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#!/usr/bin/env bpftrace
/*
 * swapin - Show swapins by process.
 *
 * See BPF Performance Tools, Chapter 7, for an explanation of this tool.
 *
 * Copyright (c) 2019 Brendan Gregg.
 * Licensed under the Apache License, Version 2.0 (the "License").
 * This was originally created for the BPF Performance Tools book
 * published by Addison Wesley. ISBN-13: 9780136554820
 * When copying or porting, include this comment.
 *
 * 26-Jan-2019  Brendan Gregg   Created this.
 */

kprobe:swap_readpage
{
        @[comm, pid] = count();
}

interval:s:1
{
        time();
        print(@);
        clear(@);
}