| | 1 | /* |
| | 2 | * include/linux/irqflags.h |
| | 3 | * |
| | 4 | * IRQ flags tracing: follow the state of the hardirq and softirq flags and |
| | 5 | * provide callbacks for transitions between ON and OFF states. |
| | 6 | * |
| | 7 | * This file gets included from lowlevel asm headers too, to provide |
| | 8 | * wrapped versions of the local_irq_*() APIs, based on the |
| | 9 | * raw_local_irq_*() macros from the lowlevel headers. |
| | 10 | */ |
| | 11 | #ifndef _LINUX_TRACE_IRQFLAGS_H |
| | 12 | #define _LINUX_TRACE_IRQFLAGS_H |
| | 13 | |
| | 14 | #include <linux/typecheck.h> |
| | 15 | #include <asm/irqflags.h> |
| | 16 | |
| | 17 | #ifdef CONFIG_TRACE_IRQFLAGS |
| | 18 | extern void trace_softirqs_on(unsigned long ip); |
| | 19 | extern void trace_softirqs_off(unsigned long ip); |
| | 20 | extern void trace_hardirqs_on(void); |
| | 21 | extern void trace_hardirqs_off(void); |
| | 22 | # define trace_hardirq_context(p) ((p)->hardirq_context) |
| | 23 | # define trace_softirq_context(p) ((p)->softirq_context) |
| | 24 | # define trace_hardirqs_enabled(p) ((p)->hardirqs_enabled) |
| | 25 | # define trace_softirqs_enabled(p) ((p)->softirqs_enabled) |
| | 26 | # define trace_hardirq_enter() do { current->hardirq_context++; } while (0) |
| | 27 | # define trace_hardirq_exit() do { current->hardirq_context--; } while (0) |
| | 28 | # define lockdep_softirq_enter() do { current->softirq_context++; } while (0) |
| | 29 | # define lockdep_softirq_exit() do { current->softirq_context--; } while (0) |
| | 30 | # define INIT_TRACE_IRQFLAGS .softirqs_enabled = 1, |
| | 31 | #else |
| | 32 | # define trace_hardirqs_on() do { } while (0) |
| | 33 | # define trace_hardirqs_off() do { } while (0) |
| | 34 | # define trace_softirqs_on(ip) do { } while (0) |
| | 35 | # define trace_softirqs_off(ip) do { } while (0) |
| | 36 | # define trace_hardirq_context(p) 0 |
| | 37 | # define trace_softirq_context(p) 0 |
| | 38 | # define trace_hardirqs_enabled(p) 0 |
| | 39 | # define trace_softirqs_enabled(p) 0 |
| | 40 | # define trace_hardirq_enter() do { } while (0) |
| | 41 | # define trace_hardirq_exit() do { } while (0) |
| | 42 | # define lockdep_softirq_enter() do { } while (0) |
| | 43 | # define lockdep_softirq_exit() do { } while (0) |
| | 44 | # define INIT_TRACE_IRQFLAGS |
| | 45 | #endif |
| | 46 | |
| | 47 | #ifdef CONFIG_PREEMPT_MONITOR |
| | 48 | extern void MT_trace_softirqs_on(unsigned long ip); |
| | 49 | extern void MT_trace_softirqs_off(unsigned long ip); |
| | 50 | extern void MT_trace_hardirqs_on(void); |
| | 51 | extern void MT_trace_hardirqs_off(void); |
| | 52 | #endif |
| | 53 | #if defined(CONFIG_IRQSOFF_TRACER) || \ |
| | 54 | defined(CONFIG_PREEMPT_TRACER) |
| | 55 | extern void stop_critical_timings(void); |
| | 56 | extern void start_critical_timings(void); |
| | 57 | #else |
| | 58 | # define stop_critical_timings() do { } while (0) |
| | 59 | # define start_critical_timings() do { } while (0) |
| | 60 | #endif |
| | 61 | |
| | 62 | /* |
| | 63 | * Wrap the arch provided IRQ routines to provide appropriate checks. |
| | 64 | */ |
| | 65 | #define raw_local_irq_disable() arch_local_irq_disable() |
| | 66 | #define raw_local_irq_enable() arch_local_irq_enable() |
| | 67 | #define raw_local_irq_save(flags) \ |
| | 68 | do { \ |
| | 69 | typecheck(unsigned long, flags); \ |
| | 70 | flags = arch_local_irq_save(); \ |
| | 71 | } while (0) |
| | 72 | #define raw_local_irq_restore(flags) \ |
| | 73 | do { \ |
| | 74 | typecheck(unsigned long, flags); \ |
| | 75 | arch_local_irq_restore(flags); \ |
| | 76 | } while (0) |
| | 77 | #define raw_local_save_flags(flags) \ |
| | 78 | do { \ |
| | 79 | typecheck(unsigned long, flags); \ |
| | 80 | flags = arch_local_save_flags(); \ |
| | 81 | } while (0) |
| | 82 | #define raw_irqs_disabled_flags(flags) \ |
| | 83 | ({ \ |
| | 84 | typecheck(unsigned long, flags); \ |
| | 85 | arch_irqs_disabled_flags(flags); \ |
