JoelFernandes.org

Age is of no importance unless you're a cheese -- Billie Burke

Blog posts by category.
Archive of all blog posts.
Presentations and other work.

Hello! I’m Joel and this my personal website built with Jekyll! I currently work at Google. My interests are scheduler, RCU, tracing, synchronization, memory models and other kernel internals. I also love contributing to the upstream Linux kernel and other open source projects.

Connect with me on Twitter, and LinkedIn. Or, drop me an email at: joel at joelfernandes dot org

Look for my name in the kernel git log to find my upstream kernel patches. Check out my resume for full details of my work experience. I also actively present at conferences, see a list of my past talks, presentations and publications.

Full list of all blog posts on this site:
  • 25 Jun 2023   SVM and vectors for the curious
  • 10 Jun 2023   SELinux Debugging on ChromeOS
  • 28 Apr 2023   Understanding Hazard Pointers
  • 25 Apr 2023   PowerPC stack guard false positives in Linux kernel
  • 24 Feb 2023   Getting YouCompleteMe working for kernel development
  • 29 Jan 2023   Figuring out herd7 memory models
  • 13 Nov 2022   On workings of hrtimer's slack time functionality
  • 25 Oct 2020   C++ rvalue references
  • 06 Mar 2020   SRCU state double scan
  • 18 Oct 2019   Modeling (lack of) store ordering using PlusCal - and a wishlist
  • 02 Sep 2019   Making sense of scheduler deadlocks in RCU
  • 23 Dec 2018   Dumping User and Kernel stacks on Kernel events
  • 15 Jun 2018   RCU and dynticks-idle mode
  • 10 Jun 2018   Single-stepping the kernel's C code
  • 10 May 2018   RCU-preempt: What happens on a context switch
  • 11 Feb 2018   USDT for reliable Userspace event tracing
  • 08 Jan 2018   BPFd- Running BCC tools remotely across systems
  • 01 Jan 2017   ARMv8: flamegraph and NMI support
  • 19 Jun 2016   Ftrace events mechanism
  • 20 Mar 2016   TIF_NEED_RESCHED: why is it needed
  • 25 Dec 2015   Tying 2 voltage sources/signals together
  • 04 Jun 2014   MicroSD card remote switch
  • 08 May 2014   Linux Spinlock Internals
  • 25 Apr 2014   Studying cache-line sharing effects on SMP systems
  • 23 Apr 2014   Design of fork followed by exec in Linux