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authorPaul E. McKenney <paul.mckenney@linaro.org>2012-12-30 09:51:20 +0400
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2013-03-26 19:04:54 +0400
commitbd9f0686fc8c9a01c6850b1c611d1c9ad80b86d6 (patch)
tree9e19e1d9b746ee000864e42b50b49dbed89f946a /include/trace
parentb92db6cb7efcbd41e469e1d757c47da4865f7622 (diff)
downloadlinux-bd9f0686fc8c9a01c6850b1c611d1c9ad80b86d6.tar.xz
rcu: Repurpose no-CBs event tracing to future-GP events
Dyntick-idle CPUs need to be able to pre-announce their need for grace periods. This can be done using something similar to the mechanism used by no-CB CPUs to announce their need for grace periods. This commit moves in this direction by renaming the no-CBs grace-period event tracing to suit the new future-grace-period needs. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/rcu.h16
1 files changed, 8 insertions, 8 deletions
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index cdfed6d386eb..59ebcc89f148 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -72,10 +72,10 @@ TRACE_EVENT(rcu_grace_period,
);
/*
- * Tracepoint for no-callbacks grace-period events. The caller should
- * pull the data from the rcu_node structure, other than rcuname, which
- * comes from the rcu_state structure, and event, which is one of the
- * following:
+ * Tracepoint for future grace-period events, including those for no-callbacks
+ * CPUs. The caller should pull the data from the rcu_node structure,
+ * other than rcuname, which comes from the rcu_state structure, and event,
+ * which is one of the following:
*
* "Startleaf": Request a nocb grace period based on leaf-node data.
* "Startedleaf": Leaf-node start proved sufficient.
@@ -87,7 +87,7 @@ TRACE_EVENT(rcu_grace_period,
* "Cleanup": Clean up rcu_node structure after previous GP.
* "CleanupMore": Clean up, and another no-CB GP is needed.
*/
-TRACE_EVENT(rcu_nocb_grace_period,
+TRACE_EVENT(rcu_future_grace_period,
TP_PROTO(char *rcuname, unsigned long gpnum, unsigned long completed,
unsigned long c, u8 level, int grplo, int grphi,
@@ -653,9 +653,9 @@ TRACE_EVENT(rcu_barrier,
#define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
qsmask) do { } while (0)
-#define trace_rcu_nocb_grace_period(rcuname, gpnum, completed, c, \
- level, grplo, grphi, event) \
- do { } while (0)
+#define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \
+ level, grplo, grphi, event) \
+ do { } while (0)
#define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
#define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \