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vfscount.bt
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#!/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(); }