Function create_core_scheduling_cookie

src/thread/prctl.rs:1075–1086

(pid: Pid, scope: CoreSchedulingScope)

/// [`prctl(PR_SCHED_CORE,PR_SCHED_CORE_CREATE,…)`]: https://www.kernel.org/doc/html/v6.13/admin-guide/hw-vuln/core-scheduling.html
#[inline]
pub fn create_core_scheduling_cookie(pid: Pid, scope: CoreSchedulingScope) -> io::Result<()> {
    unsafe {
        syscalls::prctl(
            PR_SCHED_CORE,
            PR_SCHED_CORE_CREATE as *mut _,
            pid.as_raw_nonzero().get() as usize as *mut _,
            scope as usize as *mut _,
            ptr::null_mut(),
        )
        .map(|_r| ())
    }
}

const PR_SCHED_CORE_SHARE_TO: usize = 2;