Re: real time hang w/ latency tracing

[Ingo Molnar]

* Daniel Walker <dwalker@xxxxxxxxxx> wrote:

> Index: linux-2.6.20/include/linux/serial_core.h
> ===================================================================
> --- linux-2.6.20.orig/include/linux/serial_core.h
> +++ linux-2.6.20/include/linux/serial_core.h
> @@ -213,7 +213,11 @@ struct uart_icount {
>  typedef unsigned int __bitwise__ upf_t;
>  
>  struct uart_port {
> +#ifdef CONFIG_LATENCY_TIMING
> +	raw_spinlock_t		lock;			/* port lock */
> +#else
>  	spinlock_t		lock;			/* port lock */
> +#endif

ugh - this will only cause other problems if anyone else is trying to 
use the serial code. This needs a cleaner fix - such as not doing that 
printk from atomic context.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/