Kvdev #122
Merged
Kvdev #122
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
added 4 commits
October 17, 2024 16:22
# echo 0 >/proc/sys/kernel/ftrace_enabled -bash: echo: write error: Device or resource busy
We go old-school here. Result is same: # echo 0 >/proc/sys/kernel/ftrace_enabled -bash: echo: write error: Device or resource busy Also (for all kernels): $ sudo sysctl kernel.ftrace_enabled=0 sysctl: setting key "kernel.ftrace_enabled": Device or resource busy However it is also possible to hook regardless of kernel version and instad of returning -EBUSY like for newer kernels when using FTRACE_OPS_FL_PERMANENT, return 0 and do nothing which is something to consider for later.
Example: # cat /proc/sys/kernel/ftrace_enabled 1 # echo 0 > /proc/sys/kernel/ftrace_enabled # cat /proc/sys/kernel/ftrace_enabled 0
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.