[patch 24/37] genirq: Remove __do_IRQ

Thomas Gleixner
2011-01-19T21:50:47Z

[-- Attachment #1: genirq-remove__do_IRQ.patch --]
[-- Type: text/plain, Size: 12524 bytes --]

All architectures are finally converted. Remove the cruft.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
---
Documentation/feature-removal-schedule.txt | 8 --
arch/alpha/Kconfig | 3
arch/blackfin/Kconfig | 3
arch/frv/Kconfig | 4 -
arch/ia64/Kconfig | 3
arch/m68knommu/Kconfig | 4 -
arch/microblaze/Kconfig | 3
arch/mips/Kconfig | 3
arch/mn10300/Kconfig | 3
arch/parisc/Kconfig | 4 -
arch/powerpc/Kconfig | 4 -
arch/score/Kconfig | 3
arch/sparc/Kconfig | 4 -
arch/tile/Kconfig | 3
arch/um/Kconfig.um | 3
include/linux/irqdesc.h | 14 ---
kernel/irq/Kconfig | 3
kernel/irq/handle.c | 111 -----------------------------
18 files changed, 183 deletions(-)

Index: linux-2.6/Documentation/feature-removal-schedule.txt
===================================================================
--- linux-2.6.orig/Documentation/feature-removal-schedule.txt
+++ linux-2.6/Documentation/feature-removal-schedule.txt
@@ -357,14 +357,6 @@ Who: Dave Jones <davej@redhat.com>, Matt

-----------------------------

-What: __do_IRQ all in one fits nothing interrupt handler
-When: 2.6.32
-Why: __do_IRQ was kept for easy migration to the type flow handlers.
- More than two years of migration time is enough.
-Who: Thomas Gleixner <tglx@linutronix.de>
-
------------------------------
-
What: fakephp and associated sysfs files in /sys/bus/pci/slots/
When: 2011
Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to
Index: linux-2.6/arch/alpha/Kconfig
===================================================================
--- linux-2.6.orig/arch/alpha/Kconfig
+++ linux-2.6/arch/alpha/Kconfig
@@ -68,9 +68,6 @@ config GENERIC_IOMAP
bool
default n

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_HARDIRQS
bool
default y
Index: linux-2.6/arch/blackfin/Kconfig
===================================================================
--- linux-2.6.orig/arch/blackfin/Kconfig
+++ linux-2.6/arch/blackfin/Kconfig
@@ -50,9 +50,6 @@ config GENERIC_HARDIRQS
config GENERIC_IRQ_PROBE
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_GPIO
def_bool y

Index: linux-2.6/arch/frv/Kconfig
===================================================================
--- linux-2.6.orig/arch/frv/Kconfig
+++ linux-2.6/arch/frv/Kconfig
@@ -33,10 +33,6 @@ config GENERIC_HARDIRQS
bool
default y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- bool
- default y
-
config TIME_LOW_RES
bool
default y
Index: linux-2.6/arch/ia64/Kconfig
===================================================================
--- linux-2.6.orig/arch/ia64/Kconfig
+++ linux-2.6/arch/ia64/Kconfig
@@ -684,9 +684,6 @@ source "lib/Kconfig"
config GENERIC_HARDIRQS
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_IRQ_PROBE
bool
default y
Index: linux-2.6/arch/m68knommu/Kconfig
===================================================================
--- linux-2.6.orig/arch/m68knommu/Kconfig
+++ linux-2.6/arch/m68knommu/Kconfig
@@ -52,10 +52,6 @@ config GENERIC_HARDIRQS
bool
default y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- bool
- default y
-
config GENERIC_CALIBRATE_DELAY
bool
default y
Index: linux-2.6/arch/microblaze/Kconfig
===================================================================
--- linux-2.6.orig/arch/microblaze/Kconfig
+++ linux-2.6/arch/microblaze/Kconfig
@@ -52,9 +52,6 @@ config GENERIC_TIME_VSYSCALL
config GENERIC_CLOCKEVENTS
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_GPIO
def_bool y

