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This commits an initial version of the Memorizer tracing tool. It collects and outputs detailed data on the objects (traced from kmalloc/kmem_cache_alloc) and accesses, tracking the context of each event with respect to thread ID, program counter, and for allocations name of process. Signed-off-by: Nathan Dautenhahn <ndd@cis.upenn.edu>
Files: memorizer.py, test_memorizer.py Dependencies: In order to run the test_memorizer w/ linux test suite, you must wget the latest version from the ltp github repo and set it up. Ex: wget https://github.com/linux-test-project/ltp/releases/download/20170116/ltp-full-20170116.tar.bz2 tar xvfj ltp-full-20170116.tar.bz2 # cd into the untarred dir ./configure make sudo make install Good documentation / examples: http://ltp.sourceforge.net/documentation/how-to/ltp.php memorizer.py: accepts processes to run in quotes. Ex: python memorizer.py "ls" "mkdir dir" In order to run the script, you must have your user be in the memorizer group, which you should setup if not. How-to: sudo groupadd memorizer; sudo usermod -aG memorizer <user> You will be queried to enter your pw in order to set group permissions on the /sys/kernel/debug dirs which include ftrace and memorizer. test_memorizer.py: accepts either -e, -m, or -h flags. Ex: python test_memorizer.py -e *All modes will run the setup/cleanup checks to ensure all virtual nodes are being set correctly. -e: Runs ls, wget, and tar sequentially. -m: Runs the linux test suite and saves a human-readable log to /opt/ltp/results/ltp.log -h: runs both -e and -m As with the memorizer.py, you will need your user to be in the memorizer group. Additionally, you will be queried to enter your pw in order to set group permissions on the /opt/ltp dirs.