Method decrease_rss

tee/kernel/src/user/process/usage.rs:52–56

(&self, delta: usize)

    }

    pub fn decrease_rss(&self, delta: usize) {
        let delta = u64::from_usize(delta);
        let prev = self.rss.fetch_sub(delta, Ordering::Relaxed);
        debug_assert!(prev >= delta);
    }

    pub fn rss(&self) -> u64 {
        self.rss.load(Ordering::Relaxed)