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authorArjan van de Ven <arjan@linux.intel.com>2008-01-30 13:33:07 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:07 +0100
commit80b51f310b6f55006a265d087b8f48744e65663d (patch)
tree49826076129eaa61db1bbbc259382a297c77491b /kernel/backtracetest.c
parente4a94568b18c5d7d72741ebde5736d77d235743c (diff)
x86: use the stack frames to get exact stack-traces for CONFIG_FRAMEPOINTER on x86-64
x86 32 bit already has this feature: This patch uses the stack frames with frame pointer into an exact stack trace, by following the frame pointer. This only affects kernels built with the CONFIG_FRAME_POINTER config option enabled, and greatly reduces the amount of noise in oopses. This code uses the traditional method of doing backtraces, but if it finds a valid frame pointer chain, will use that to show which parts of the backtrace are reliable and which parts are not Due to the fragility and importance of the backtrace code, this needs to be well reviewed and well tested before merging into mainlne. 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>
Diffstat (limited to 'kernel/backtracetest.c')
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