk changes from

  git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk tags/printk-for-4.18

There will be conflicts in lib/vsprintf.c that are caused by late fixes for
4.17. The proposed resolution can be found in the branch

  git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk.git for-4.18-vsprintf-conflict

Also I am sorry that I have rebased today. I added one late ack and
removed one fix that was not good enough. I found a race in that fix
when writing this summary.

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

- Help userspace log daemons to catch up with a flood of messages. They
  will get waken after each message even if the console is far behind and
  handled by another process.

- Flush printk safe buffers safely even when panic() happens in the normal
  context.

- Fix possible va_list reuse when race happened in printk_safe().

- Remove %pCr printf format to prevent sleeping in the atomic context.

- Misc vsprintf code cleanup.

----------------------------------------------------------------
Andy Shevchenko (7):
      lib/test_printf: Mark big constant with UL
      lib/vsprintf: Make dec_spec global
      lib/vsprintf: Make strspec global
      lib/vsprintf: Make flag_spec global
      lib/vsprintf: Move pointer_string() upper
      lib/vsprintf: Deduplicate pointer_string()
      lib/vsprintf: Mark expected switch fall-through

Geert Uytterhoeven (4):
      clk: renesas: cpg-mssr: Stop using printk format %pCr
      thermal: bcm2835: Stop using printk format %pCr
      serial: sh-sci: Stop using printk format %pCr
      lib/vsprintf: Remove atomic-unsafe support for %pCr

Petr Mladek (2):
      Merge branch 'for-4.18-vsprintf-cleanup' into for-4.18
      Merge branch 'for-4.18-vsprintf-pcr-removal' into for-4.18

Sergey Senozhatsky (3):
      vsprintf: Tweak pF/pf comment
      printk: wake up klogd in vprintk_emit
      printk: drop in_nmi check from printk_safe_flush_on_panic()

Shunyong Yang (1):
      lib/vsprintf: Replace space with '_' before crng is ready

Tetsuo Handa (1):
      printk: fix possible reuse of va_list variable

 Documentation/core-api/printk-formats.rst  |   3 +-
 drivers/clk/renesas/renesas-cpg-mssr.c     |   9 +-
 drivers/thermal/broadcom/bcm2835_thermal.c |   4 +-
 drivers/tty/serial/sh-sci.c                |   4 +-
 kernel/printk/printk.c                     |  14 +--
 kernel/printk/printk_safe.c                |   7 +-
 lib/test_printf.c                          |   2 +-
 lib/vsprintf.c                             | 133 ++++++++++++-----------------
 8 files changed, 71 insertions(+), 105 deletions(-)