[GIT PULL] printk for 4.20

[Petr Mladek]

Linus,

please pull the latest printk changes from

  git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk tags/printk-for-4.20

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

- Fix two more locations where printf formatting leaked pointers.
- Better log_buf_len parameter handling.
- Add prefix to messages from printk code.
- Do not miss messages on other consoles when the log is replayed
  on a new one.
- Reduce race between console registration and panic() when the log
  might get replayed on all consoles.
- Some cont buffer code clean up.
- Call console only when there is something to do (log vs. cont buffer).

----------------------------------------------------------------
Geert Uytterhoeven (4):
      lib/vsprintf: Make ptr argument conts in ptr_to_id()
      lib/vsprintf: Prepare for more general use of ptr_to_id()
      lib/vsprintf: Hash legacy clock addresses
      lib/vsprintf: Hash printed address for netdev bits fallback

He Zhe (4):
      printk: Fix panic caused by passing log_buf_len to command line
      printk: Correct wrong casting
      printk: Add KBUILD_MODNAME and remove a redundant print prefix
      printk: Give error on attempt to set log buffer length to over 2G

Petr Mladek (2):
      printk: Do not miss new messages when replaying the log
      Merge branch 'for-4.20-vsprintf-hash-fixes' into for-linus

Sergey Senozhatsky (5):
      printk: CON_PRINTBUFFER console registration is a bit racy
      printk: keep kernel cont support always enabled
      printk: lock/unlock console only for new logbuf entries
      printk: do not preliminary split up cont buffer
      printk: fix integer overflow in setup_log_buf()

 Documentation/core-api/printk-formats.rst |   5 +-
 kernel/printk/printk.c                    |  86 ++++++------
 lib/vsprintf.c                            | 216 +++++++++++++++---------------
 3 files changed, 158 insertions(+), 149 deletions(-)