[Crash-utility] [PATCH] MIPS32/64: Add 'irq' command support
Added support for the 'irq' series of commands in the MIPS32/64 architecture,
except for the 'irq -d' command, others can be used.
The result of using the 'irq' command without this patch is as follows:
irq: cannot determine number of IRQs
Signed-off-by: Youling Tang <tangyouling(a)loongson.cn>
---
mips.c | 10 ++++++++--
mips64.c | 14 ++++++++++++++
2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/mips.c b/mips.c
index f73dfad..d6602e3 100644
--- a/mips.c
+++ b/mips.c
@@ -1126,8 +1126,14 @@ mips_init(int when)
machdep->get_irq_affinity = generic_get_irq_affinity;
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
- ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
- "irq_desc", NULL, 0);
+
+ if (symbol_exists("irq_desc"))
+ ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
+ "irq_desc", NULL, 0);
+ else if (kernel_symbol_exists("nr_irqs"))
+ get_symbol_data("nr_irqs", sizeof(unsigned int),
+ &machdep->nr_irqs);
+
mips_stackframe_init();
if (!machdep->hz)
diff --git a/mips64.c b/mips64.c
index 62ed799..b1d6acf 100644
--- a/mips64.c
+++ b/mips64.c
@@ -1160,6 +1160,9 @@ mips64_dump_machdep_table(ulong arg)
fprintf(fp, " is_task_addr: mips64_is_task_addr()\n");
fprintf(fp, " verify_symbol: mips64_verify_symbol()\n");
fprintf(fp, " dis_filter: generic_dis_filter()\n");
+ fprintf(fp, " dump_irq: generic_dump_irq()\n");
+ fprintf(fp, " show_interrupts: generic_show_interrupts()\n");
+ fprintf(fp, " get_irq_affinity: generic_get_irq_affinity()\n");
fprintf(fp, " cmd_mach: mips64_cmd_mach()\n");
fprintf(fp, " get_smp_cpus: mips64_get_smp_cpus()\n");
fprintf(fp, " is_kvaddr: generic_is_kvaddr()\n");
@@ -1246,6 +1249,9 @@ mips64_init(int when)
machdep->is_task_addr = mips64_is_task_addr;
machdep->get_smp_cpus = mips64_get_smp_cpus;
machdep->dis_filter = generic_dis_filter;
+ machdep->dump_irq = generic_dump_irq;
+ machdep->show_interrupts = generic_show_interrupts;
+ machdep->get_irq_affinity = generic_get_irq_affinity;
machdep->value_to_symbol = generic_machdep_value_to_symbol;
machdep->init_kernel_pgd = NULL;
break;
@@ -1257,6 +1263,14 @@ mips64_init(int when)
mips64_stackframe_init();
if (!machdep->hz)
machdep->hz = 250;
+
+ if (symbol_exists("irq_desc"))
+ ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
+ "irq_desc", NULL, 0);
+ else if (kernel_symbol_exists("nr_irqs"))
+ get_symbol_data("nr_irqs", sizeof(unsigned int),
+ &machdep->nr_irqs);
+
MEMBER_OFFSET_INIT(elf_prstatus_pr_reg, "elf_prstatus",
"pr_reg");
STRUCT_SIZE_INIT(note_buf, "note_buf_t");
--
2.1.0