Messages in this thread | | | Date | Wed, 14 Aug 2019 12:26:18 -0400 (EDT) | Subject | Re: [PATCH 6/9] sparc/perf: correctly check for kthreads | From | David Miller <> |
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From: Mark Rutland <mark.rutland@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.rutland@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
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