s390/debug: Add a reverse mode for debug_dump()

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In this mode debug_dump() writes the debug log starting at the newest
entry followed by earlier entries. To this end add a debug_prev_entry()
helper analogous to debug_next_entry() a helper to get the latest entry
which is one before the active entry and a helper to iterate either
forward or backward.

Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Co-developed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

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Niklas Schnelle 2024-12-13 14:47:32 +01:00 • committed by Alexander Gordeev

parent 5f952dae48

commit dc18c81a57

2 changed files with 86 additions and 3 deletions

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2

arch/s390/include/asm/debug.h

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87

arch/s390/kernel/debug.c

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