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-rw-r--r--include/linux/irqflags.h37
-rw-r--r--include/linux/spinlock.h53
2 files changed, 76 insertions, 14 deletions
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 412e025bc5c7..4fe740bf4eae 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -11,6 +11,12 @@
11#ifndef _LINUX_TRACE_IRQFLAGS_H 11#ifndef _LINUX_TRACE_IRQFLAGS_H
12#define _LINUX_TRACE_IRQFLAGS_H 12#define _LINUX_TRACE_IRQFLAGS_H
13 13
14#define BUILD_CHECK_IRQ_FLAGS(flags) \
15 do { \
16 BUILD_BUG_ON(sizeof(flags) != sizeof(unsigned long)); \
17 typecheck(unsigned long, flags); \
18 } while (0)
19
14#ifdef CONFIG_TRACE_IRQFLAGS 20#ifdef CONFIG_TRACE_IRQFLAGS
15 extern void trace_hardirqs_on(void); 21 extern void trace_hardirqs_on(void);
16 extern void trace_hardirqs_off(void); 22 extern void trace_hardirqs_off(void);
@@ -50,10 +56,15 @@
50#define local_irq_disable() \ 56#define local_irq_disable() \
51 do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0) 57 do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0)
52#define local_irq_save(flags) \ 58#define local_irq_save(flags) \
53 do { raw_local_irq_save(flags); trace_hardirqs_off(); } while (0) 59 do { \
60 BUILD_CHECK_IRQ_FLAGS(flags); \
61 raw_local_irq_save(flags); \
62 trace_hardirqs_off(); \
63 } while (0)
54 64
55#define local_irq_restore(flags) \ 65#define local_irq_restore(flags) \
56 do { \ 66 do { \
67 BUILD_CHECK_IRQ_FLAGS(flags); \
57 if (raw_irqs_disabled_flags(flags)) { \ 68 if (raw_irqs_disabled_flags(flags)) { \
58 raw_local_irq_restore(flags); \ 69 raw_local_irq_restore(flags); \
59 trace_hardirqs_off(); \ 70 trace_hardirqs_off(); \
@@ -69,8 +80,16 @@
69 */ 80 */
70# define raw_local_irq_disable() local_irq_disable() 81# define raw_local_irq_disable() local_irq_disable()
71# define raw_local_irq_enable() local_irq_enable() 82# define raw_local_irq_enable() local_irq_enable()
72# define raw_local_irq_save(flags) local_irq_save(flags) 83# define raw_local_irq_save(flags) \
73# define raw_local_irq_restore(flags) local_irq_restore(flags) 84 do { \
85 BUILD_CHECK_IRQ_FLAGS(flags); \
86 local_irq_save(flags); \
87 } while (0)
88# define raw_local_irq_restore(flags) \
89 do { \
90 BUILD_CHECK_IRQ_FLAGS(flags); \
91 local_irq_restore(flags); \
92 } while (0)
74#endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */ 93#endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */
75 94
76#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT 95#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
@@ -80,7 +99,11 @@
80 raw_safe_halt(); \ 99 raw_safe_halt(); \
81 } while (0) 100 } while (0)
82 101
83#define local_save_flags(flags) raw_local_save_flags(flags) 102#define local_save_flags(flags) \
103 do { \
104 BUILD_CHECK_IRQ_FLAGS(flags); \
105 raw_local_save_flags(flags); \
106 } while (0)
84 107
85#define irqs_disabled() \ 108#define irqs_disabled() \
86({ \ 109({ \
@@ -90,7 +113,11 @@
90 raw_irqs_disabled_flags(flags); \ 113 raw_irqs_disabled_flags(flags); \
91}) 114})
92 115
93#define irqs_disabled_flags(flags) raw_irqs_disabled_flags(flags) 116#define irqs_disabled_flags(flags) \
117({ \
118 BUILD_CHECK_IRQ_FLAGS(flags); \
119 raw_irqs_disabled_flags(flags); \
120})
94#endif /* CONFIG_X86 */ 121#endif /* CONFIG_X86 */
95 122
96#endif 123#endif
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index b800d2d68b32..54ad37089c49 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -52,6 +52,7 @@
52#include <linux/thread_info.h> 52#include <linux/thread_info.h>
53#include <linux/kernel.h> 53#include <linux/kernel.h>
