[ Upstream commitce0f17fc93] One should use in_serving_softirq() to detect SoftIRQ context. Fixes:96f6d44443("perf_counter: avoid recursion") Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20201030151955.120572175@infradead.org Signed-off-by: Sasha Levin <sashal@kernel.org>