LIBPFM(3)

📦 version 4.13.0+git106-g3e4031b, in debian trixie, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 NAME 💖

ok so bestie, this is libpfm_arm_ac76 — literally the support page for the Arm Cortex A76 PMU. that's it, that's the whole vibe. it's part of the LIBPFM(3) manual, and she's a whole queen.

✨ SYNOPSIS ✨

first thing, you gotta pull in the header, no cap:

#include <perfmon/pfmlib.h>

then the two things you actually came here for:

  • PMU name: arm_ac76
  • PMU desc: ARM Cortex A76

🌸 DESCRIPTION 🌸

the library supports the ARM Cortex A76 core PMU. periodt. 💅

this PMU is lowkey stacked — she supports 6 counters and privilege levels filtering, so you can slice your measurements by privilege level if that's your thing. and she's flexible fr fr: she can operate in both 32 and 64 bit modes. main character energy honestly. 👑

🎀 MODIFIERS 🎀

here's the modifier lineup for ARM Cortex A76. all three of these are boolean modifiers, so it's giving yes/no, on/off, slay/not-slay:

  • u — measure at the user level. this corresponds to PFM_PLM3. boolean modifier.
  • k — measure at the kernel level. this corresponds to PFM_PLM0. boolean modifier.
  • hv — measure at the hypervisor level. this corresponds to PFM_PLMH. boolean modifier.
ok bestie, quick vibe check: these are booleans, meaning you either turn them on or you don't. no in-between, no maybe. 🦋

👑 AUTHORS 👑

this iconic work was brought to you by:

  • Stephane Eranian <eranian@gmail.com>

and that's the whole page, bestie 🫶 tysm for reading. this was the LIBPFM(3) page from the Linux Programmer's Manual, dated September, 2024. go measure something iconic. 💜✨

📦 where this page comes from