diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-21 16:38:26 -0500 |
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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 31d766bf5d2e..8e42fec7686d 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 e2347eb63306..3540a7190122 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 | ||