STRUCT PS3_LPM_PRIV(9)

🌸 NAME 🌸

hiii bestie 💖 this is the page for struct ps3_lpm_priv(9) from the Kernel API Manual, and she is literally the private lpm device data struct. Private lpm device data. no cap.

🦋 SYNOPSIS 🦋

struct ps3_lpm_priv {
    atomic_t open;
    u64 rights;
    u64 node_id;
    u64 pu_id;
    u64 lpm_id;
    u64 outlet_id;
    u64 tb_count;
    void *tb_cache;
    u64 tb_cache_size;
    void *tb_cache_internal;
    struct ps3_lpm_shadow_regs shadow;
    struct ps3_system_bus_device *sbd;
 };

👑 Members 👑

• open — an atomic_t variable that tells you the lpm driver has been opened. honestly iconic little open/closed vibe check ✨
• rights — the lpm rights granted by the system policy module. it's a logical OR of enum ps3_lpm_rights 🔥
• node_id — the node id of a BE processor whose performance monitor this lpar has the right to use. she's got permission, periodt.
• pu_id — the lv1 id of the logical PU.
• lpm_id — the lv1 id of this lpm instance.
• outlet_id — the outlet created by lv1 for this lpm instance.
• tb_count — the number of bytes of data held in the lv1 trace buffer. literally counting the bytes 💅
• tb_cache — kernel buffer to receive the data from the lv1 trace buffer. must be 128 byte aligned. yes, alignment matters, bestie.
• tb_cache_size — size of the kernel tb_cache buffer. must be 128 byte aligned too 🎀
• tb_cache_internal — an unaligned buffer allocated by this driver to be used for the trace buffer cache when ps3_lpm_open is called with a NULL tb_cache argument. otherwise unused. she's on standby 🦋
• shadow — processor register shadow of type struct ps3_lpm_shadow_regs.
• sbd — the struct ps3_system_bus_device attached to this driver.

✨ DESCRIPTION ✨

okay so, the trace buffer is a buffer that gets allocated and used internally to the lv1 hypervisor to collect trace data.

the trace buffer cache is a guest buffer whose whole job is accepting the trace data from the trace buffer. that's the tea ☕💅

🔮 SEE ALSO 🔮

bestie, go peek at the kernel file ./drivers/ps3/ps3-lpm.c and then these absolute icons:

• struct ps3_lpm_shadow_regs(9)
• ps3_read_phys_ctr(9)
• ps3_write_phys_ctr(9)
• ps3_read_ctr(9)
• ps3_write_ctr(9)
• ps3_read_pm07_control(9)
• ps3_write_pm07_control(9)
• ps3_read_pm(9)
• ps3_write_pm(9)
• ps3_get_ctr_size(9)
• ps3_set_ctr_size(9)
• ps3_enable_pm(9)
• ps3_disable_pm(9)
• ps3_lpm_copy_tb(9)
• ps3_lpm_copy_tb_to_user(9)
• ps3_get_and_clear_pm_interrupts(9)
• ps3_enable_pm_interrupts(9)
• ps3_lpm_open(9)
• ps3_lpm_close(9)

kisses from ./drivers/ps3 💋 dated October 2026, and this whole page is about struct ps3_lpm_priv(9) 🫶✨