I just learned to use ftrace and perf and there are some stuff they are in common I don't understand--trace events. I guess they are some kernel internal functions, ftrace will record their name when they're called if they're enabled. Is that right? All the evens are sorted in groups listed below. Would someone tell me what they stand for or where I can get information about them in detail. thx.
Related Questions in LINUX-KERNEL
- Android kernel error: undefined reference to `get_hw_version_platform'
- Is there a need for BPF Linux namespace?
- Facing fatal errors while running "yum update" command on CentOS 7/Cloudlinux 7
- crash utility itself crashes while decoding kdump generated from null pointer dereference in kernel module
- How to compile the Linux kernel with -O0 for more detailed debug?
- Linux support for parallel Pixel data Image sensor
- Can't upgrade to newest version of linux-image-6.5.0-26-generic
- How to protect a page so that it cannot be write in mips arch?
- How to extract the .img file into normal kernel source file in the linux?
- Storage size of struct hash_desc desc; isn't known
- How can I intercept failed file openning calls?
- struct nameidata-Linux Kernel Module
- How to modify a 'struct msghdr' in Linux Kernel Module?
- How to allocate 500MB+ physically contiguous memory in a Linux kernel module and copy data to that memory from a userspace process?
- Hyper Threading: nosmt in grub configuration
Related Questions in PERF
- Linux perf does not record function in libstdc++.so correctly
- perf -- record cache misses at thread level granularity
- x86/Linux multithreading: perf report children percentage sum does not match the parent percentage
- Is there a way to parse data generated by perf tool?
- How to measure execution time of all functions in a process using perf?
- linux perf: x86: is the cache-misses event accuracy in per-process counting?
- I cannot use perf in ubuntu2204 kernel6.6.17 with trying the solution most people meet
- perf stat -p pid does not work with PMU events
- Using perf inside podman container
- What does the event `stall_slot_backend` represent?
- Perf power consumption for a multi-socket system
- Perf and kallsyms in a GKE Ephemeral container
- Perf shows userspace cycles for cores which shouldn't be executing instructions
- Frequent Cache misses for loading data and accumulating Elements of std vector
- perf_event_open() always get zero when specifying CPU ID
Related Questions in FTRACE
- why does mcount require frame pointer information?
- Linux FTRACE function_graph process context
- ftrace into serial console during reboot
- File is cleared after preventing writing to it by hooking sys_write
- How to benchmark a C program
- Multi program use ftrace to hook same kernel function in same machine
- trace-cmd & ftrace: print only trace_printk output
- Systrace: When I open the systrace, I found that the information of SurfaceFlinger is not full，I just see a few information shown
- Using ftrace on Samsung smartphone
- How to use ftrace to print partial function trace?
- It is possible to grab process memory using ftrace?
- How to configure Ftrace on kernel 5.15.0-56-generic (ubuntu 22.04)?
- How can I use ftrace filtering to see the call stack above a function?
- What does the field irq indicate in the kvm_inj_virq event?
- How can I parse the output of trace-cmd report using awk?
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Each of those is the name of the code in the linux kernel which printed the log message. For example, rcu is the lockless list code. It stands for Read Copy Update. The names will roughly match up with names of files or directories in the kernel source. Look in the Documentation directory of the kernel source for more information.