vfscount.bt

#!/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();
}