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85e3e7fbbb
All NMI contexts are handled the same as the safe context: store the
message and defer printing. There is no need to have special NMI
context tracking for this. Using in_nmi() is enough.
There are several parts of the kernel that are manually calling into
the printk NMI context tracking in order to cause general printk
deferred printing:
arch/arm/kernel/smp.c
arch/powerpc/kexec/crash.c
kernel/trace/trace.c
For arm/kernel/smp.c and powerpc/kexec/crash.c, provide a new
function pair printk_deferred_enter/exit that explicitly achieves the
same objective.
For ftrace, remove the printk context manipulation completely. It was
added in commit
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| .. | ||
| braille.c | ||
| braille.h | ||
| console_cmdline.h | ||
| internal.h | ||
| Makefile | ||
| printk_ringbuffer.c | ||
| printk_ringbuffer.h | ||
| printk_safe.c | ||
| printk.c | ||