linux-kernel - [PATCH v2 0/2] audit: syscall audit optimization (> +6% faster)

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Date:   Tue, 18 Apr 2023 11:09:17 +0000
From:   Eiichi Tsukata <eiichi.tsukata@...anix.com>
To:     paul@...l-moore.com, eparis@...hat.com,
        linux-kernel@...r.kernel.org, audit@...r.kernel.org
Cc:     Eiichi Tsukata <eiichi.tsukata@...anix.com>
Subject: [PATCH v2 0/2] audit: syscall audit optimization (> +6% faster)

This patchset is an optimization of auditd_test_task() function.
As is described in Patch 1, it improves the performance of syscall
auditing.

Benchmarks
==========

Run the following micro benchmarks:

  (1) dd:
    dd if=/dev/zero of=/dev/null bs=1 count=5M

  (2) UnixBench syscall:
    ./Run syscall -i 10 -c 1

With rule:

  -a never,exit -F arch=b64 -S uname

Results:

  (1) dd
    Base line    : 2.572 sec
    /w this patch: 2.418 sec (6.3% faster)

  (2) UnixBench syscall Index Score
    Base line    : 860
    /w this patch: 953 (10.8% faster)


This patchset consists of the following parts:

  Patch 1: add global auditd_pid to make auditd_test_task() faster
  Patch 2: cleanup: replace auditd_conn.pid with auditd_pid

v1 -> v2:
  - Use global auditd_pid intead of pid.is_auditd
  - Add UnixBench syscall benchmark

v1: https://lore.kernel.org/audit/20230414031325.82840-1-eiichi.tsukata@nutanix.com/

Eiichi Tsukata (2):
  audit: add global auditd_pid to make auditd_test_task() faster
  audit: replace auditd_conn.pid with auditd_pid

 kernel/audit.c | 61 +++++++++++++++++---------------------------------
 kernel/audit.h |  4 +++-
 2 files changed, 24 insertions(+), 41 deletions(-)

-- 
2.39.2