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From: Waiman Long <longman@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>, Will Deacon <will.deacon@arm.com>,
	Boqun Feng <boqun.feng@gmail.com>
Cc: linux-kernel@vger.kernel.org, Waiman Long <longman@redhat.com>
Subject: [PATCH v2 0/2] locking/lockdep: Disable KASAN instrumentation of lockdep.c
Date: Tue,  4 Feb 2025 20:24:09 -0500	[thread overview]
Message-ID: <20250205012411.1010817-1-longman@redhat.com> (raw)

It is found that disabling KASAN instrumentation when compiling
lockdep.c can significantly improve the performance of RT debug kernel
while the performance benefit of non-RT debug kernel is relatively
modest.

This series also include a patch to add locking events to the rtmutex
slow paths for better analysis of the different performance behavior
between RT and non-RT debug kernels.

Waiman Long (2):
  locking/lock_events: Add locking events for rtmutex slow paths
  locking/lockdep: Disable KASAN instrumentation of lockdep.c

 kernel/locking/Makefile           |  3 ++-
 kernel/locking/lock_events_list.h | 21 +++++++++++++++++++++
 kernel/locking/rtmutex.c          | 29 ++++++++++++++++++++++++-----
 3 files changed, 47 insertions(+), 6 deletions(-)

-- 
2.48.1


             reply	other threads:[~2025-02-05  1:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-05  1:24 Waiman Long [this message]
2025-02-05  1:24 ` [PATCH v2 1/2] locking/lock_events: Add locking events for rtmutex slow paths Waiman Long
2025-02-05  1:24 ` [PATCH v2 2/2] locking/lockdep: Disable KASAN instrumentation of lockdep.c Waiman Long

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