enable wifi gpio

hc

2023-11-07 f45e756958099c35d6afb746df1d40a1c6302cfc

 kernel/include/linux/rcupdate.h
..
..
@@ -42,6 +42,7 @@
42
42
 #include <linux/lockdep.h>
43
43
 #include <asm/processor.h>
44
44
 #include <linux/cpumask.h>
45
+#include <linux/rcu_assign_pointer.h>
45
46
 
46
47
 #define ULONG_CMP_GE(a, b)	(ULONG_MAX / 2 >= (a) - (b))
47
48
 #define ULONG_CMP_LT(a, b)	(ULONG_MAX / 2 < (a) - (b))
..
..
@@ -55,7 +56,11 @@
55
56
 #define	call_rcu	call_rcu_sched
56
57
 #endif /* #else #ifdef CONFIG_PREEMPT_RCU */
57
58
 
59
+#ifdef CONFIG_PREEMPT_RT_FULL
60
+#define call_rcu_bh	call_rcu
61
+#else
58
62
 void call_rcu_bh(struct rcu_head *head, rcu_callback_t func);
63
+#endif
59
64
 void call_rcu_sched(struct rcu_head *head, rcu_callback_t func);
60
65
 void synchronize_sched(void);
61
66
 void rcu_barrier_tasks(void);
..
..
@@ -73,6 +78,11 @@
73
78
  * types of kernel builds, the rcu_read_lock() nesting depth is unknowable.
74
79
  */
75
80
 #define rcu_preempt_depth() (current->rcu_read_lock_nesting)
81
+#ifndef CONFIG_PREEMPT_RT_FULL
82
+#define sched_rcu_preempt_depth()	rcu_preempt_depth()
83
+#else
84
+static inline int sched_rcu_preempt_depth(void) { return 0; }
85
+#endif
76
86
 
77
87
 #else /* #ifdef CONFIG_PREEMPT_RCU */
78
88
 
..
..
@@ -95,6 +105,8 @@
95
105
 {
96
106
 	return 0;
97
107
 }
108
+
109
+#define sched_rcu_preempt_depth()	rcu_preempt_depth()
98
110
 
99
111
 #endif /* #else #ifdef CONFIG_PREEMPT_RCU */
100
112
 
..
..
@@ -253,7 +265,14 @@
253
265
 extern struct lockdep_map rcu_callback_map;
254
266
 int debug_lockdep_rcu_enabled(void);
255
267
 int rcu_read_lock_held(void);
268
+#ifdef CONFIG_PREEMPT_RT_FULL
269
+static inline int rcu_read_lock_bh_held(void)
270
+{
271
+	return rcu_read_lock_held();
272
+}
273
+#else
256
274
 int rcu_read_lock_bh_held(void);
275
+#endif
257
276
 int rcu_read_lock_sched_held(void);
258
277
 
259
278
 #else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
..
..
@@ -360,54 +379,6 @@
360
379
 	/* Dependency order vs. p above. */ \
361
380
 	typeof(p) ________p1 = READ_ONCE(p); \
362
381
 	((typeof(*p) __force __kernel *)(________p1)); \
363
-})
364
-
365
-/**
366
- * RCU_INITIALIZER() - statically initialize an RCU-protected global variable
367
- * @v: The value to statically initialize with.
368
- */
369
-#define RCU_INITIALIZER(v) (typeof(*(v)) __force __rcu *)(v)
370
-
371
-/**
372
- * rcu_assign_pointer() - assign to RCU-protected pointer
373
- * @p: pointer to assign to
374
- * @v: value to assign (publish)
375
- *
376
- * Assigns the specified value to the specified RCU-protected
377
- * pointer, ensuring that any concurrent RCU readers will see
378
- * any prior initialization.
379
- *
380
- * Inserts memory barriers on architectures that require them
381
- * (which is most of them), and also prevents the compiler from
382
- * reordering the code that initializes the structure after the pointer
383
- * assignment.  More importantly, this call documents which pointers
384
- * will be dereferenced by RCU read-side code.
385
- *
386
- * In some special cases, you may use RCU_INIT_POINTER() instead
387
- * of rcu_assign_pointer().  RCU_INIT_POINTER() is a bit faster due
388
- * to the fact that it does not constrain either the CPU or the compiler.
389
- * That said, using RCU_INIT_POINTER() when you should have used
390
- * rcu_assign_pointer() is a very bad thing that results in
391
- * impossible-to-diagnose memory corruption.  So please be careful.
392
- * See the RCU_INIT_POINTER() comment header for details.
393
- *
394
- * Note that rcu_assign_pointer() evaluates each of its arguments only
395
- * once, appearances notwithstanding.  One of the "extra" evaluations
396
- * is in typeof() and the other visible only to sparse (__CHECKER__),
397
- * neither of which actually execute the argument.  As with most cpp
398
- * macros, this execute-arguments-only-once property is important, so
399
- * please be careful when making changes to rcu_assign_pointer() and the
400
- * other macros that it invokes.
401
- */
402
-#define rcu_assign_pointer(p, v)					      \
403
-({									      \
404
-	uintptr_t _r_a_p__v = (uintptr_t)(v);				      \
405
-									      \
406
-	if (__builtin_constant_p(v) && (_r_a_p__v) == (uintptr_t)NULL)	      \
407
-		WRITE_ONCE((p), (typeof(p))(_r_a_p__v));		      \
408
-	else								      \
409
-		smp_store_release(&p, RCU_INITIALIZER((typeof(p))_r_a_p__v)); \
410
-	_r_a_p__v;							      \
411
382
 })
412
383
 
413
384
 /**
..
..
@@ -701,10 +672,14 @@
701
672
 static inline void rcu_read_lock_bh(void)
702
673
 {
703
674
 	local_bh_disable();
675
+#ifdef CONFIG_PREEMPT_RT_FULL
676
+	rcu_read_lock();
677
+#else
704
678
 	__acquire(RCU_BH);
705
679
 	rcu_lock_acquire(&rcu_bh_lock_map);
706
680
 	RCU_LOCKDEP_WARN(!rcu_is_watching(),
707
681
 			 "rcu_read_lock_bh() used illegally while idle");
682
+#endif
708
683
 }
709
684
 
710
685
 /*
..
..
@@ -714,10 +689,14 @@
714
689
  */
715
690
 static inline void rcu_read_unlock_bh(void)
716
691
 {
692
+#ifdef CONFIG_PREEMPT_RT_FULL
693
+	rcu_read_unlock();
694
+#else
717
695
 	RCU_LOCKDEP_WARN(!rcu_is_watching(),
718
696
 			 "rcu_read_unlock_bh() used illegally while idle");
719
697
 	rcu_lock_release(&rcu_bh_lock_map);
720
698
 	__release(RCU_BH);
699
+#endif
721
700
 	local_bh_enable();
722
701
 }
723
702