54#include <linux/stringify.h> 54#include <linux/stringify.h>
55#include <linux/irqflags.h>
55 56
56#include <asm/system.h> 57#include <asm/system.h>
57 58
@@ -183,13 +184,37 @@ do { \
183#define read_lock(lock) _read_lock(lock) 184#define read_lock(lock) _read_lock(lock)
184 185
185#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) 186#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
186#define spin_lock_irqsave(lock, flags) flags = _spin_lock_irqsave(lock) 187#define spin_lock_irqsave(lock, flags) \
187#define read_lock_irqsave(lock, flags) flags = _read_lock_irqsave(lock) 188 do { \
188#define write_lock_irqsave(lock, flags) flags = _write_lock_irqsave(lock) 189 BUILD_CHECK_IRQ_FLAGS(flags); \
190 flags = _spin_lock_irqsave(lock); \
191 } while (0)
192#define read_lock_irqsave(lock, flags) \
193 do { \
194 BUILD_CHECK_IRQ_FLAGS(flags); \
195 flags = _read_lock_irqsave(lock); \
196 } while (0)
197#define write_lock_irqsave(lock, flags) \
198 do { \
199 BUILD_CHECK_IRQ_FLAGS(flags); \
200 flags = _write_lock_irqsave(lock); \
201 } while (0)
189#else 202#else
190#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags) 203#define spin_lock_irqsave(lock, flags) \
191#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags) 204 do { \
192#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags) 205 BUILD_CHECK_IRQ_FLAGS(flags); \
206 _spin_lock_irqsave(lock, flags); \
207 } while (0)
208#define read_lock_irqsave(lock, flags) \
209 do { \
210 BUILD_CHECK_IRQ_FLAGS(flags); \
211 _read_lock_irqsave(lock, flags); \
212 } while (0)
213#define write_lock_irqsave(lock, flags) \
214 do { \
215 BUILD_CHECK_IRQ_FLAGS(flags); \
216 _write_lock_irqsave(lock, flags); \
217 } while (0)
193#endif 218#endif
194 219
195#define spin_lock_irq(lock) _spin_lock_irq(lock) 220#define spin_lock_irq(lock) _spin_lock_irq(lock)
@@ -225,15 +250,24 @@ do { \
225#endif 250#endif
226 251
227#define spin_unlock_irqrestore(lock, flags) \ 252#define spin_unlock_irqrestore(lock, flags) \
228 _spin_unlock_irqrestore(lock, flags) 253 do { \
254 BUILD_CHECK_IRQ_FLAGS(flags); \
255 _spin_unlock_irqrestore(lock, flags); \
256 } while (0)
229#define spin_unlock_bh(lock) _spin_unlock_bh(lock) 257#define spin_unlock_bh(lock) _spin_unlock_bh(lock)
230 258
231#define read_unlock_irqrestore(lock, flags) \ 259#define read_unlock_irqrestore(lock, flags) \
232 _read_unlock_irqrestore(lock, flags) 260 do { \
261 BUILD_CHECK_IRQ_FLAGS(flags); \
262 _read_unlock_irqrestore(lock, flags); \
263 } while (0)
233#define read_unlock_bh(lock) _read_unlock_bh(lock) 264#define read_unlock_bh(lock) _read_unlock_bh(lock)
234 265
235#define write_unlock_irqrestore(lock, flags) \ 266#define write_unlock_irqrestore(lock, flags) \
236 _write_unlock_irqrestore(lock, flags) 267 do { \
268 BUILD_CHECK_IRQ_FLAGS(flags); \
269 _write_unlock_irqrestore(lock, flags); \
270 } while (0)
237#define write_unlock_bh(lock) _write_unlock_bh(lock) 271#define write_unlock_bh(lock) _write_unlock_bh(lock)
238 272
239#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock)) 273#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock))
@@ -247,6 +281,7 @@ do { \
247 281
248#define spin_trylock_irqsave(lock, flags) \ 282#define spin_trylock_irqsave(lock, flags) \
249({ \ 283({ \
284 BUILD_CHECK_IRQ_FLAGS(flags); \
250 local_irq_save(flags); \ 285 local_irq_save(flags); \
251 spin_trylock(lock) ? \ 286 spin_trylock(lock) ? \
252 1 : ({ local_irq_restore(flags); 0; }); \ 287 1 : ({ local_irq_restore(flags); 0; }); \
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-25 05:26:43 -0400