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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-03-25 16:48:50 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-03-25 17:04:20 +0100 |
| commit | ab7798ffcf98b11a9525cf65bacdae3fd58d357f (patch) | |
| tree | 834ed73e8ab309895934bcf8bfe9e531ec10b32b | |
| parent | 08f1b807355c8d355885a71e7fd462fe9d499411 (diff) | |
| download | linux-ab7798ffcf98b11a9525cf65bacdae3fd58d357f.tar.gz linux-ab7798ffcf98b11a9525cf65bacdae3fd58d357f.tar.bz2 linux-ab7798ffcf98b11a9525cf65bacdae3fd58d357f.zip | |
genirq: Expand generic show_interrupts()
Some archs want to print extra information for certain irq_chips which
is per irq and not per chip. Allow them to provide a chip callback to
print the chip name and the extra information.
PowerPC wants to print the LEVEL/EDGE type information. Make it configurable.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/irq.h | 4 | ||||
| -rw-r--r-- | kernel/irq/Kconfig | 4 | ||||
| -rw-r--r-- | kernel/irq/proc.c | 15 |
3 files changed, 22 insertions, 1 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 1d3577f30d45..5d876c9b3a3d 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -28,6 +28,7 @@ #include <asm/ptrace.h> #include <asm/irq_regs.h> +struct seq_file; struct irq_desc; struct irq_data; typedef void (*irq_flow_handler_t)(unsigned int irq, @@ -270,6 +271,7 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d) * @irq_set_wake: enable/disable power-management wake-on of an IRQ * @irq_bus_lock: function to lock access to slow bus (i2c) chips * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips + * @irq_print_chip: optional to print special chip info in show_interrupts * @flags: chip specific flags * * @release: release function solely used by UML @@ -317,6 +319,8 @@ struct irq_chip { void (*irq_bus_lock)(struct irq_data *data); void (*irq_bus_sync_unlock)(struct irq_data *data); + void (*irq_print_chip)(struct irq_data *data, struct seq_file *p); + unsigned long flags; /* Currently used only by UML, might disappear one day.*/ diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 09bef82d74cb..00f2c037267a 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -31,6 +31,10 @@ config GENERIC_IRQ_PROBE config GENERIC_IRQ_SHOW bool +# Print level/edge extra information +config GENERIC_IRQ_SHOW_LEVEL + bool + # Support for delayed migration from interrupt context config GENERIC_PENDING_IRQ bool diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 760248de109d..626d092eed9a 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -404,7 +404,20 @@ int show_interrupts(struct seq_file *p, void *v) seq_printf(p, "%*d: ", prec, i); for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); - seq_printf(p, " %8s", desc->irq_data.chip->name); + + if (desc->irq_data.chip) { + if (desc->irq_data.chip->irq_print_chip) + desc->irq_data.chip->irq_print_chip(&desc->irq_data, p); + else if (desc->irq_data.chip->name) + seq_printf(p, " %8s", desc->irq_data.chip->name); + else + seq_printf(p, " %8s", "-"); + } else { + seq_printf(p, " %8s", "None"); + } +#ifdef CONFIG_GENIRC_IRQ_SHOW_LEVEL + seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge"); +#endif if (desc->name) seq_printf(p, "-%-8s", desc->name); |