dev_pm_opp_set_sharing_cpus(9)

💅 dev_pm_opp_set_sharing_cpus(9) — Kernel API Manual, but make it make sense

okay bestie, welcome to the group chat that is the Linux kernel API docs 🫶 this one lives in the Kernel API Manual, and no cap, it's a tiny function that does one very specific little job. let's get into it ✨

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✨ NAME ✨

dev_pm_opp_set_sharing_cpus — mark an OPP table as shared by a few CPUs 👑

like, "hey kernel, this here OPP table? it's not just for one CPU, it's a whole friend-group situation." literally that's the whole gig 🎀

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🌸 SYNOPSIS 🌸

int dev_pm_opp_set_sharing_cpus (struct device *cpu_dev , const struct
       cpumask *cpumask );

she takes two arguments and returns an int, that's it, that's the vibe 💅

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🦋 ARGUMENTS 🦋

• cpu_dev — the CPU device we're doing this whole operation for 🖥️ like, the main character of this call, ngl
• cpumask — the cpumask of the CPUs that share the OPP table with cpu_dev 💖 so it's the guest list of who else gets to be in this OPP table's inner circle

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⭐ DESCRIPTION ⭐

so here's the tea ☕ this function marks the OPP table of cpu_dev as shared by the CPUs present in cpumask. that's it, that's the whole description, she's short and iconic 💅

and now for the part you actually need to remember, bestie, because this is the plot twist 😭:

returns -ENODEV if the OPP table isn't already present. like, the OPP table has to exist first — you can't mark a vibe as shared if there's no vibe to share. fr fr.

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🔥 SEE ALSO 🔥

click through the lore, bestie, it's all connected 🧚

• Kernel file ./drivers/opp/cpu.c — that's where she lives 🏠
• dev_pm_opp_init_cpufreq_table(9)
• dev_pm_opp_free_cpufreq_table(9)
• dev_pm_opp_cpumask_remove_table(9)
• dev_pm_opp_get_sharing_cpus(9)

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🎀 the cute sign-off 🎀

this little slice of kernel wisdom comes to you from ./drivers/opp, dated October 2026, and it's all wrapped up in this very manual page titled dev_pm_opp_set_sharing_cpus(9). go forth and share your OPP tables responsibly, bestie, ily, mwah 💜🌸✨