Posts
579
Following
105
Followers
118
A relatively new professional kernel hacker, born in August 6, 2000, and living in Korea (South!).

- Linux Kernel Developer @ Oracle (Linux Kernel MM) (2025.02 ~ Present)
- Reviewer for the Linux Slab & Reverse Mapping subsystem
- Former Intern @ NVIDIA, SK Hynix, Panmnesia (Security, MM and CXL)
- B.Sc. in Computer Science & Engineering, Chungnam National University (Class of 2025)

Opinions are my own.

My interests are:
Memory Management,
Computer Architecture,
Circuit Design,
Virtualization
hyeyoo
repeated
vbabka@mastodon.social

Vlastimil Babka 🇨🇿🇪🇺🇺🇦

With the current RAM prices, let me remind you of my solution from 2017 that unfortunately wasn't merged, but maybe it's time to revisit it? https://lore.kernel.org/all/20170401211813.15146-1-vbabka@suse.cz/

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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @hyeyoo
Edited yesterday
@vbabka if the RAM prices get back to normal, you should probably revisit this and use your time to maintain other more useful features

https://lore.kernel.org/all/20230401094658.11146-1-vbabka@suse.cz
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka@mastodon.social
Edited yesterday
@vbabka

lol right after reading the first two paragraphs I was tempted to check when the email is sent
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka@mastodon.social
Edited 5 days ago
@vbabka

Sorry, I should have fixed kvfree_rcu_barrier() regression earlier so that you don't miss a hotfix PR during the final rc!
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hyeyoo
repeated
phoronix@masto.ai

Phoronix

Linux 6.19 Goes Ahead And Enables Microsoft C Extensions Support

Last month I reported on Linux 6.19 looking to enable Microsoft C Extensions support throughout the Linux kernel with setting the -fms-extensions compiler option to allow Microsoft C Extensions when building the kernel. Linus Torvalds today merged that support without objections...
https://www.phoronix.com/news/Linux-6.19-Enables-MS-Ext

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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @wagi@mastodon.social
@wagi someone acquired the lock in the opposite order!
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @david
Edited 18 days ago
@david @ljs @vbabka

if that's the case congrats I guess, more freedom for you!
**checks MAINTAINERS file**
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
@ljs @vbabka

with great massage and coffee brewing skills!
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @david
@david haha no problem, glad to see you here :)
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
Edited 18 days ago
@ljs @vbabka

I think I had a similar experience myself in the past...on the 'junior dev' side lol
Now I try to do something reasonable instead of "amazing" new stuff
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
@ljs @vbabka

lol yeah it's random moaning
looks like I'm not even qualified to moan!
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka@mastodon.social
@vbabka @ljs

right, at this stage the only way to make it to a commit is review and write a bugfix for them!
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
Edited 18 days ago
@ljs

when I was a hobbyist I wanted to add fancy new amazing features to the kernel. now I realize that, at work, I spend moooost of my time reviewing and discussing things, and fixing bugs!

**checks how many patches I better review until the next merge window comes**
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 19 days ago
vibe-coded script for GCOV coverage visualization!
Hope this is helpful when I'm testing something or reviewing complicated code
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
@ljs

AI generates the code in a minute, and a human spends hours reviewing it. What a wonderful work environment, innit!
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hyeyoo
repeated
Wuzzy@cyberplace.social

Wuzzy

New TLDs just dropped:

🌐 .com: community (discussion board)
🌐 .org: oranges, or the color orange, or both
🌐 .net: everything about nets EXCEPT computer networks
🌐 .gov: Grand ObserVatory. Astronomy-related
🌐 .mil: Moms in Love. Lesbian-friendly place
🌐 .int: Integers. Everything about one number, for example: 25.int
🌐 .edu: Ethylene diurea (an organic compund)

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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs@mastodonapp.uk
@ljs @vbabka
Here you go, two cups of coffee for you guys! Guess which one has…. *checks note* a secret ingredient!
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka@mastodon.social
@vbabka can I claim a mug for this? haha
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hyeyoo
repeated
vbabka@mastodon.social

Vlastimil Babka 🇨🇿🇪🇺🇺🇦

RE: https://mastodon.social/@workchronicles/115534588198704665

This is how I present the lkp perf improvement reports for my patches, yeah.

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hyeyoo
repeated
vbabka@mastodon.social

Vlastimil Babka 🇨🇿🇪🇺🇺🇦

Reply to @vbabka@mastodon.social
Edited 27 days ago

in other news, thanks to @hyeyoo 's intervention, slab memory efficiency increased by 82GB yesterday!

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