Eric Lee / smarc-ti-linux-kernel

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Commit ab7798ffcf98b11a9525cf65bacdae3fd58d357f

Authored by Thomas Gleixner
1 parent 08f1b80735
Exists in master and in 20 other branches dlt-processor-sdk-linux-03.00.00.04, newt-ti-linux-3.12.y, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.12.10, smarc-ti-linux-3.12.y, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.12.y, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

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>

Showing 3 changed files with 22 additions and 1 deletions Side-by-side Diff

... ... @@ -28,6 +28,7 @@
28 28 #include <asm/ptrace.h>
29 29 #include <asm/irq_regs.h>
30 30  
  31 +struct seq_file;
31 32 struct irq_desc;
32 33 struct irq_data;
33 34 typedef void (*irq_flow_handler_t)(unsigned int irq,
... ... @@ -270,6 +271,7 @@
270 271 * @irq_set_wake: enable/disable power-management wake-on of an IRQ
271 272 * @irq_bus_lock: function to lock access to slow bus (i2c) chips
272 273 * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
  274 + * @irq_print_chip: optional to print special chip info in show_interrupts
273 275 * @flags: chip specific flags
274 276 *
275 277 * @release: release function solely used by UML
... ... @@ -316,6 +318,8 @@
316 318  
317 319 void (*irq_bus_lock)(struct irq_data *data);
318 320 void (*irq_bus_sync_unlock)(struct irq_data *data);
  321 +
  322 + void (*irq_print_chip)(struct irq_data *data, struct seq_file *p);
319 323  
320 324 unsigned long flags;
321 325  
... ... @@ -31,6 +31,10 @@
31 31 config GENERIC_IRQ_SHOW
32 32 bool
33 33  
  34 +# Print level/edge extra information
  35 +config GENERIC_IRQ_SHOW_LEVEL
  36 + bool
  37 +
34 38 # Support for delayed migration from interrupt context
35 39 config GENERIC_PENDING_IRQ
36 40 bool
... ... @@ -404,7 +404,20 @@
404 404 seq_printf(p, "%*d: ", prec, i);
405 405 for_each_online_cpu(j)
406 406 seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
407   - seq_printf(p, " %8s", desc->irq_data.chip->name);
  407 +
  408 + if (desc->irq_data.chip) {
  409 + if (desc->irq_data.chip->irq_print_chip)
  410 + desc->irq_data.chip->irq_print_chip(&desc->irq_data, p);
  411 + else if (desc->irq_data.chip->name)
  412 + seq_printf(p, " %8s", desc->irq_data.chip->name);
  413 + else
  414 + seq_printf(p, " %8s", "-");
  415 + } else {
  416 + seq_printf(p, " %8s", "None");
  417 + }
  418 +#ifdef CONFIG_GENIRC_IRQ_SHOW_LEVEL
  419 + seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");
  420 +#endif
408 421 if (desc->name)
409 422 seq_printf(p, "-%-8s", desc->name);
410 423