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Message-ID: <20060929200521.GA30660@elte.hu>
Date: Fri, 29 Sep 2006 22:05:21 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Andrew Morton <akpm@...l.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
linux-kernel@...r.kernel.org
Subject: [patch] genirq: clean up irq-flow-type naming
Subject: genirq: clean up irq-flow-type naming
From: Ingo Molnar <mingo@...e.hu>
introduce desc->name and eliminate the handle_irq_name() hack.
Add set_irq_chip_and_handler_name() to set the flow type and
name at once.
Signed-off-by: Ingo Molnar <mingo@...e.hu>
--
arch/i386/kernel/i8259.c | 7 +++--
arch/i386/kernel/io_apic.c | 17 ++++++++------
arch/i386/kernel/irq.c | 2 -
arch/x86_64/kernel/i8259.c | 7 +++--
arch/x86_64/kernel/io_apic.c | 15 ++++++------
arch/x86_64/kernel/irq.c | 2 -
include/asm-parisc/irq-handlers.h | 7 -----
include/linux/irq.h | 26 +++++++++++----------
kernel/irq/chip.c | 46 ++++++++++----------------------------
9 files changed, 55 insertions(+), 74 deletions(-)
Index: linux-hrt-mm.q/arch/i386/kernel/i8259.c
===================================================================
--- linux-hrt-mm.q.orig/arch/i386/kernel/i8259.c
+++ linux-hrt-mm.q/arch/i386/kernel/i8259.c
@@ -113,7 +113,8 @@ void make_8259A_irq(unsigned int irq)
{
disable_irq_nosync(irq);
io_apic_irqs &= ~(1<<irq);
- set_irq_chip_and_handler(irq, &i8259A_chip, handle_level_irq);
+ set_irq_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
+ "XT");
enable_irq(irq);
}
@@ -369,8 +370,8 @@ void __init init_ISA_irqs (void)
/*
* 16 old-style INTA-cycle interrupts:
*/
- set_irq_chip_and_handler(i, &i8259A_chip,
- handle_level_irq);
+ set_irq_chip_and_handler_name(i, &i8259A_chip,
+ handle_level_irq, "XT");
} else {
/*
* 'high' PCI IRQs filled in on demand
Index: linux-hrt-mm.q/arch/i386/kernel/io_apic.c
===================================================================
--- linux-hrt-mm.q.orig/arch/i386/kernel/io_apic.c
+++ linux-hrt-mm.q/arch/i386/kernel/io_apic.c
@@ -1225,11 +1225,11 @@ static void ioapic_register_intr(int irq
{
if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
trigger == IOAPIC_LEVEL)
- set_irq_chip_and_handler(irq, &ioapic_chip,
- handle_fasteoi_irq);
+ set_irq_chip_and_handler_name(irq, &ioapic_chip,
+ handle_fasteoi_irq, "fasteoi");
else
- set_irq_chip_and_handler(irq, &ioapic_chip,
- handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &ioapic_chip,
+ handle_edge_irq, "edge");
set_intr_gate(vector, interrupt[irq]);
}
@@ -2235,7 +2235,8 @@ static inline void check_timer(void)
printk(KERN_INFO "...trying to set up timer as Virtual Wire IRQ...");
disable_8259A_irq(0);
- set_irq_chip_and_handler(0, &lapic_chip, handle_fasteoi_irq);
+ set_irq_chip_and_handler_name(0, &lapic_chip, handle_fasteoi_irq,
+ "fasteio");
apic_write_around(APIC_LVT0, APIC_DM_FIXED | vector); /* Fixed mode */
enable_8259A_irq(0);
@@ -2541,7 +2542,8 @@ int arch_setup_msi_irq(unsigned int irq,
write_msi_msg(irq, &msg);
- set_irq_chip_and_handler(irq, &msi_chip, handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq,
+ "edge");
return 0;
}
@@ -2636,7 +2638,8 @@ int arch_setup_ht_irq(unsigned int irq,
write_ht_irq_low(irq, low);
write_ht_irq_high(irq, high);
- set_irq_chip_and_handler(irq, &ht_irq_chip, handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &ht_irq_chip,
+ handle_edge_irq, "edge");
}
return vector;
}
Index: linux-hrt-mm.q/arch/i386/kernel/irq.c
===================================================================
--- linux-hrt-mm.q.orig/arch/i386/kernel/irq.c
+++ linux-hrt-mm.q/arch/i386/kernel/irq.c
@@ -256,7 +256,7 @@ int show_interrupts(struct seq_file *p,
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
#endif
seq_printf(p, " %8s", irq_desc[i].chip->name);
- seq_printf(p, "-%s", handle_irq_name(irq_desc[i].handle_irq));
+ seq_printf(p, "-%-8s", irq_desc[i].name);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
