path: root/drivers
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authorDaniel Thompson <daniel.thompson@linaro.org>2015-01-12 15:42:24 +0000
committerDaniel Thompson <daniel.thompson@linaro.org>2015-03-18 14:17:54 +0000
commitd9e2a965e0abfe9a4a91f595a368aaa1698445b2 (patch)
treed06c5591ef7b93cb7a23b7fee71c8846691ce5d4 /drivers
parent565c9e700544547c024ffde25732037455a17bba (diff)
printk: Simple implementation for NMI backtracing
Currently there is a quite a pile of code sitting in arch/x86/kernel/apic/hw_nmi.c to support safe all-cpu backtracing from NMI. The code is inaccessible to backtrace implementations for other architectures, which is a shame because they would probably like to be safe too. Copy this code into printk, reworking it a little as we do so to make it easier to exploit as library code. We'll port the x86 NMI backtrace logic to it in a later patch. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Diffstat (limited to 'drivers')
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