powerpc/livepatch: small cleanups in save_stack_trace_tsk_reliable()

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Mostly cosmetic changes:

- Group common stack pointer code at the top
- Simplify the first frame logic
- Code stackframe iteration into for...loop construct
- Check for trace->nr_entries overflow before adding any into the array

Suggested-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Joe Lawrence 2019-01-22 10:57:23 -05:00 • committed by Michael Ellerman

parent 18be37603d

commit 29a77bbb0c

1 changed files with 14 additions and 26 deletions

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arch/powerpc/kernel/stacktrace.c

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