gmac get mac form eeprom

hc

2024-11-01 7e970c18f85f99acc678d90128b6e01dce1bf273

 kernel/kernel/rcu/tree.c
..
..
@@ -232,6 +232,11 @@
232
232
 	return 0;
233
233
 }
234
234
 
235
+static inline bool rcu_in_nonmaskable(void)
236
+{
237
+	return on_pipeline_entry() || in_nmi();
238
+}
239
+
235
240
 void rcu_softirq_qs(void)
236
241
 {
237
242
 	rcu_qs();
..
..
@@ -710,6 +715,7 @@
710
715
 	struct rcu_data *rdp = this_cpu_ptr(&rcu_data);
711
716
 
712
717
 	instrumentation_begin();
718
+
713
719
 	/*
714
720
 	 * Check for ->dynticks_nmi_nesting underflow and bad ->dynticks.
715
721
 	 * (We are exiting an NMI handler, so RCU better be paying attention
..
..
@@ -735,7 +741,7 @@
735
741
 	trace_rcu_dyntick(TPS("Startirq"), rdp->dynticks_nmi_nesting, 0, atomic_read(&rdp->dynticks));
736
742
 	WRITE_ONCE(rdp->dynticks_nmi_nesting, 0); /* Avoid store tearing. */
737
743
 
738
-	if (!in_nmi())
744
+	if (!rcu_in_nonmaskable())
739
745
 		rcu_prepare_for_idle();
740
746
 
741
747
 	// instrumentation for the noinstr rcu_dynticks_eqs_enter()
..
..
@@ -746,7 +752,7 @@
746
752
 	rcu_dynticks_eqs_enter();
747
753
 	// ... but is no longer watching here.
748
754
 
749
-	if (!in_nmi())
755
+	if (!rcu_in_nonmaskable())
750
756
 		rcu_dynticks_task_enter();
751
757
 }
752
758
 
..
..
@@ -935,7 +941,7 @@
935
941
 	struct rcu_data *rdp = this_cpu_ptr(&rcu_data);
936
942
 
937
943
 	// If we're here from NMI there's nothing to do.
938
-	if (in_nmi())
944
+	if (rcu_in_nonmaskable())
939
945
 		return;
940
946
 
941
947
 	RCU_LOCKDEP_WARN(rcu_dynticks_curr_cpu_in_eqs(),
..
..
@@ -996,14 +1002,14 @@
996
1002
 	 */
997
1003
 	if (rcu_dynticks_curr_cpu_in_eqs()) {
998
1004
 
999
-		if (!in_nmi())
1005
+		if (!rcu_in_nonmaskable())
1000
1006
 			rcu_dynticks_task_exit();
1001
1007
 
1002
1008
 		// RCU is not watching here ...
1003
1009
 		rcu_dynticks_eqs_exit();
1004
1010
 		// ... but is watching here.
1005
1011
 
1006
-		if (!in_nmi()) {
1012
+		if (!rcu_in_nonmaskable()) {
1007
1013
 			instrumentation_begin();
1008
1014
 			rcu_cleanup_after_idle();
1009
1015
 			instrumentation_end();
..
..
@@ -1016,7 +1022,7 @@
1016
1022
 		instrument_atomic_write(&rdp->dynticks, sizeof(rdp->dynticks));
1017
1023
 
1018
1024
 		incby = 1;
1019
-	} else if (!in_nmi()) {
1025
+	} else if (!rcu_in_nonmaskable()) {
1020
1026
 		instrumentation_begin();
1021
1027
 		rcu_irq_enter_check_tick();
1022
1028
 	} else  {
..
..
@@ -1094,10 +1100,10 @@
1094
1100
 /**
1095
1101
  * rcu_is_watching - see if RCU thinks that the current CPU is not idle
1096
1102
  *
1097
- * Return true if RCU is watching the running CPU, which means that this
1098
- * CPU can safely enter RCU read-side critical sections.  In other words,
1099
- * if the current CPU is not in its idle loop or is in an interrupt or
1100
- * NMI handler, return true.
1103
+ * Return true if RCU is watching the running CPU, which means that
1104
+ * this CPU can safely enter RCU read-side critical sections.  In
1105
+ * other words, if the current CPU is not in its idle loop or is in an
1106
+ * interrupt or NMI handler, return true.
1101
1107
  *
1102
1108
  * Make notrace because it can be called by the internal functions of
1103
1109
  * ftrace, and making this notrace removes unnecessary recursion calls.
..
..
@@ -1106,6 +1112,9 @@
1106
1112
 {
1107
1113
 	bool ret;
1108
1114
 
1115
+	if (on_pipeline_entry())
1116
+ 		return true;
1117
+ 
1109
1118
 	preempt_disable_notrace();
1110
1119
 	ret = !rcu_dynticks_curr_cpu_in_eqs();
1111
1120
 	preempt_enable_notrace();
..
..
@@ -1152,7 +1161,7 @@
1152
1161
 	struct rcu_node *rnp;
1153
1162
 	bool ret = false;
1154
1163
 
1155
-	if (in_nmi() || !rcu_scheduler_fully_active)
1164
+	if (rcu_in_nonmaskable() || !rcu_scheduler_fully_active)
1156
1165
 		return true;
1157
1166
 	preempt_disable_notrace();
1158
1167
 	rdp = this_cpu_ptr(&rcu_data);