[PATCH] Add support lockless printk ringbuffer
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Kernel 5.10 introduce new lockless printk ringbuffer.
This patch dump the new log record, with:
1. treat caller_id as dict info
2. no dev_info support, because no user yet
3. only 5.10 finalized format, not intermit impl in git-tree
This patch unified vmcore & symbol version:
1. vmcore version pre-read prb ptr value
2. pass desired readmem addrtype
https://github.com/crash-utility/crash/pull/71
Attachments:
- attachment.html (text/html — 3.6 KB)
On Sat, Nov 21, 2020 at 9:36 AM samuelliao(廖生苗) <samuelliao(a)tencent.com> wrote:
Kernel 5.10 introduce new lockless printk ringbuffer.
This patch dump the new log record, with:
treat caller_id as dict info
no dev_info support, because no user yet
only 5.10 finalized format, not intermit impl in git-tree
This patch unified vmcore & symbol version:
vmcore version pre-read prb ptr value
pass desired readmem addrtype
https://github.com/crash-utility/crash/pull/71
Thank you for working on this and the patch.
But sorry, John (the author of the lockless ringbuffer) posted before
an RFC crash patch for it
for us and I think it's easy to read and maintain enough, so I would
like to implement it based
on his patch and posted an updated patch [1]. If you have any
comments, please let us know.
[1] https://www.redhat.com/archives/crash-utility/2020-November/msg00065.html
Thanks,
Kazu
1393
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Kazuhito Hagio -
samuelliao(廖生苗)