diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-21 16:38:26 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-21 16:38:26 -0500 |
| commit | 0f5c2ac58f22fd41deaeeb45ee752d4ae55f0d01 (patch) | |
| tree | 6e13ef4d7247e53d7a0f18e04549a8847cc80214 /kernel | |
| parent | cfd74486eace27a0899b30529d01bc1a09a5b973 (diff) | |
| parent | dfff95c394b0dd977a6b65bd52b99703fae94d9b (diff) | |
Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
um: Use generic irq Kconfig
tile: Use generic irq Kconfig
sparc: Use generic irq Kconfig
score: Use generic irq Kconfig
powerpc: Use generic irq Kconfig
parisc: Use generic irq Kconfig
mn10300: Use generic irq Kconfig
microblaze: Use generic irq Kconfig
m68knommu: Use generic irq Kconfig
ia64: Use generic irq Kconfig
frv: Use generic irq Kconfig
blackfin: Use generic irq Kconfig
alpha: Use generic irq Kconfig
genirq: Remove __do_IRQ
m32r: Convert to generic irq Kconfig
m32r: Convert usrv platform irq handling
m32r: Convert opsput_lcdpld irq chip
m32r: Convert opsput lanpld irq chip
m32r: Convert opsput pld irq chip
m32r: Convert opsput irq chip
...
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/Kconfig | 3 | ||||
| -rw-r--r-- | kernel/irq/handle.c | 111 |
2 files changed, 0 insertions, 114 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 31d766bf5d2..8e42fec7686 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig | |||
| @@ -9,9 +9,6 @@ menu "IRQ subsystem" | |||
| 9 | config GENERIC_HARDIRQS | 9 | config GENERIC_HARDIRQS |
| 10 | def_bool y | 10 | def_bool y |
| 11 | 11 | ||
| 12 | config GENERIC_HARDIRQS_NO__DO_IRQ | ||
| 13 | def_bool y | ||
| 14 | |||
| 15 | # Select this to disable the deprecated stuff | 12 | # Select this to disable the deprecated stuff |
| 16 | config GENERIC_HARDIRQS_NO_DEPRECATED | 13 | config GENERIC_HARDIRQS_NO_DEPRECATED |
| 17 | def_bool n | 14 | def_bool n |
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index e2347eb6330..3540a719012 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c | |||
| @@ -118,114 +118,3 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action) | |||
| 118 | 118 | ||
| 119 | return retval; | 119 | return retval; |
| 120 | } | 120 | } |
| 121 | |||
| 122 | #ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ | ||
| 123 | |||
| 124 | #ifdef CONFIG_ENABLE_WARN_DEPRECATED | ||
| 125 | # warning __do_IRQ is deprecated. Please convert to proper flow handlers | ||
| 126 | #endif | ||
| 127 | |||
| 128 | /** | ||
| 129 | * __do_IRQ - original all in one highlevel IRQ handler | ||
| 130 | * @irq: the interrupt number | ||
| 131 | * | ||
| 132 | * __do_IRQ handles all normal device IRQ's (the special | ||
| 133 | * SMP cross-CPU interrupts have their own specific | ||
| 134 | * handlers). | ||
| 135 | * | ||
| 136 | * This is the original x86 implementation which is used for every | ||
| 137 | * interrupt type. | ||
| 138 | */ | ||
| 139 | unsigned int __do_IRQ(unsigned int irq) | ||
| 140 | { | ||
| 141 | struct irq_desc *desc = irq_to_desc(irq); | ||
| 142 | struct irqaction *action; | ||
| 143 | unsigned int status; | ||
| 144 | |||
| 145 | kstat_incr_irqs_this_cpu(irq, desc); | ||
| 146 | |||
| 147 | if (CHECK_IRQ_PER_CPU(desc->status)) { | ||