Index: linux-2.6/arch/mips/Kconfig
===================================================================
--- linux-2.6.orig/arch/mips/Kconfig
+++ linux-2.6/arch/mips/Kconfig
@@ -793,9 +793,6 @@ config SCHED_OMIT_FRAME_POINTER
bool
default y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
#
# Select some configuration options automatically based on user selections.
#
Index: linux-2.6/arch/mn10300/Kconfig
===================================================================
--- linux-2.6.orig/arch/mn10300/Kconfig
+++ linux-2.6/arch/mn10300/Kconfig
@@ -34,9 +34,6 @@ config RWSEM_GENERIC_SPINLOCK
config RWSEM_XCHGADD_ALGORITHM
bool

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_CALIBRATE_DELAY
def_bool y

Index: linux-2.6/arch/parisc/Kconfig
===================================================================
--- linux-2.6.orig/arch/parisc/Kconfig
+++ linux-2.6/arch/parisc/Kconfig
@@ -12,7 +12,6 @@ config PARISC
select HAVE_IRQ_WORK
select HAVE_PERF_EVENTS
select GENERIC_ATOMIC64 if !64BIT
- select GENERIC_HARDIRQS_NO__DO_IRQ
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
in many of their workstations & servers (HP9000 700 and 800 series,
@@ -79,9 +78,6 @@ config IRQ_PER_CPU
bool
default y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
# unless you want to implement ACPI on PA-RISC ... ;-)
config PM
bool
Index: linux-2.6/arch/powerpc/Kconfig
===================================================================
--- linux-2.6.orig/arch/powerpc/Kconfig
+++ linux-2.6/arch/powerpc/Kconfig
@@ -40,10 +40,6 @@ config GENERIC_HARDIRQS
bool
default y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- bool
- default y
-
config HAVE_SETUP_PER_CPU_AREA
def_bool PPC64

Index: linux-2.6/arch/score/Kconfig
===================================================================
--- linux-2.6.orig/arch/score/Kconfig
+++ linux-2.6/arch/score/Kconfig
@@ -53,9 +53,6 @@ config GENERIC_CLOCKEVENTS
config SCHED_NO_NO_OMIT_FRAME_POINTER
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_SYSCALL_TABLE
def_bool y

Index: linux-2.6/arch/sparc/Kconfig
===================================================================
--- linux-2.6.orig/arch/sparc/Kconfig
+++ linux-2.6/arch/sparc/Kconfig
@@ -107,10 +107,6 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
config NEED_PER_CPU_PAGE_FIRST_CHUNK
def_bool y if SPARC64

-config GENERIC_HARDIRQS_NO__DO_IRQ
- bool
- def_bool y if SPARC64
-
config MMU
bool
default y
Index: linux-2.6/arch/tile/Kconfig
===================================================================
--- linux-2.6.orig/arch/tile/Kconfig
+++ linux-2.6/arch/tile/Kconfig
@@ -10,9 +10,6 @@ config GENERIC_CSUM
config GENERIC_HARDIRQS
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config GENERIC_IRQ_PROBE
def_bool y

Index: linux-2.6/arch/um/Kconfig.um
===================================================================
--- linux-2.6.orig/arch/um/Kconfig.um
+++ linux-2.6/arch/um/Kconfig.um
@@ -120,9 +120,6 @@ config SMP

If you don't know what to do, say N.

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
Index: linux-2.6/include/linux/irqdesc.h
===================================================================
--- linux-2.6.orig/include/linux/irqdesc.h
+++ linux-2.6/include/linux/irqdesc.h
@@ -101,13 +101,6 @@ static inline struct irq_desc *move_irq_
#define get_irq_desc_msi(desc) ((desc)->irq_data.msi_desc)

/*
- * Monolithic do_IRQ implementation.
- */
-#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
-extern unsigned int __do_IRQ(unsigned int irq);
-#endif
-
-/*
* Architectures call this to let the generic IRQ layer
* handle an interrupt. If the descriptor is attached to an
* irqchip-style controller then we call the ->handle_irq() handler,
@@ -115,14 +108,7 @@ extern unsigned int __do_IRQ(unsigned in
*/
static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
{
-#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
desc->handle_irq(irq, desc);
-#else
- if (likely(desc->handle_irq))
- desc->handle_irq(irq, desc);
- else
- __do_IRQ(irq);
-#endif
}

static inline void generic_handle_irq(unsigned int irq)
Index: linux-2.6/kernel/irq/Kconfig
===================================================================
--- linux-2.6.orig/kernel/irq/Kconfig
+++ linux-2.6/kernel/irq/Kconfig
@@ -9,9 +9,6 @@ menu "IRQ subsystem"
config GENERIC_HARDIRQS
def_bool y

