Ptdump extension module incompatibility with Linux version >=5.5

[Linu Cherian <lcherian@xxxxxxxxxxx>]

Hi,

 

While experimenting  ptdump extension module with Kernel version 5.8.x ,  came across few incompatibility issues.

 

struct ring_buffer got renamed to struct perf_buffer starting from kernel version 5.5 and seems the latest ptdump extension

available here is  https://github.com/crash-utility/crash-extensions/raw/master/ptdump-1.0.7.tar.gz not updated and still

uses the “struct ring_buffer”.

 

Hence,

 “/* array of struct pages for pt buffer */

        if(!get_member(struct_ring_buffer, "ring_buffer", "aux_pages",

                       &aux_pages))

                return FALSE;”

 

was failing in ptdump.c

 

Few questions.

 

1. Do we have a extension module maintained somewhere else that supports the later kernels >=5.5
2. How do we usually manage such incompatibility issues (dependency on Kernel structures)?

        Was trying to explore the arm64 solution in line with ptdump.

 

Thanks.

 

 

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