From: Mark Rutland <mark.rutl...@arm.com> Date: Wed, 14 Aug 2019 11:41:28 +0100
> The sparc perf_callchain_user() functions looks at current->mm, > apparently to determine whether the thread is a kthread without any > valid user context. > > In general, a non-NULL current->mm doesn't imply that current is a > kthread, as kthreads can install an mm via use_mm(), and so it's > preferable to use is_kthread() to determine whether a thread is a > kthread. > > For consistency, let's use is_kthread() here. > > Signed-off-by: Mark Rutland <mark.rutl...@arm.com> Acked-by: David S. Miller <da...@davemloft.net>
