I enabled ftrace event tracing for sys_enter_openat syscall. The respective output format given at events/syscalls/sys_enter_openat/format is print fmt: "dfd: 0x%08lx, filename: 0x%08lx, flags: 0...

For example, to monitor all mkdir calls made, the best I could come up with was: #!/bin/sh set -eux d=debug/tracing mkdir -p debug if ! mountpoint -q debug; then mount -t debugfs nodev debug fi...

What are the use-cases for using tracepoint events when kprobe events support for ftrace is available in Linux kernel? It seems everything that is possible to be done using 'tracepoint events' is p...

I am trying to use trace-cmd to gather more information about a kernel crash that I am seeing. Unfortunately, kernel crashes with "kernel panic - not syncing" message (i.e. socket and file buffers ...

I have been playing with ftrace recently to monitor some behavior characteristics of my system. I've been handling switching the trace on/off via a small script. After running the script, my system...

How do I use ftrace() (or anything else) to trace a specific, user-defined function in the Linux kernel? I'm trying to create and run some microbenchmarks, so I'd like to have the time it takes cer...

The goal is to examine arguments passed to specific system calls (e.g. exec, open, etc.) by any process. From the official documentation, no capability to log function arguments is described (look...

Apologies for the longish post, I'm having trouble formulating it in a shorter way. Also, maybe this is more appropriate for Unix & Linux Stack Exchange, but I'll try here at SO first, as there...

Android systrace tool, calls atrace tool via ADB. However, I don't understand very well the format of the traces file. Apparently it is very similar to linux ftrace tool with some differences. The ...

I want to trace a function during kernel boot process with ftrace function_graph to understand what it does, but it is not available in available_filter_functions. I tried to export it with EXPORT...

Performance counters for Linux are a new kernel-based subsystem that provide a framework for all things performance analysis. It covers hardware level (CPU/PMU, Performance Monitoring Unit) feature...

I just read that the 2.6.27 kernel has a new module called ftrace which sounds a lot like suns dtrace utility. I'm having some trouble googling for documentation, I was wondering if anyone else had...