Re: [PATCH] writeback: call writeback tracepoints withoud holding list_lock in wb_writeback()

[Steven Rostedt]

On Thu, 25 Feb 2016 15:54:13 -0800
"Shi, Yang" <yang.shi@xxxxxxxxxx> wrote:


> Can we disable irqs in tracepoints since spin_lock_irqsave is used by 
> kernfs_* functions.

Disabling preemption or irqs is fine a tracepoint. You just can't
sleep, which spin_lock_irqsave() would do on the -rt kernel.

-- Steve