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docs: panic: cleanups for panic params

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Move 'panic_print' to its correct place in alphabetical order.
Add parameter format for 'pause_on_oops'.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230715034811.9665-1-rdunlap@infradead.org
This commit is contained in:
Randy Dunlap 2023-07-14 20:48:11 -07:00 • committed by Jonathan Corbet
parent 98899c063b
commit b4047e53ad
1 changed files with 15 additions and 15 deletions
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30
Documentation/admin-guide/kernel-parameters.txt
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@ -4037,20 +4037,6 @@
timeout < 0: reboot immediately timeout < 0: reboot immediately
Format: <timeout> Format: <timeout>
panic_print= Bitmask for printing system info when panic happens.
User can chose combination of the following bits:
bit 0: print all tasks info
bit 1: print system memory info
bit 2: print timer info
bit 3: print locks info if CONFIG_LOCKDEP is on
bit 4: print ftrace buffer
bit 5: print all printk messages in buffer
bit 6: print all CPUs backtrace (if available in the arch)
*Be aware* that this option may print a _lot_ of lines,
so there are risks of losing older messages in the log.
Use this option carefully, maybe worth to setup a
bigger log buffer with "log_buf_len" along with this.
panic_on_taint= Bitmask for conditionally calling panic() in add_taint() panic_on_taint= Bitmask for conditionally calling panic() in add_taint()
Format: <hex>[,nousertaint] Format: <hex>[,nousertaint]
Hexadecimal bitmask representing the set of TAINT flags Hexadecimal bitmask representing the set of TAINT flags
@ -4067,6 +4053,20 @@
panic_on_warn=1 panic() instead of WARN(). Useful to cause kdump panic_on_warn=1 panic() instead of WARN(). Useful to cause kdump
on a WARN(). on a WARN().
panic_print= Bitmask for printing system info when panic happens.
User can chose combination of the following bits:
bit 0: print all tasks info
bit 1: print system memory info
bit 2: print timer info
bit 3: print locks info if CONFIG_LOCKDEP is on
bit 4: print ftrace buffer
bit 5: print all printk messages in buffer
bit 6: print all CPUs backtrace (if available in the arch)
*Be aware* that this option may print a _lot_ of lines,
so there are risks of losing older messages in the log.
Use this option carefully, maybe worth to setup a
bigger log buffer with "log_buf_len" along with this.
parkbd.port= [HW] Parallel port number the keyboard adapter is parkbd.port= [HW] Parallel port number the keyboard adapter is
connected to, default is 0. connected to, default is 0.
Format: <parport#> Format: <parport#>
@ -4186,7 +4186,7 @@
mode 0, bit 1 is for mode 1, and so on. Mode 0 only mode 0, bit 1 is for mode 1, and so on. Mode 0 only
allowed by default. allowed by default.
pause_on_oops= pause_on_oops=<int>
Halt all CPUs after the first oops has been printed for Halt all CPUs after the first oops has been printed for
the specified number of seconds. This is to be used if the specified number of seconds. This is to be used if
your oopses keep scrolling off the screen. your oopses keep scrolling off the screen.