x86: improve the 32 bit Frame Pointer backtracer to also use the traditional backtrace

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The 32 bit Frame Pointer backtracer code checks if the EBP is valid
to do a backtrace; however currently on a failure it just gives up
and prints nothing. That's not very nice; we can do better and still
print a decent backtrace.

This patch changes the backtracer to use the regular backtracing algorithm
at the same time as the EBP backtracer; the EBP backtracer is basically
used to figure out which part of the backtrace are reliable vs those
which are likely to be noise.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

...

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Arjan van de Ven 2008-01-30 13:33:07 +01:00 • committed by Ingo Molnar

parent bc850d6b37

commit e9d4efddbe

1 changed files with 20 additions and 24 deletions

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arch/x86/kernel/traps_32.c

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