Index: linux-hrt-mm.q/arch/x86_64/kernel/i8259.c
===================================================================
--- linux-hrt-mm.q.orig/arch/x86_64/kernel/i8259.c
+++ linux-hrt-mm.q/arch/x86_64/kernel/i8259.c
@@ -178,7 +178,8 @@ void make_8259A_irq(unsigned int irq)
{
disable_irq_nosync(irq);
io_apic_irqs &= ~(1<<irq);
- set_irq_chip_and_handler(irq, &i8259A_chip, handle_level_irq);
+ set_irq_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
+ "XT");
enable_irq(irq);
}
@@ -431,8 +432,8 @@ void __init init_ISA_irqs (void)
/*
* 16 old-style INTA-cycle interrupts:
*/
- set_irq_chip_and_handler(i, &i8259A_chip,
- handle_level_irq);
+ set_irq_chip_and_handler_name(i, &i8259A_chip,
+ handle_level_irq, "XT");
} else {
/*
* 'high' PCI IRQs filled in on demand
Index: linux-hrt-mm.q/arch/x86_64/kernel/io_apic.c
===================================================================
--- linux-hrt-mm.q.orig/arch/x86_64/kernel/io_apic.c
+++ linux-hrt-mm.q/arch/x86_64/kernel/io_apic.c
@@ -649,11 +649,11 @@ static void ioapic_register_intr(int irq
{
if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
trigger == IOAPIC_LEVEL)
- set_irq_chip_and_handler(irq, &ioapic_chip,
- handle_fasteoi_irq);
+ set_irq_chip_and_handler_name(irq, &ioapic_chip,
+ handle_fasteoi_irq, "fasteoi");
else
- set_irq_chip_and_handler(irq, &ioapic_chip,
- handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &ioapic_chip,
+ handle_edge_irq, "edge");
}
static void __init setup_IO_APIC_irqs(void)
@@ -761,7 +761,7 @@ static void __init setup_ExtINT_IRQ0_pin
* The timer IRQ doesn't have to know that behind the
* scene we have a 8259A-master in AEOI mode ...
*/
- set_irq_chip_and_handler(0, &ioapic_chip, handle_edge_irq);
+ set_irq_chip_and_handler_name(0, &ioapic_chip, handle_edge_irq, "edge");
/*
* Add it to the IO-APIC irq-routing table:
@@ -1797,7 +1797,7 @@ int arch_setup_msi_irq(unsigned int irq,
write_msi_msg(irq, &msg);
- set_irq_chip_and_handler(irq, &msi_chip, handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge");
return 0;
}
@@ -1898,7 +1898,8 @@ int arch_setup_ht_irq(unsigned int irq,
write_ht_irq_low(irq, low);
write_ht_irq_high(irq, high);
- set_irq_chip_and_handler(irq, &ht_irq_chip, handle_edge_irq);
+ set_irq_chip_and_handler_name(irq, &ht_irq_chip,
+ handle_edge_irq, "edge");
}
return vector;
}
Index: linux-hrt-mm.q/arch/x86_64/kernel/irq.c
===================================================================
--- linux-hrt-mm.q.orig/arch/x86_64/kernel/irq.c
+++ linux-hrt-mm.q/arch/x86_64/kernel/irq.c
@@ -75,7 +75,7 @@ int show_interrupts(struct seq_file *p,
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
#endif
seq_printf(p, " %8s", irq_desc[i].chip->name);
- seq_printf(p, "-%s", handle_irq_name(irq_desc[i].handle_irq));
+ seq_printf(p, "-%-8s", irq_desc[i].name);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
Index: linux-hrt-mm.q/include/asm-parisc/irq-handlers.h
===================================================================
--- linux-hrt-mm.q.orig/include/asm-parisc/irq-handlers.h
+++ linux-hrt-mm.q/include/asm-parisc/irq-handlers.h
@@ -6,10 +6,3 @@ HANDLE_SPECIFIC_IRQ(_ipi, cpu_ack_irq, c
#ifdef CONFIG_IOSAPIC
HANDLE_LEVEL_IRQ(_iosapic, cpu_ack_irq, iosapic_end_irq)
#endif
-
-static inline char *arch_handle_irq_name(void fastcall (*handle)(unsigned int,
- struct irq_desc *,
- struct pt_regs *))
-{
- return NULL;
-}
Index: linux-hrt-mm.q/include/linux/irq.h
===================================================================
--- linux-hrt-mm.q.orig/include/linux/irq.h
+++ linux-hrt-mm.q/include/linux/irq.h
@@ -135,6 +135,7 @@ struct irq_chip {
* @pending_mask: pending rebalanced interrupts
* @dir: /proc/irq/ procfs entry
* @affinity_entry: /proc/irq/smp_affinity procfs entry on SMP
+ * @name: flow handler name for /proc/interrupts output
*
* Pad this out to 32 bytes for cache and indexing reasons.
