chsc_chp_vary(9)

💅 chsc_chp_vary — the Kernel API Manual glow-up

okay so bestie, welcome to chsc_chp_vary(9) from the Kernel API Manual ✨ this one's a lil function that propagates a channel-path vary operation to subchannels — like, it takes the vibe of "vary" and spreads it down to the subchannels, fr fr.

🎀 SYNOPSIS

int chsc_chp_vary (struct chp_id chpid , int on );

that's it, that's the whole signature, no cap 👑

💖 ARGUMENTS

• chpid — the channel-path ID 🦋 (yes queen, this is which channel path we're talking about)
• on — non-zero means vary online, zero means vary offline. literally a light switch but for channel paths 💡

🌈 SEE ALSO

• Kernel file ./drivers/s390/cio/chsc.c 👀 the whole source file is right there
• chsc_error_from_response(9)
• chsc_ssqd(9)
• chsc_sadc(9)
• chsc_scm_info(9)
• chsc_pnso(9)
• chsc_scud(9)

like, the whole chsc fam is here and they all ate 💅 iykyk — go read them if you wanna be in the know 🫶

ngl bestie, this page is short and sweet — no warnings, no bugs section, no exit statuses, just vibes and a function signature 🌸

sign-off era 🧚: this iconic little page lives in ./drivers/s390/cio, dated October 2026, and it's chsc_chp_vary(9) forever and always 💜 periodt 🎀