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added debugging code, can be disabled, currently enabled

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14669 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Marcus Overhagen
2005-11-03 21:03:06 +00:00
parent 2a192f1266
commit 93d0c77a96
1 changed files with 45 additions and 0 deletions
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src/system/kernel/int.c
+45
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@@ -24,6 +24,7 @@
# define TRACE(x) ;
#endif
#define DEBUG_INT
struct io_handler {
struct io_handler *next;
@@ -37,6 +38,10 @@ struct io_vector {
struct io_handler handler_list;
spinlock vector_lock;
int32 enable_count;
#ifdef DEBUG_INT
int64 handled_count;
int64 unhandled_count;
#endif
};
static struct io_vector io_vectors[NUM_IO_VECTORS];
@@ -63,6 +68,31 @@ interrupts_enabled(void)
}
#ifdef DEBUG_INT
static int
dump_int_statistics(int argc, char **argv)
{
int i;
for (i = 0; i < NUM_IO_VECTORS; i++) {
if (io_vectors[i].vector_lock == 0
&& io_vectors[i].enable_count == 0
&& io_vectors[i].handled_count == 0
&& io_vectors[i].unhandled_count == 0
&& io_vectors[i].handler_list.next == &io_vectors[i].handler_list)
continue;
kprintf("int %3d, enabled %ld, handled %8lld, unhandled %8lld%s%s\n",
i,
io_vectors[i].enable_count,
io_vectors[i].handled_count,
io_vectors[i].unhandled_count,
(io_vectors[i].vector_lock != 0) ? ", ACTIVE" : "",
(io_vectors[i].handler_list.next == &io_vectors[i].handler_list) ? ", no handler" : "");
}
return 0;
}
#endif
status_t
int_init(kernel_args *args)
{
@@ -81,9 +111,17 @@ int_init_post_vm(kernel_args *args)
for (i = 0; i < NUM_IO_VECTORS; i++) {
io_vectors[i].vector_lock = 0; /* initialize spinlock */
io_vectors[i].enable_count = 0;
#ifdef DEBUG_INT
io_vectors[i].handled_count = 0;
io_vectors[i].unhandled_count = 0;
#endif
initque(&io_vectors[i].handler_list); /* initialize handler queue */
}
#ifdef DEBUG_INT
add_debugger_command("ints", &dump_int_statistics, "list interrupt statistics");
#endif
return arch_int_init_post_vm(args);
}
@@ -228,6 +266,13 @@ int_io_interrupt_handler(int vector)
break;
}
#ifdef DEBUG_INT
if (status != B_UNHANDLED_INTERRUPT)
io_vectors[vector].handled_count++;
else
io_vectors[vector].unhandled_count++;
#endif
release_spinlock(&io_vectors[vector].vector_lock);
return status;