mbox series

[v3,0/4] ARM: Convert to ARCH_STACKWALK

Message ID 20220727040022.139387-1-lihuafei1@huawei.com (mailing list archive)
Headers show
Series ARM: Convert to ARCH_STACKWALK | expand

Message

Li Huafei July 27, 2022, 4 a.m. UTC
This series mainly updates the ARM stack trace code to use the newer and
simpler arch_stack_walk() interface (see patches 3 and 4). Two issues
were fixed before that (see patches 1 and 2).

v3:
 - According to the discussion with Linus and Russell in v1:
   - Add a comment about "regs[1]" in patch 2, and remove the
     unnecessary ternary operator in the initialization of
     "frame->ex_frame".
   - Remove the patch "ARM: stacktrace: Allow stack trace saving for
     non-current tasks", and keep the check for not being able to
     unwind non-current tasks (including tasks running on other CPUs)
     when CONFIG_SMP=y in patch 4.
 - Rebase to linux-5.19-rc8.

v2: https://lore.kernel.org/lkml/20220713110020.85511-1-lihuafei1@huawei.com/
 - As suggested by Mark, the commit logs for patch 4 and 5 were
   refined for easy review.

v1: https://lore.kernel.org/lkml/20220712021527.109921-1-lihuafei1@huawei.com/

Li Huafei (4):
  ARM: stacktrace: Skip frame pointer boundary check for
    call_with_stack()
  ARM: stacktrace: Avoid duplicate saving of exception PC value
  ARM: stacktrace: Make stack walk callback consistent with generic code
  ARM: stacktrace: Convert stacktrace to generic ARCH_STACKWALK

 arch/arm/Kconfig                  |   1 +
 arch/arm/include/asm/stacktrace.h |   8 +-
 arch/arm/kernel/perf_callchain.c  |   9 +-
 arch/arm/kernel/return_address.c  |   9 +-
 arch/arm/kernel/stacktrace.c      | 191 ++++++++++++++----------------
 arch/arm/lib/call_with_stack.S    |   2 +
 6 files changed, 110 insertions(+), 110 deletions(-)

Comments

Li Huafei Aug. 18, 2022, 9:15 a.m. UTC | #1
On 2022/7/27 12:00, Li Huafei wrote:
> This series mainly updates the ARM stack trace code to use the newer and
> simpler arch_stack_walk() interface (see patches 3 and 4). Two issues
> were fixed before that (see patches 1 and 2).
> 
> v3:
>  - According to the discussion with Linus and Russell in v1:
>    - Add a comment about "regs[1]" in patch 2, and remove the
>      unnecessary ternary operator in the initialization of
>      "frame->ex_frame".
>    - Remove the patch "ARM: stacktrace: Allow stack trace saving for
>      non-current tasks", and keep the check for not being able to
>      unwind non-current tasks (including tasks running on other CPUs)
>      when CONFIG_SMP=y in patch 4.
>  - Rebase to linux-5.19-rc8.
> 
> v2: https://lore.kernel.org/lkml/20220713110020.85511-1-lihuafei1@huawei.com/
>  - As suggested by Mark, the commit logs for patch 4 and 5 were
>    refined for easy review.
> 
> v1: https://lore.kernel.org/lkml/20220712021527.109921-1-lihuafei1@huawei.com/
> 
> Li Huafei (4):
>   ARM: stacktrace: Skip frame pointer boundary check for
>     call_with_stack()
>   ARM: stacktrace: Avoid duplicate saving of exception PC value
>   ARM: stacktrace: Make stack walk callback consistent with generic code
>   ARM: stacktrace: Convert stacktrace to generic ARCH_STACKWALK
> 
>  arch/arm/Kconfig                  |   1 +
>  arch/arm/include/asm/stacktrace.h |   8 +-
>  arch/arm/kernel/perf_callchain.c  |   9 +-
>  arch/arm/kernel/return_address.c  |   9 +-
>  arch/arm/kernel/stacktrace.c      | 191 ++++++++++++++----------------
>  arch/arm/lib/call_with_stack.S    |   2 +
>  6 files changed, 110 insertions(+), 110 deletions(-)
> 


Hi Russell,

Do you have any more comments on this patch set? Can you add this patch
set to your patch tracker? Thanks!

Thanks,
Huafei
Linus Walleij Aug. 25, 2022, 1 p.m. UTC | #2
On Thu, Aug 18, 2022 at 11:16 AM Li Huafei <lihuafei1@huawei.com> wrote:

> Hi Russell,
>
> Do you have any more comments on this patch set? Can you add this patch
> set to your patch tracker? Thanks!

I would rebase the patch on v6.0-rc1 and resend then you can add it
to Russell's patch tracker yourself, it's not very hard to use, there is
good documentation for how to use it:
https://www.arm.linux.org.uk/developer/patches/

Yours,
Linus Walleij
Li Huafei Aug. 26, 2022, 8:29 a.m. UTC | #3
On 2022/8/25 21:00, Linus Walleij wrote:
> On Thu, Aug 18, 2022 at 11:16 AM Li Huafei <lihuafei1@huawei.com> wrote:
> 
>> Hi Russell,
>>
>> Do you have any more comments on this patch set? Can you add this patch
>> set to your patch tracker? Thanks!
> 
> I would rebase the patch on v6.0-rc1 and resend then you can add it
> to Russell's patch tracker yourself, it's not very hard to use, there is
> good documentation for how to use it:
> https://www.arm.linux.org.uk/developer/patches/
> 

It's done. Thank you for the tip.

Thanks,
Huafei

> Yours,
> Linus Walleij
> .
>