powerpc: Add trap_nr to thread_struct

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Add thread_struct.trap_nr and use it to store the last exception
the thread experienced. In this patch, we populate the field at
various places where we force_sig_info() to the process.

This is also used in uprobes to determine if the probed instruction
caused an exception.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Ananth N Mavinakayanahalli 2012-08-23 21:27:09 +00:00 • committed by Benjamin Herrenschmidt

parent 7118e7e648

commit 41ab5266c3

4 changed files with 5 additions and 0 deletions

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1

arch/powerpc/include/asm/processor.h

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2

arch/powerpc/kernel/process.c

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1

arch/powerpc/kernel/traps.c

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1

arch/powerpc/mm/fault.c

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