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From: Alexei Starovoitov <ast@kernel.org>
To: <davem@davemloft.net>
Cc: <daniel@iogearbox.net>, <netdev@vger.kernel.org>,
	<bpf@vger.kernel.org>, <kernel-team@fb.com>
Subject: [PATCH v2 bpf-next 0/3] bpf: optimize explored_states
Date: Tue, 21 May 2019 20:17:04 -0700
Message-ID: <20190522031707.2834254-1-ast@kernel.org> (raw)

Convert explored_states array into hash table and use simple hash to
reduce verifier peak memory consumption for programs with bpf2bpf calls.
More details in patch 3.

v1->v2: fixed Jakub's small nit in patch 1

Alexei Starovoitov (3):
  bpf: cleanup explored_states
  bpf: split explored_states
  bpf: convert explored_states to hash table

 include/linux/bpf_verifier.h |  2 +
 kernel/bpf/verifier.c        | 77 ++++++++++++++++++++++--------------
 2 files changed, 50 insertions(+), 29 deletions(-)


             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22  3:17 Alexei Starovoitov [this message]
2019-05-22  3:17 ` [PATCH v2 bpf-next 1/3] bpf: cleanup explored_states Alexei Starovoitov
2019-05-22  3:17 ` [PATCH v2 bpf-next 2/3] bpf: split explored_states Alexei Starovoitov
2019-05-22  3:17 ` [PATCH v2 bpf-next 3/3] bpf: convert explored_states to hash table Alexei Starovoitov
2019-05-22  5:54 ` [PATCH v2 bpf-next 0/3] bpf: optimize explored_states Andrii Nakryiko
2019-05-24  8:05 ` Daniel Borkmann

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