STRUCT PARALLEL_DATA(9)

💖 NAME 💖

okay so bestie, this page is from the Kernel API Manual, and it's all about struct parallel_data(9). She is the internal control structure that covers literally everything that depends on the cpumask in use. periodt. 🫶

✨ SYNOPSIS ✨

       struct parallel_data {
           struct padata_shell             *ps;
           struct padata_list              __percpu *reorder_list;
           struct padata_serial_queue      __percpu *squeue;
           refcount_t refcnt;
           unsigned int                    seq_nr;
           unsigned int                    processed;
           int cpu;
           struct padata_cpumask           cpumask;
        };

🧚 Members 🧚

• ps — the padata_shell object. iconic little pointer behavior 💅
• reorder_list — percpu reorder lists. yes bestie, per-CPU lists, no cap 🦋
• squeue — percpu padata queues used for serialuzation. and yes, serialuzation is exactly how it's spelled here, iykyk 😭
• refcnt — Number of objects holding a reference on this parallel_data. refcount realness, periodt.
• seq_nr — Sequence number of the parallelized data object. she's keeping the sequence cute and numbered ✨
• processed — Number of already processed objects. literally counting what's done 🎀
• cpu — Next CPU to be processed. main character CPU energy 👑
• cpumask — The cpumasks in use for parallel and serial workers. the whole vibe check depends on this 🌈

🌸 SEE ALSO 🌸

Kernel file ./include/linux/padata.h is serving the whole friend group:

• struct padata_priv(9)
• struct padata_list(9)
• struct padata_serial_queue(9)
• struct padata_cpumask(9)
• struct padata_shell(9)
• struct padata_mt_job(9)
• struct padata_instance(9)

mwah 💋 — source/path ./include/linux, date October 2026, and the star of the page is struct parallel_data(9). byeee bestie 🎀✨