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When debugging interrupt handlers is enabled, keep count of handled irq for each handler, to ease tracking which driver is unfriendly to others for shared irqs.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33614 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol 2009-10-17 12:05:02 +00:00
parent 766c94da2a
commit 8be612127e
1 changed files with 11 additions and 2 deletions
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13
src/system/kernel/int.c
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@ -37,6 +37,9 @@ struct io_handler {
void *data;
bool use_enable_counter;
bool no_handled_info;
#if DEBUG_INTERRUPTS
int64 handled_count;
#endif
};
struct io_vector {
@ -86,8 +89,8 @@ dump_int_statistics(int argc, char **argv)
if (strchr(imageName, '/') != NULL)
imageName = strrchr(imageName, '/') + 1;
kprintf("\t%s:%s (%p), data %p\n", imageName, symbol, io->func,
io->data);
kprintf("\t%s:%s (%p), data %p, handled %8lld\n", imageName, symbol, io->func,
io->data, io->handled_count);
} else
kprintf("\t%p, data %p\n", io->func, io->data);
}
@ -195,6 +198,9 @@ int_io_interrupt_handler(int vector, bool levelTriggered)
handled = true;
else if (status == B_INVOKE_SCHEDULER)
invokeScheduler = true;
#if DEBUG_INTERRUPTS
io->handled_count++;
#endif
}
#if DEBUG_INTERRUPTS
@ -300,6 +306,9 @@ install_io_interrupt_handler(long vector, interrupt_handler handler, void *data,
io->data = data;
io->use_enable_counter = (flags & B_NO_ENABLE_COUNTER) == 0;
io->no_handled_info = (flags & B_NO_HANDLED_INFO) != 0;
#if DEBUG_INTERRUPTS
io->handled_count = 0LL;
#endif
// Disable the interrupts, get the spinlock for this irq only
// and then insert the handler