*/
@@ -161,8 +162,9 @@ struct irq_desc {
cpumask_t pending_mask;
#endif
#ifdef CONFIG_PROC_FS
- struct proc_dir_entry *dir;
+ struct proc_dir_entry *dir;
#endif
+ const char *name;
} ____cacheline_aligned;
extern struct irq_desc irq_desc[NR_IRQS];
@@ -279,14 +281,6 @@ extern void fastcall
handle_bad_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs);
/*
- * Get a descriptive string for the highlevel handler, for
- * /proc/interrupts output:
- */
-extern const char *
-handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,
- struct pt_regs *));
-
-/*
* Monolithic do_IRQ implementation.
* (is an explicit fastcall, because i386 4KSTACKS calls it from assembly)
*/
@@ -340,10 +334,18 @@ set_irq_chip_and_handler(unsigned int ir
struct irq_desc *,
struct pt_regs *));
extern void
+set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
+ void fastcall (*handle)(unsigned int,
+ struct irq_desc *,
+ struct pt_regs *),
+ const char *name);
+
+extern void
__set_irq_handler(unsigned int irq,
void fastcall (*handle)(unsigned int, struct irq_desc *,
struct pt_regs *),
- int is_chained);
+ int is_chained,
+ const char *name);
/*
* Set a highlevel flow handler for a given IRQ:
@@ -353,7 +355,7 @@ set_irq_handler(unsigned int irq,
void fastcall (*handle)(unsigned int, struct irq_desc *,
struct pt_regs *))
{
- __set_irq_handler(irq, handle, 0);
+ __set_irq_handler(irq, handle, 0, NULL);
}
/*
@@ -366,7 +368,7 @@ set_irq_chained_handler(unsigned int irq
void fastcall (*handle)(unsigned int, struct irq_desc *,
struct pt_regs *))
{
- __set_irq_handler(irq, handle, 1);
+ __set_irq_handler(irq, handle, 1, NULL);
}
/* Handle dynamic irq creation and destruction */
Index: linux-hrt-mm.q/kernel/irq/chip.c
===================================================================
--- linux-hrt-mm.q.orig/kernel/irq/chip.c
+++ linux-hrt-mm.q/kernel/irq/chip.c
@@ -549,14 +549,7 @@ out_unlock:
HANDLE_PERCPU_IRQ(, do_ack_irq, eoi_irq)
#ifdef ARCH_HAS_IRQ_HANDLERS
-#include <asm/irq-handlers.h>
-#else
-static inline char *arch_handle_irq_name(void fastcall (*handle)(unsigned int,
- struct irq_desc *,
- struct pt_regs *))
-{
- return NULL;
-}
+# include <asm/irq-handlers.h>
#endif
@@ -564,7 +557,8 @@ void
__set_irq_handler(unsigned int irq,
void fastcall (*handle)(unsigned int, irq_desc_t *,
struct pt_regs *),
- int is_chained)
+ int is_chained,
+ const char *name)
{
struct irq_desc *desc;
unsigned long flags;
@@ -605,6 +599,7 @@ __set_irq_handler(unsigned int irq,
desc->depth = 1;
}
desc->handle_irq = handle;
+ desc->name = name;
if (handle != handle_bad_irq && is_chained) {
desc->status &= ~IRQ_DISABLED;
@@ -622,31 +617,16 @@ set_irq_chip_and_handler(unsigned int ir
struct pt_regs *))
{
set_irq_chip(irq, chip);
- __set_irq_handler(irq, handle, 0);
+ __set_irq_handler(irq, handle, 0, NULL);
}
-/*
- * Get a descriptive string for the highlevel handler, for
- * /proc/interrupts output:
- */
-const char *
-handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,
- struct pt_regs *))
+void
+set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
+ void fastcall (*handle)(unsigned int,
+ struct irq_desc *,
+ struct pt_regs *),
+ const char *name)
{
- if (handle == handle_level_irq)
- return "level ";
- if (handle == handle_fasteoi_irq)
- return "fasteoi";
- if (handle == handle_edge_irq)
- return "edge ";
- if (handle == handle_simple_irq)
- return "simple ";
-#ifdef CONFIG_SMP
- if (handle == handle_percpu_irq)
- return "percpu ";
-#endif
- if (handle == handle_bad_irq)
- return "bad ";
-
- return arch_handle_irq_name(handle);
+ set_irq_chip(irq, chip);
+ __set_irq_handler(irq, handle, 0, name);
}
-
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