softirq: Avoid bad tracing / lockdep interaction
Similar to commit: 1a63dcd8 ("softirq: Reorder trace_softirqs_on to prevent lockdep splat") __local_bh_enable_ip() can also call into tracing with inconsistent state. Unlike that commit we don't need to bother about the tracepoint because 'cnt-1' never matches preempt_count() (by construction). Reported-by:Heiko Carstens <hca@linux.ibm.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by:
Heiko Carstens <hca@linux.ibm.com> Link: https://lkml.kernel.org/r/20201218154519.GW3092@hirez.programming.kicks-ass.net
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