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My first official Linux kernel patch

Well, that took some time. Quite an exacting process… which makes you get a new perspective of how Linux is made, and what it takes to keep loose collaboration at a high quality level. And interesting too how such a simple patch evolved. First it made me think of the bike shed …
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git mental model

Finally I managed to get a mental model of git that allows me to do everything without needing to google around. And this is a quick memory dump. There are other git cheatsheets, but this is mine.
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Modelo mental de git

Por fin conseguí hacerme un modelo mental de git que me permite hacer de todo sin necesidad de google ni esquemas ni Stack Overflow ;P. Y ésta es mi chuleta / "volcado de memoria". Parece que no hay muchas cosas así en español; a ver si le sirve a alguien. La idea era mantenerlo muy corto y al grano — como una chuleta, vaya. Asumo que sabes de qué va en general git y qué son cosas como un puntero y una lista simplemente enlazada. Si hay interés lo expandiré en algo más "tutorial".
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6 tips to survive Codility tests

Well, it happened. When applying for a job, I got sent to a Codility test. And even though I already had some good practice with them, I managed to do badly in stupid ways – ways that 2 years ago I had already identified and even taken notes on. Just, in the heat of the moment I forgot about those rules of thumb. And in fact I think these hints should be given by Codility themselves – because otherwise you are practically ambushed, even more so if you didn't take the time to thoroughly explore how they work. So here are my hints-to-self, now for everyone. The summary is: don't think of Codility as a coding interview; this is primarily about getting something (anything!) working, ASAP.
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Swapping bottom left and right panes (content and patch summary/file tree) in gitk

Gitk (as of git 2.4.2) has its bottom left and right panes the other way round to what I like: the bottom right shows the file tree or the patch summary, while the bottom left shows the contents of what is selected on the right. Isn't that kinda non-standard? There is no official way to swap those panes, so here's a little hacky patch to do it.
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