| | 86 | }) |
| | 87 | #define raw_irqs_disabled() (arch_irqs_disabled()) |
| | 88 | #define raw_safe_halt() arch_safe_halt() |
| | 89 | |
| | 90 | /* |
| | 91 | * The local_irq_*() APIs are equal to the raw_local_irq*() |
| | 92 | * if !TRACE_IRQFLAGS. |
| | 93 | */ |
| | 94 | #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT |
| | 95 | #ifdef CONFIG_PREEMPT_MONITOR |
| | 96 | #define local_irq_enable() \ |
| | 97 | do { MT_trace_hardirqs_on();trace_hardirqs_on(); raw_local_irq_enable(); } while (0) |
| | 98 | #define local_irq_disable() \ |
| | 99 | do { raw_local_irq_disable();trace_hardirqs_off(); MT_trace_hardirqs_off(); } while (0) |
| | 100 | #define local_irq_save(flags) \ |
| | 101 | do { \ |
| | 102 | typecheck(unsigned long, flags); \ |
| | 103 | if (irqs_disabled()) { \ |
| | 104 | raw_local_irq_save(flags); \ |
| | 105 | trace_hardirqs_off(); \ |
| | 106 | } else { \ |
| | 107 | raw_local_irq_save(flags); \ |
| | 108 | trace_hardirqs_off(); \ |
| | 109 | MT_trace_hardirqs_off(); \ |
| | 110 | } \ |
| | 111 | } while (0) |
| | 112 | |
| | 113 | |
| | 114 | #define local_irq_restore(flags) \ |
| | 115 | do { \ |
| | 116 | typecheck(unsigned long, flags); \ |
| | 117 | if (raw_irqs_disabled_flags(flags)) { \ |
| | 118 | raw_local_irq_restore(flags); \ |
| | 119 | trace_hardirqs_off(); \ |
| | 120 | } else { \ |
| | 121 | MT_trace_hardirqs_on(); \ |
| | 122 | trace_hardirqs_on(); \ |
| | 123 | raw_local_irq_restore(flags); \ |
| | 124 | } \ |
| | 125 | } while (0) |
| | 126 | #else /* !CONFIG_PREEMPT_MONITOR*/ |
| | 127 | #define local_irq_enable() \ |
| | 128 | do { trace_hardirqs_on(); raw_local_irq_enable(); } while (0) |
| | 129 | #define local_irq_disable() \ |
| | 130 | do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0) |
| | 131 | #define local_irq_save(flags) \ |
| | 132 | do { \ |
| | 133 | raw_local_irq_save(flags); \ |
| | 134 | trace_hardirqs_off(); \ |
| | 135 | } while (0) |
| | 136 | |
| | 137 | |
| | 138 | #define local_irq_restore(flags) \ |
| | 139 | do { \ |
| | 140 | if (raw_irqs_disabled_flags(flags)) { \ |
| | 141 | raw_local_irq_restore(flags); \ |
| | 142 | trace_hardirqs_off(); \ |
| | 143 | } else { \ |
| | 144 | trace_hardirqs_on(); \ |
| | 145 | raw_local_irq_restore(flags); \ |
| | 146 | } \ |
| | 147 | } while (0) |
| | 148 | #endif /* !CONFIG_PREEMPT_MONITOR*/ |
| | 149 | #define local_save_flags(flags) \ |
| | 150 | do { \ |
| | 151 | raw_local_save_flags(flags); \ |
| | 152 | } while (0) |
| | 153 | |
| | 154 | #define irqs_disabled_flags(flags) \ |
| | 155 | ({ \ |
| | 156 | raw_irqs_disabled_flags(flags); \ |
| | 157 | }) |
| | 158 | |
| | 159 | #define irqs_disabled() \ |
| | 160 | ({ \ |
| | 161 | unsigned long _flags; \ |
| | 162 | raw_local_save_flags(_flags); \ |
| | 163 | raw_irqs_disabled_flags(_flags); \ |
| | 164 | }) |
| | 165 | |
| | 166 | #define safe_halt() \ |
| | 167 | do { \ |
| | 168 | trace_hardirqs_on(); \ |
| | 169 | raw_safe_halt(); \ |
| | 170 | } while (0) |
| | 171 | |
| | 172 | |
| | 173 | #else /* !CONFIG_TRACE_IRQFLAGS_SUPPORT */ |
| | 174 | |
| | 175 | #define local_irq_enable() do { raw_local_irq_enable(); } while (0) |
| | 176 | #define local_irq_disable() do { raw_local_irq_disable(); } while (0) |
| | 177 | #define local_irq_save(flags) \ |
| | 178 | do { \ |
| | 179 | raw_local_irq_save(flags); \ |
| | 180 | } while (0) |
| | 181 | #define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0) |
| | 182 | #define local_save_flags(flags) do { raw_local_save_flags(flags); } while (0) |
| | 183 | #define irqs_disabled() (raw_irqs_disabled()) |
| | 184 | #define irqs_disabled_flags(flags) (raw_irqs_disabled_flags(flags)) |
| | 185 | #define safe_halt() do { raw_safe_halt(); } while (0) |
| | 186 | |
| | 187 | #endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */ |
| | 188 | |
| | 189 | #endif |
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame_incremental