linux/kernel/printk
Linus Torvalds b0546776ad printk changes for 6.9
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmXwUvcACgkQUqAMR0iA
 lPKSEw/+NZ7MY1NlKs3+j61L3Bh6zIXJcuHJc1Zt4EPkf5N/OyJZxSYXpaFFxDEB
 at+1vcyU9Xq096rsgfxkU8tkIGOpOgLICgyzyF8ZvBNMsVdd+V0gb6PoIuVx2aWj
 wiYOZ6L8XuIGZ4BN3svk10a6Z/Fvk+HNjyuy+X+kqss5NX4hMNKK01FJyMllidC1
 4aryDPo3fKRpHBSi2YMO4NXLZGkAL8+1UoJ5p8ZWsufJKAMlQy4Vd3bIc/f6ccyy
 IuGK1+lOr6c8k/F7JO8EE2GAd8c/KvjwQR+L55YkHVoyUp2f9M19obxwqkIVeD6I
 X0y8OFNY+3hfzub6VRXob8EBmEUIdOCh6GWtT7mwzTyIouscfHltQHQxR2fMaMFF
 G066lkuVvpxhYjKtGePfQi9GtOQvdAHe7l/RS0AK53+FNzAP2I6guHRD6TSsVfNe
 erqY+4//256s/97GeqQ8ON/2gz6u/0rH6e+GiEvoMaTaw0+1YKA9xHi2Qx4AvUHk
 8TNNNZbL2PoDj744Tj1xF/zenlm1BxNeK1Q0l89ZNqPNPEokF4Hq11dW56beWpv7
 gCina3gveAnmZvdJYbn0UJ92eXjff4ZdLmiZVlVyrX2k9PVu2NYOQz4E0cPbL0Gt
 SNYgBW78e1VOcNpUokfq3OiTOQo1VDaW1SypcCbYkuc7tROq0xU=
 =Z413
 -----END PGP SIGNATURE-----

Merge tag 'printk-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk updates from Petr Mladek:
 "Improve the behavior during panic. The issues were found when testing
  the ongoing changes introducing atomic consoles and printk kthreads:

   - pr_flush() has to wait for the last reserved record instead of the
     last finalized one. Note that records are finalized in random order
     when generated by more CPUs in parallel.

   - Ignore non-finalized records during panic(). Messages printed on
     panic-CPU are always finalized. Messages printed by other CPUs
     might never be finalized when the CPUs get stopped.

   - Block new printk() calls on non-panic CPUs completely. Backtraces
     are printed before entering the panic mode. Later messages would
     just mess information printed by the panic CPU.

   - Do not take console_lock in console_flush_on_panic() at all. The
     original code did try_lock()/console_unlock(). The unlock part
     might cause a deadlock when panic() happened in a scheduler code.

   - Fix conversion of 64-bit sequence number for 32-bit atomic
     operations"

* tag 'printk-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  dump_stack: Do not get cpu_sync for panic CPU
  panic: Flush kernel log buffer at the end
  printk: Avoid non-panic CPUs writing to ringbuffer
  printk: Disable passing console lock owner completely during panic()
  printk: ringbuffer: Skip non-finalized records in panic
  printk: Wait for all reserved records with pr_flush()
  printk: ringbuffer: Cleanup reader terminology
  printk: Add this_cpu_in_panic()
  printk: For @suppress_panic_printk check for other CPU in panic
  printk: ringbuffer: Clarify special lpos values
  printk: ringbuffer: Do not skip non-finalized records with prb_next_seq()
  printk: Use prb_first_seq() as base for 32bit seq macros
  printk: Adjust mapping for 32bit seq macros
  printk: nbcon: Relocate 32bit seq macros
2024-03-12 20:54:50 -07:00
..
braille.c printk: Replace strncmp() with str_has_prefix() 2019-08-16 09:54:08 +02:00
braille.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
console_cmdline.h printk: Fix preferred console selection with multiple matches 2020-02-18 09:34:42 +01:00
index.c kernel/printk/index.c: fix memory leak with using debugfs_lookup() 2023-02-03 10:42:02 +01:00
internal.h dump_stack: Do not get cpu_sync for panic CPU 2024-02-07 17:23:19 +01:00
Makefile printk: Add non-BKL (nbcon) console basic infrastructure 2023-09-18 17:03:45 +02:00
nbcon.c printk: nbcon: Relocate 32bit seq macros 2024-02-07 17:23:17 +01:00
printk_ringbuffer.c printk: ringbuffer: Skip non-finalized records in panic 2024-02-07 17:23:18 +01:00
printk_ringbuffer.h printk: Wait for all reserved records with pr_flush() 2024-02-07 17:23:18 +01:00
printk_safe.c printk: Consolidate console deferred printing 2023-07-20 13:06:22 +02:00
printk.c printk changes for 6.9 2024-03-12 20:54:50 -07:00
sysctl.c printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin() 2022-02-03 11:27:38 -08:00