#!/usr/bin/env bpftrace
/*
* vfscount Count VFS calls ("vfs_*").
* For Linux, uses bpftrace and eBPF.
*
* Written as a basic example of counting kernel functions.
*
* USAGE: vfscount.bt
*
* This is a bpftrace version of the bcc tool of the same name.
*
* Copyright 2018 Netflix, Inc.
* Licensed under the Apache License, Version 2.0 (the "License")
*
* 06-Sep-2018 Brendan Gregg Created this.
*/
BEGIN
{
printf("Tracing VFS calls... Hit Ctrl-C to end.\n");
}
kprobe:vfs_*
{
@[func] = count();
}
Mini Shell