printk in interrupt handler

David Stroupe
2002-04-30T17:57:09Z

I am writing a device driver that responds to interrupts on my custom
device. I have a user-space application that talks to this driver. I
am debugging the user space code using gdb. If I place a breakpoint in
my user code at the first instruction that should be executed after
receipt of an interrupt, I get my breakpoint. Within my driver I have
printk's placed in the handler and in the blocked read instruction that
would give me additional info about the source of the interrupt, irq
status register etc, byt these printk's never appear. Obviously since
the blocked I/O releases, these instructions must be getting executed.
Are these printk commands not flushed due to the debugger's influence?
Is there a way for me to flush them more quickly so that I may view
them with dmesg (or looking at the messages file)?

TIA

--
Best regards,
David Stroupe
Keyed-Up Software