Re: [PATCH] ftrace: protect running nmi (V3)

[Steven Rostedt]

On Wed, 2009-03-18 at 16:42 +0800, Lai Jiangshan wrote:

>  
> +static void wait_for_nmi_and_set_mod_flag(void)
> +{
> +	if (!atomic_cmpxchg(&nmi_running, 0, MOD_CODE_WRITE_FLAG))
> +		rerurn;

You might want to compile check patches before sending. I'll look this
patch over in detail, and make the necessary fixes.

-- Steve

> +
> +	do {
> +		cpu_relax();
> +	} while (atomic_cmpxchg(&nmi_running, 0, MOD_CODE_WRITE_FLAG));
> +
> +	nmi_wait_count++;
> +}
> +

--
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/