| 148 | irqreturn_t action_ret; | ||
| 149 | |||
| 150 | /* | ||
| 151 | * No locking required for CPU-local interrupts: | ||
| 152 | */ | ||
| 153 | if (desc->irq_data.chip->ack) | ||
| 154 | desc->irq_data.chip->ack(irq); | ||
| 155 | if (likely(!(desc->status & IRQ_DISABLED))) { | ||
| 156 | action_ret = handle_IRQ_event(irq, desc->action); | ||
| 157 | if (!noirqdebug) | ||
| 158 | note_interrupt(irq, desc, action_ret); | ||
| 159 | } | ||
| 160 | desc->irq_data.chip->end(irq); | ||
| 161 | return 1; | ||
| 162 | } | ||
| 163 | |||
| 164 | raw_spin_lock(&desc->lock); | ||
| 165 | if (desc->irq_data.chip->ack) | ||
| 166 | desc->irq_data.chip->ack(irq); | ||
| 167 | /* | ||
| 168 | * REPLAY is when Linux resends an IRQ that was dropped earlier | ||
| 169 | * WAITING is used by probe to mark irqs that are being tested | ||
| 170 | */ | ||
| 171 | status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING); | ||
| 172 | status |= IRQ_PENDING; /* we _want_ to handle it */ | ||
| 173 | |||
| 174 | /* | ||
| 175 | * If the IRQ is disabled for whatever reason, we cannot | ||
| 176 | * use the action we have. | ||
| 177 | */ | ||
| 178 | action = NULL; | ||
| 179 | if (likely(!(status & (IRQ_DISABLED | IRQ_INPROGRESS)))) { | ||
| 180 | action = desc->action; | ||
| 181 | status &= ~IRQ_PENDING; /* we commit to handling */ | ||
| 182 | status |= IRQ_INPROGRESS; /* we are handling it */ | ||
| 183 | } | ||
| 184 | desc->status = status; | ||
| 185 | |||
| 186 | /* | ||
| 187 | * If there is no IRQ handler or it was disabled, exit early. | ||
| 188 | * Since we set PENDING, if another processor is handling | ||
| 189 | * a different instance of this same irq, the other processor | ||
| 190 | * will take care of it. | ||
| 191 | */ | ||
| 192 | if (unlikely(!action)) | ||
| 193 | goto out; | ||
| 194 | |||
| 195 | /* | ||
| 196 | * Edge triggered interrupts need to remember | ||
| 197 | * pending events. | ||
| 198 | * This applies to any hw interrupts that allow a second | ||
| 199 | * instance of the same irq to arrive while we are in do_IRQ | ||
| 200 | * or in the handler. But the code here only handles the _second_ | ||
| 201 | * instance of the irq, not the third or fourth. So it is mostly | ||
| 202 | * useful for irq hardware that does not mask cleanly in an | ||
| 203 | * SMP environment. | ||
| 204 | */ | ||
| 205 | for (;;) { | ||
| 206 | irqreturn_t action_ret; | ||
| 207 | |||
| 208 | raw_spin_unlock(&desc->lock); | ||
| 209 | |||
| 210 | action_ret = handle_IRQ_event(irq, action); | ||
| 211 | if (!noirqdebug) | ||
| 212 | note_interrupt(irq, desc, action_ret); | ||
| 213 | |||
| 214 | raw_spin_lock(&desc->lock); | ||
| 215 | if (likely(!(desc->status & IRQ_PENDING))) | ||
| 216 | break; | ||
| 217 | desc->status &= ~IRQ_PENDING; | ||
| 218 | } | ||
| 219 | desc->status &= ~IRQ_INPROGRESS; | ||
| 220 | |||
| 221 | out: | ||
| 222 | /* | ||
| 223 | * The ->end() handler has to deal with interrupts which got | ||
| 224 | * disabled while the handler was running. | ||
| 225 | */ | ||
| 226 | desc->irq_data.chip->end(irq); | ||
| 227 | raw_spin_unlock(&desc->lock); | ||
| 228 | |||
| 229 | return 1; | ||
| 230 | } | ||
| 231 | #endif | ||
