linux-kernel - [PATCH v2 0/3] some improvements for lockdep

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Date:   Fri, 18 Jun 2021 22:55:31 +0800
From:   Xiongwei Song <sxwjean@...com>
To:     peterz@...radead.org, mingo@...hat.com, will@...nel.org,
        longman@...hat.com, boqun.feng@...il.com
Cc:     linux-kernel@...r.kernel.org, Xiongwei Song <sxwjean@...il.com>
Subject: [PATCH v2 0/3] some improvements for lockdep

From: Xiongwei Song <sxwjean@...il.com>

Unlikely the checks of return values of graph walk will improve the
performance to some degree, patch 1 and patch 2 are for this.

The patch 3 will print a warning after counting lock deps when hitting
bfs errors.

v2:
* For patch 3, avoid to call lockdep_unlock() twice after counting deps.
  Please see https://lkml.org/lkml/2021/6/17/741. 

Xiongwei Song (3):
  locking/lockdep: Unlikely bfs_error() inside
  locking/lockdep: Unlikely conditons about BFS_RMATCH
  locking/lockdep: Print possible warning after counting deps

 kernel/locking/lockdep.c | 55 +++++++++++++++++++---------------------
 1 file changed, 26 insertions(+), 29 deletions(-)

-- 
2.30.2