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* [PATCH tip/core/rcu 0/6] Track callbacks on a per-segment basis
@ 2021-01-06  1:25 Paul E. McKenney
  2021-01-06  1:26 ` [PATCH tip/core/rcu 1/6] rcu/tree: Make rcu_do_batch count how many callbacks were executed paulmck
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: Paul E. McKenney @ 2021-01-06  1:25 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel

Hello!

This series adds counts to the rcu_segcblist structure that track the
number of callbacks in each segment, allowing RCU to distinguish between
(for example) a need to get grace periods done or get callbacks invoked
(or, for that matter, both).

1.	Make rcu_do_batch count how many callbacks were executed,
	courtesy of "Joel Fernandes (Google)".

2.	Add additional comments to explain smp_mb(), courtesy of "Joel
	Fernandes (Google)".

3.	Add counters to segcblist datastructure, courtesy of "Joel
	Fernandes (Google)".

4.	segcblist: Remove redundant smp_mb()s, courtesy of "Joel Fernandes
	(Google)".

5.	Add tracing for how segcb list changes, courtesy of "Joel
	Fernandes (Google)".

6.	Add debug checks for segment lengths, courtesy of "Joel Fernandes
	(Google)".

						Thanx, Paul

------------------------------------------------------------------------

 include/linux/rcu_segcblist.h |    1 
 include/trace/events/rcu.h    |   26 +++++
 kernel/rcu/rcu_segcblist.c    |  203 +++++++++++++++++++++++++++++++-----------
 kernel/rcu/rcu_segcblist.h    |    6 -
 kernel/rcu/srcutree.c         |    5 -
 kernel/rcu/tree.c             |   29 ++++--
 6 files changed, 209 insertions(+), 61 deletions(-)

^ permalink raw reply	[flat|nested] 7+ messages in thread

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Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-06  1:25 [PATCH tip/core/rcu 0/6] Track callbacks on a per-segment basis Paul E. McKenney
2021-01-06  1:26 ` [PATCH tip/core/rcu 1/6] rcu/tree: Make rcu_do_batch count how many callbacks were executed paulmck
2021-01-06  1:26 ` [PATCH tip/core/rcu 2/6] rcu/segcblist: Add additional comments to explain smp_mb() paulmck
2021-01-06  1:26 ` [PATCH tip/core/rcu 3/6] rcu/segcblist: Add counters to segcblist datastructure paulmck
2021-01-06  1:26 ` [PATCH tip/core/rcu 4/6] rcu/tree: segcblist: Remove redundant smp_mb()s paulmck
2021-01-06  1:26 ` [PATCH tip/core/rcu 5/6] rcu/trace: Add tracing for how segcb list changes paulmck
2021-01-06  1:26 ` [PATCH tip/core/rcu 6/6] rcu/segcblist: Add debug checks for segment lengths paulmck

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