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DebugFS — The Linux Kernel documentation
https://www.kernel.org/doc/html/latest/filesystems/debugfs.html
Debugging the Linux Kernel with debugfs - Open Source …
https://www.opensourceforu.com/2010/10/debugging-linux-kernel-with-debugfs/
How do I get rid of /sys/kernel/debug/tracing? - Ask Ubuntu
https://askubuntu.com/questions/847962/how-do-i-get-rid-of-sys-kernel-debug-tracing
debugfs on /sys/kernel/debug type debugfs (rw,relatime) I rebooted my kernel 4.4.0-47 to 4.4.0-45 then to 4.8.5 and finally to 3.13.0-92. ALL these versions have /sys/kernel/debug mounted. To answer your question (paraphrased) "how did this happen?" -> it happens to everyone. Question 2: How do I get rid of it?
Kernel Tracing with ftrace, Part 1 - Open Source For You
https://www.opensourceforu.com/2010/11/kernel-tracing-with-ftrace-part-1/
debugfs should have been mounted on /sys/kernel/debugfs, and if tracing is enabled, you should be able to see a directory called tracing under debugfs. If debugfs is not mounted, you can issue the following command: # mount -t debugfs nodev /sys/kernel/debug
Kernel Tracing with Ftrace - Selectel Blog
https://blog.selectel.com/kernel-tracing-ftrace/
Tracing the Linux kernel with ftrace - #embeddedbits
https://embeddedbits.org/tracing-the-linux-kernel-with-ftrace/
Ftrace stands for function tracer and basically lets you watch and record the execution flow of kernel functions. It was created by Steven Rostedt, derived from two other tools called latency tracer from Ingo Molnar and Steven’s logdev utility. With ftrace you can really see what the …
Why does permission on "/sys/kernel/debug/tracing" …
https://access.redhat.com/solutions/5914171
For backward compatibility when mounting the debugfs file system, the tracefs file system will be automatically mounted at /sys/kernel/debug/tracing. All files located in the tracefs file system will be located in that debugfs file system directory as …
Linux Tracing Technologies — The Linux Kernel …
https://www.kernel.org/doc/html/latest/trace/index.html
Using the Linux Kernel Tracepoints Purpose of tracepoints Usage Event Tracing 1. Introduction 2. Using Event Tracing 3. Defining an event-enabled tracepoint 4. Event formats 5. Event filtering 6. Event triggers 7. In-kernel trace event API Subsystem Trace Points: kmem 1. Slab allocation of small objects of unknown type 2.
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