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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-06-25 17:36:56 +0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-09-29 08:38:21 +0400 |
| commit | d4c08f2ac311a360230eef7e5395b0ec8d8f0670 (patch) | |
| tree | 06e425b8153e076fbe43b037cf4497ac50afddb7 /kernel/rcutiny.c | |
| parent | 965a002b4f1a458c5dcb334ec29f48a0046faa25 (diff) | |
| download | linux-d4c08f2ac311a360230eef7e5395b0ec8d8f0670.tar.xz | |
rcu: Add grace-period, quiescent-state, and call_rcu trace events
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>
Diffstat (limited to 'kernel/rcutiny.c')
| -rw-r--r-- | kernel/rcutiny.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c index c9321d86999b..da775c87f27f 100644 --- a/kernel/rcutiny.c +++ b/kernel/rcutiny.c @@ -147,6 +147,7 @@ void rcu_check_callbacks(int cpu, int user) */ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp) { + char *rn = NULL; struct rcu_head *next, *list; unsigned long flags; RCU_TRACE(int cb_count = 0); @@ -171,12 +172,13 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp) local_irq_restore(flags); /* Invoke the callbacks on the local list. */ + RCU_TRACE(rn = rcp->name); while (list) { next = list->next; prefetch(next); debug_rcu_head_unqueue(list); local_bh_disable(); - __rcu_reclaim(list); + __rcu_reclaim(rn, list); local_bh_enable(); list = next; RCU_TRACE(cb_count++); |