linux-kernel - Re: [PATCH net-next 1/3] samples/bpf: add bpf map stress test

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Message-Id: <20160308.232213.1624474136438943765.davem@davemloft.net>
Date:	Tue, 08 Mar 2016 23:22:13 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	ast@...com
Cc:	daniel@...earbox.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH net-next 1/3] samples/bpf: add bpf map stress test

From: Alexei Starovoitov <ast@...com>
Date: Tue, 8 Mar 2016 15:07:52 -0800

> this test calls bpf programs from different contexts:
> from inside of slub, from rcu, from pretty much everywhere,
> since it kprobes all spin_lock functions.
> It stresses the bpf hash and percpu map pre-allocation,
> deallocation logic and call_rcu mechanisms.
> User space part adding more stress by walking and deleting map elements.
> 
> Note that due to nature bpf_load.c the earlier kprobe+bpf programs are
> already active while loader loads new programs, creates new kprobes and
> attaches them.
> 
> Signed-off-by: Alexei Starovoitov <ast@...nel.org>

Applied.