On Thu, Feb 13, 2025 at 03:02:24PM -0500, Waiman Long wrote:
> v3:
> - Add another patch to insert lock events into lockdep.c.
> - Rerun all the tests with the simpler defconfig kernel build and do
> further analysis of the of the performance difference between the
> the RT and non-RT debug kernels.
>
> v4:
> - Update test results in patch 3 after incorporating CONFIG_KASAN_INLINE
> into the test matrix.
> - Add patch 4 to call kasan_check_byte() in lock_acquire.
>
> 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 patches to add locking events to the rtmutex
> slow paths and the lockdep code for better analysis of the different
> performance behavior between RT and non-RT debug kernels.
>
Thank you, and thank Marco and Andrey for the reviews. Queued for v6.15.
Regards,
Boqun
> Waiman Long (4):
> locking/lock_events: Add locking events for rtmutex slow paths
> locking/lock_events: Add locking events for lockdep
> locking/lockdep: Disable KASAN instrumentation of lockdep.c
> locking/lockdep: Add kasan_check_byte() check in lock_acquire()
>
> kernel/locking/Makefile | 3 ++-
> kernel/locking/lock_events_list.h | 29 +++++++++++++++++++++++++++++
> kernel/locking/lockdep.c | 22 +++++++++++++++++++++-
> kernel/locking/rtmutex.c | 29 ++++++++++++++++++++++++-----
> 4 files changed, 76 insertions(+), 7 deletions(-)
>
> --
> 2.48.1
>