PR_TASK_PERF_EVENTS_DISABLE(2const)

💅 PR_TASK_PERF_EVENTS_DISABLE(2const) — no cap, the vibes are counter-intuitive

okay bestie, sit down, hydrate, because we're talking about prctl(2) constants from linux/prctl.h — specifically the two little gremlins that turn performance counters on and off for the process that's calling them. It's PR_TASK_PERF_EVENTS_DISABLE(2const) energy and it's lowkey iconic. 🎀

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✨ NAME ✨

PR_TASK_PERF_EVENTS_DISABLE, PR_TASK_PERF_EVENTS_ENABLE — disable or enable performance counters attached to the calling process. 🦋

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📚 LIBRARY 📚

Standard C library (libc, -lc). bestie you already have it, it's giving standard library realness. 💖

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🫶 SYNOPSIS 🫶

#include <linux/prctl.h>  /* Definition of PR_* constants */
#include <sys/prctl.h>

int prctl(PR_TASK_PERF_EVENTS_DISABLE);
int prctl(PR_TASK_PERF_EVENTS_ENABLE);

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🌸 DESCRIPTION 🌸

PR_TASK_PERF_EVENTS_DISABLE

This one goes ✋ stop ✋ to all performance counters attached to the calling process — literally all of them, and it does NOT care whether those counters were created by this process or by some other process. Not picky. Not judging. Not filtering. 👑

but wait, the plot twist: performance counters that the calling process created for other processes? Those are totally unaffected. Those are doing their own thing, living their own life, main character energy elsewhere. 🙈

PR_TASK_PERF_EVENTS_ENABLE

The converse of PR_TASK_PERF_EVENTS_DISABLE — it enables performance counters attached to the calling process. That's it. That's the whole thing. Turn it back on. Slay. ✨

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🔥 RETURN VALUE 🔥

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error. classic. 💀

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👑 STANDARDS 👑

Linux. (just Linux. it's giving Linux exclusive, periodt. 💅)

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⭐ HISTORY ⭐

Linux 2.6.31. 🦋

Originally called PR_TASK_PERF_COUNTERS_DISABLE and PR_TASK_PERF_COUNTERS_ENABLE; renamed (retaining the same numerical value) in Linux 2.6.32. So yeah, the glow-up was real — same value, cuter names. not me being obsessed with a rename that keeps the number the same 😭

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🌈 SEE ALSO 🌈

• prctl(2)

For more information on performance counters, see the Linux kernel source file tools/perf/design.txt. 📂 go read it bestie, iykyk

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okay that's the whole page, you ate it, no crumbs left 💖✨🥳

this cutie was brought to you by Linux man-pages 6.20, dated 2026-02-0, and the letter "p" for prctl. mwah. 💋🎀