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SubjectRe: [PATCH tip/core/rcu 22/55] rcu: Add grace-period, quiescent-state, and call_rcu trace events
On Sun, Oct 16, 2011 at 06:33:53PM -0700, Josh Triplett wrote:
> On Tue, Sep 06, 2011 at 11:00:16AM -0700, Paul E. McKenney wrote:
> > From: Paul E. McKenney <paul.mckenney@linaro.org>
> >
> > Add trace events to record grace-period start and end, quiescent states,
> > CPUs noticing grace-period start and end, grace-period initialization,
> > call_rcu() invocation, tasks blocking in RCU read-side critical sections,
> > tasks exiting those same critical sections, force_quiescent_state()
> > detection of dyntick-idle and offline CPUs, CPUs entering and leaving
> > dyntick-idle mode (except from NMIs), CPUs coming online and going
> > offline, and CPUs being kicked for staying in dyntick-idle mode for too
> > long (as in many weeks, even on 32-bit systems).
> >
> > Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
> > Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> >
> > rcu: Add the rcu flavor to callback trace events
> >
> > The earlier trace events for registering RCU callbacks and for invoking
> > them did not include the RCU flavor (rcu_bh, rcu_preempt, or rcu_sched).
> > This commit adds the RCU flavor to those trace events.
> >
> > Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
>
> Did you intend for this commit message to contain two full commit
> messages, and three signoffs from you?

No, messed up a rebase. <red face>

> Also, the subject doesn't seem to cover the second half of the commit
> message.

This is indeed the first set of trace events where the name of the RCU
flavor was important.

Thanx, Paul



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