ps3_lpm_copy_tb_to_user(9)

💖 NAME

okay so we're in the Kernel API Manual, and today's main character is ps3_lpm_copy_tb_to_user(9) — official vibe: Copy data from the trace buffer to a user buffer. no cap, that's the whole name moment 💅

✨ SYNOPSIS

int ps3_lpm_copy_tb_to_user (unsigned long offset , void __user *buf ,
       unsigned long count , unsigned long *bytes_copied );

🎀 ARGUMENTS

• offset — Offset in bytes from the start of the trace buffer. literally where you're starting, bestie 📍
• buf — A __user copy destination. that's the user-side spot the data goes to 🫶
• count — Maximum count of bytes to copy. the upper limit, periodt ✨
• bytes_copied — Pointer to a variable that will receive the number of bytes copied to buf. it catches the actual byte count for you 🎀

🦋 DESCRIPTION

okay so here's the important bit: On error buf will contain any successfully copied trace buffer data, and bytes_copied will be set to the number of bytes successfully copied. that's the whole mood — even when things go sideways, the successfully copied trace buffer data is still in buf, and bytes_copied reflects the bytes that made it 😭💖

🌈 SEE ALSO

Kernel file ./drivers/ps3/ps3-lpm.c is the spot, and here's the whole friend group — not me listing every single one, because we keep all the lore 🫶:

• struct ps3_lpm_shadow_regs(9)
• struct ps3_lpm_priv(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_get_and_clear_pm_interrupts(9)
• ps3_enable_pm_interrupts(9)
• ps3_lpm_open(9)
• ps3_lpm_close(9)

mwah 💖 source/version: ./drivers/ps3 · date: October 2026 · page: ps3_lpm_copy_tb_to_user(9) — slay and goodbye, bestie 🫶🌸