[Crash-utility] Re: [PATCH 0/3] RISCV64: enhance bt command

[Lianbo Jiang <lijiang@xxxxxxxxxx>]

Hi, Song

On 12/14/23 13:07, devel-request@xxxxxxxxxxxxxxxxxxxxxxxxxxx wrote:
> Date: Wed, 13 Dec 2023 17:45:05 +0800
> From: Song Shuai<songshuaishuai@xxxxxxxxxxx>
> Subject:  [PATCH 0/3] RISCV64: enhance bt command
> To:k-hagio-ab@xxxxxxx,xianting.tian@xxxxxxxxxxxxxxxxx
> Cc:devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx, Song Shuai
> 	<songshuaishuai@xxxxxxxxxxx>
> Message-ID:<20231213094508.693236-1-songshuaishuai@xxxxxxxxxxx>
>
> hi,
>
> This series enhances the bt command for RISCV64 by making bt aware of
> - possible kernel and user exception frames (bt -e)
> - per-cpu IRQ stacks (bt for vmcore crashed in irq stack, bt -E)
> - per-cpu overflow stacks (bt for vmcore caused by kernel stack overflow)
>
> This series is based on the "RISCV64: Fix 'bt' output when no ra on
> the stack top" patch sent a few days ago. You can get them all from my Github repo:
>
> https://github.com/sugarfillet/crash/commits/rv64-bt-enhance/

Could you please provide the patched kexec-tools(link) for riscv64?(if 
possible, please give the test steps)

It can help me to do some tests quickly.


Thanks.

Lianbo

> The detailed test report can be found in each patch's commit-msg and
> all these tests passed on the RV64 Qemu-virt and with RISC-V Linux v6.6.
>
> Here is the abstract of these three patches:
>
> Patch1 :
>       RISCV64: Add support for 'bt -e' option
>      
>      With this patch we can search the stack for possible kernel and user
>      mode exception frames via 'bt -e' command.
>      
> Patch2 :
>       RISCV64: Add per-cpu IRQ stacks support
>      
>      This patch introduces per-cpu IRQ stacks for RISCV64 to let
>      "bt" do backtrace on it and 'bt -E' search eframes on it,
>      and the 'help -m' command displays the addresses of each
>      per-cpu IRQ stack.
>      
> Patch3:
>       RISCV64: Add per-cpu overflow stacks support
>      
>      The patch introduces per-cpu overflow stacks for RISCV64 to let
>      "bt" do backtrace on it and the 'help -m' command dispalys the
>      addresss of each per-cpu overflow stack.
>
> Song Shuai (3):
>     RISCV64: Add support for 'bt -e' option
>     RISCV64: Add per-cpu IRQ stacks support
>     RISCV64: Add per-cpu overflow stacks support
>
>   defs.h    |  30 +++-
>   help.c    |   2 +-
>   riscv64.c | 492 +++++++++++++++++++++++++++++++++++++++++++++++++++---
>   3 files changed, 494 insertions(+), 30 deletions(-)
>
> -- 2.20.1
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