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authorWaiman Long <[email protected]>2018-04-26 11:34:27 +0100
committerIngo Molnar <[email protected]>2018-04-27 09:48:53 +0200
commit81d3dc9a349b1e61d77106bbb05a6e6dd29b9d5e (patch)
tree448afcc709a1cdbce9b0af2df4f23418b04b5a76 /tools/perf/scripts/python/bin/stackcollapse-record
parentae75d9089ff7095d1d1a12c3cd86b21d3eaf3b15 (diff)
locking/qspinlock: Add stat tracking for pending vs. slowpath
Currently, the qspinlock_stat code tracks only statistical counts in the PV qspinlock code. However, it may also be useful to track the number of locking operations done via the pending code vs. the MCS lock queue slowpath for the non-PV case. The qspinlock stat code is modified to do that. The stat counter pv_lock_slowpath is renamed to lock_slowpath so that it can be used by both the PV and non-PV cases. Signed-off-by: Waiman Long <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Waiman Long <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
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