tlb: Don't do trace_tlb_flush() on offline CPUs
This commit causes the tlb_flush() event trace to skip tracing on
offline CPUs, thus preventing RCU readers from running on those
offline CPUs.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/include/trace/events/tlb.h b/include/trace/events/tlb.h
index 13391d2..0e76357 100644
--- a/include/trace/events/tlb.h
+++ b/include/trace/events/tlb.h
@@ -13,11 +13,13 @@
{ TLB_LOCAL_SHOOTDOWN, "local shootdown" }, \
{ TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" }
-TRACE_EVENT(tlb_flush,
+TRACE_EVENT_CONDITION(tlb_flush,
TP_PROTO(int reason, unsigned long pages),
TP_ARGS(reason, pages),
+ TP_CONDITION(cpu_online(smp_processor_id())),
+
TP_STRUCT__entry(
__field( int, reason)
__field(unsigned long, pages)
