diff options
| author | Guilherme G. Piccoli <[email protected]> | 2022-03-23 16:07:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2022-03-23 19:00:35 -0700 |
| commit | a1ff1de00db21ecb956213f046b79741b64c6b65 (patch) | |
| tree | e1c12cdcd7cdb477465343f4d975d3981f7a470e | |
| parent | 92333baaceb399c7878c7f868a0746d7d22f9b77 (diff) | |
docs: sysctl/kernel: add missing bit to panic_print
Patch series "Some improvements on panic_print".
This is a mix of a documentation fix with some additions to the
"panic_print" syscall / parameter. The goal here is being able to collect
all CPUs backtraces during a panic event and also to enable "panic_print"
in a kdump event - details of the reasoning and design choices in the
patches.
This patch (of 3):
Commit de6da1e8bcf0 ("panic: add an option to replay all the printk
message in buffer") added a new bit to the sysctl/kernel parameter
"panic_print", but the documentation was added only in
kernel-parameters.txt, not in the sysctl guide.
Fix it here by adding bit 5 to sysctl admin-guide documentation.
[[email protected]: fix table format warning]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: de6da1e8bcf0 ("panic: add an option to replay all the printk message in buffer")
Signed-off-by: Guilherme G. Piccoli <[email protected]>
Reviewed-by: Feng Tang <[email protected]>
Cc: Luis Chamberlain <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Iurii Zaikin <[email protected]>
Cc: Samuel Iglesias Gonsalvez <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index d359bcfadd39..0f86e9f93129 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -795,6 +795,7 @@ 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 ===== ============================================ So for example to print tasks and memory info on panic, user can:: |