-config GENERIC_HARDIRQS_NO__DO_IRQ
- def_bool y
-
# Select this to disable the deprecated stuff
config GENERIC_HARDIRQS_NO_DEPRECATED
def_bool n
Index: linux-2.6/kernel/irq/handle.c
===================================================================
--- linux-2.6.orig/kernel/irq/handle.c
+++ linux-2.6/kernel/irq/handle.c
@@ -118,114 +118,3 @@ irqreturn_t handle_IRQ_event(unsigned in

return retval;
}
-
-#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
-
-#ifdef CONFIG_ENABLE_WARN_DEPRECATED
-# warning __do_IRQ is deprecated. Please convert to proper flow handlers
-#endif
-
-/**
- * __do_IRQ - original all in one highlevel IRQ handler
- * @irq: the interrupt number
- *
- * __do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- *
- * This is the original x86 implementation which is used for every
- * interrupt type.
- */
-unsigned int __do_IRQ(unsigned int irq)
-{
- struct irq_desc *desc = irq_to_desc(irq);
- struct irqaction *action;
- unsigned int status;
-
- kstat_incr_irqs_this_cpu(irq, desc);
-
- if (CHECK_IRQ_PER_CPU(desc->status)) {
- irqreturn_t action_ret;
-
- /*
- * No locking required for CPU-local interrupts:
- */
- if (desc->irq_data.chip->ack)
- desc->irq_data.chip->ack(irq);
- if (likely(!(desc->status & IRQ_DISABLED))) {
- action_ret = handle_IRQ_event(irq, desc->action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
- }
- desc->irq_data.chip->end(irq);
- return 1;
- }
-
- raw_spin_lock(&desc->lock);
- if (desc->irq_data.chip->ack)
- desc->irq_data.chip->ack(irq);
- /*
- * REPLAY is when Linux resends an IRQ that was dropped earlier
- * WAITING is used by probe to mark irqs that are being tested
- */
- status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING);
- status |= IRQ_PENDING; /* we _want_ to handle it */
-
- /*
- * If the IRQ is disabled for whatever reason, we cannot
- * use the action we have.
- */
- action = NULL;
- if (likely(!(status & (IRQ_DISABLED | IRQ_INPROGRESS)))) {
- action = desc->action;
- status &= ~IRQ_PENDING; /* we commit to handling */
- status |= IRQ_INPROGRESS; /* we are handling it */
- }
- desc->status = status;
-
- /*
- * If there is no IRQ handler or it was disabled, exit early.
- * Since we set PENDING, if another processor is handling
- * a different instance of this same irq, the other processor
- * will take care of it.
- */
- if (unlikely(!action))
- goto out;
-
- /*
- * Edge triggered interrupts need to remember
- * pending events.
- * This applies to any hw interrupts that allow a second
- * instance of the same irq to arrive while we are in do_IRQ
- * or in the handler. But the code here only handles the _second_
- * instance of the irq, not the third or fourth. So it is mostly
- * useful for irq hardware that does not mask cleanly in an
- * SMP environment.
- */
- for (;;) {
- irqreturn_t action_ret;
-
- raw_spin_unlock(&desc->lock);
-
- action_ret = handle_IRQ_event(irq, action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
-
- raw_spin_lock(&desc->lock);
- if (likely(!(desc->status & IRQ_PENDING)))
- break;
- desc->status &= ~IRQ_PENDING;
- }
- desc->status &= ~IRQ_INPROGRESS;
-
-out:
- /*
- * The ->end() handler has to deal with interrupts which got
- * disabled while the handler was running.
- */
- desc->irq_data.chip->end(irq);
- raw_spin_unlock(&desc->lock);
-
- return 1;
-}
-#endif