locking/lockdep: Report more stack trace statistics

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Report the number of stack traces and the number of stack trace hash
chains. These two numbers are useful because these allow to estimate
the number of stack trace hash collisions.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/r/20190722182443.216015-5-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Bart Van Assche 2019-07-22 11:24:43 -07:00 • committed by Ingo Molnar

parent 12593b7467

commit 8c779229d0

3 changed files with 39 additions and 0 deletions

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29

kernel/locking/lockdep.c

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4

kernel/locking/lockdep_internals.h

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6

kernel/locking/lockdep_proc.c

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